wikipedia.org

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Free website and domain report on wikipedia.org

Last Updated: 18th October, 2023 Update Now
Overview

Snoop Summary for wikipedia.org

This is a free and comprehensive report about wikipedia.org. The domain wikipedia.org is currently hosted on a server located in United States with the IP address 208.80.154.224, where USD is the local currency and the local language is English. Our records indicate that wikipedia.org is privately registered by Wikimedia Foundation, Inc.. Wikipedia.org is expected to earn an estimated $1,523,092 USD per day from advertising revenue. The sale of wikipedia.org would possibly be worth $1,111,857,200 USD. This figure is based on the daily revenue potential of the website over a 24 month period. Wikipedia.org is unbelievably popular with an estimated 110,243,778 daily unique visitors. This report was last updated 18th October, 2023.

About wikipedia.org

Site Preview: wikipedia.org wikipedia.org
Title: Wikipedia
Description: Wikipedia is a free online encyclopedia, created and edited by volunteers around the world and hosted by the Wikimedia Foundation.
Keywords and Tags: airport, alt. or controversial medicine, avengers endgame, blogs, education, facebook, grocery store, hurricane dorian, juice wrld, kobe bryant, meghan markle, opinions, politics, popular, pornhub, reference, religion, restaurants, super bowl, thanos, wiki, wikipedia, wizard of oz, youtube
Related Terms: andrea galeazzi wikipedia, bokeh movie plot wikipedia, dimitri speck wikipedia, wikipedia com, wikipedia de, wikipedia de deutschland, wikipedia wikipedia, www wikipedia, www wikipedia com, www wikipedia de
Fav Icon:
Age: Over 23 years old
Domain Created: 13th January, 2001
Domain Updated: 17th December, 2022
Domain Expires: 13th January, 2024
Review

Snoop Score

5/5 (Perfect!)

Valuation

$1,111,857,200 USD
Note: All valuation figures are estimates.

Popularity

Worldwide Sensation
Note: Popularity is estimated.

Rank, Reach and Authority

Alexa Rank: 11
Alexa Reach:
SEMrush Rank (US): 1
SEMrush Authority Score: 97
Moz Domain Authority: 93
Moz Page Authority: 77

Organic vs Paid (Google Ads)

Organic Paid
Keywords: 105,043,557 1
Traffic: 3,041,967,054 1
Cost: $4,065,319,813 USD $0 USD
Traffic

Visitors

Daily Visitors: 110,243,778
Monthly Visitors: 3,355,473,323
Yearly Visitors: 40,238,978,970
Note: All visitors figures are estimates.

Visitors By Country

Revenue

Revenue

Daily Revenue: $1,523,092 USD
Monthly Revenue: $46,358,124 USD
Yearly Revenue: $555,928,595 USD
Note: All revenue figures are estimates.

Revenue By Country

SEO

Backlinks Analysis (SEMrush)

Backlinks: 10,109,482,990
Referring Domains: 5,898,904
Referring IPs: 1,535,319
Wikipedia.org has 10,109,482,990 backlinks according to SEMrush. 90% of these backlinks are "dofollow" (follow) links which allow the flow of link equity to pass through, which may improve wikipedia.org's search engine rankings. Other links are treated as 'hints' by search engines and may also pass link equity, depending on what search engines decide in each case.
100% of wikipedia.org's backlinks are text and image links, which are ideal for SEO. Other backlink types may be unrecognized or ignored by search engines.

Top New Follow Links

1
Source: https://commons.wikimedia.org/wiki/Main_Page
Target: https://en.wikipedia.org/wiki/Ch%C3%A2teau_de_Chantilly

2
Source: https://commons.wikimedia.org/wiki/Main_Page
Target: https://en.wikipedia.org/wiki/All_Saints'_Day

3
Source: https://commons.wikimedia.org/wiki/Main_Page
Target: https://en.wikipedia.org/wiki/Lake_Bled

4
Source: https://commons.wikimedia.org/wiki/Main_Page
Target: https://en.wikipedia.org/wiki/Charles_Dickens

5
Source: https://commons.wikimedia.org/wiki/Main_Page
Target: https://en.wikipedia.org/wiki/Wroc%C5%82aw_Cathedral

Top Ranking Keywords (US)

1
Keyword: kobe bryant
Ranked Page: https://en.wikipedia.org/wiki/Kobe_Bryant

2
Keyword: pornhub
Ranked Page: https://en.wikipedia.org/wiki/Pornhub

3
Keyword: restaurants
Ranked Page: https://en.wikipedia.org/wiki/Restaurant

4
Keyword: airport
Ranked Page: https://en.wikipedia.org/wiki/Airport

5
Keyword: juice wrld
Ranked Page: https://en.wikipedia.org/wiki/Juice_Wrld

Domain Analysis

Value Length
Domain: wikipedia.org 13
Domain Name: wikipedia 9
Extension (TLD): org 3
Expiry Check:

Page Speed Analysis

Average Load Time: 0.94 seconds
Load Time Comparison: Faster than 76% of sites

PageSpeed Insights

Avg. (All Categories) 80
Performance 92
Accessibility 92
Best Practices 92
SEO 91
PWA 33
0–49 (Fail) 50–89 (Average) 90–100 (Pass)
URL: https://www.wikipedia.org/
Updated: 22nd December, 2022

1.25 seconds
First Contentful Paint (FCP)
87%
8%
5%

0.00 seconds
First Input Delay (FID)
97%
2%
1%

Simulate loading on desktop
92

Performance

Indicates how well the page is performing and highlights opportunities where performance may be improved for wikipedia.org. This includes details about optimizing page load times which can result in a better user experience.

Metrics

First Contentful Paint — 0.7 s
The time taken for the first image or text on the page to be rendered.
Time to Interactive — 1.0 s
The time taken for the page to become fully interactive.
Largest Contentful Paint — 0.9 s
The timing of the largest text or image that is painted.
Cumulative Layout Shift — 0
Cumulative Layout Shift is the measurement of visible elements collective movement within the viewport.
View Data

Audits

First Meaningful Paint — 0.8 s
The time taken for the primary content of the page to be rendered.
Network Requests
Below is a list of network requests that were made during page load.
URL Protocol Start Time (Ms) End Time (Ms) Transfer Size (Bytes) Resource Size (Bytes) Status Code MIME Type Resource Type
http://wikipedia.org/
http/1.1
0
199.57599975169
629
0
301
text/plain
https://wikipedia.org/
http/1.1
200.93300007284
520.31000005081
1594
0
301
text/html
https://www.wikipedia.org/
h2
520.68600011989
978.28599996865
20432
80674
200
text/html
Document
https://www.wikipedia.org/portal/wikipedia.org/assets/img/Wikipedia-logo-v2.png
h2
998.49899997935
1375.8629998192
17152
15829
200
image/png
Image
https://www.wikipedia.org/portal/wikipedia.org/assets/js/index-d3e0c351c9.js
h2
998.81199980155
1396.9539999962
9719
23309
200
application/javascript
Script
https://www.wikipedia.org/portal/wikipedia.org/assets/js/gt-ie9-ce3fe8e88d.js
h2
1023.3569997363
1142.996000126
1909
614
200
application/javascript
Script
https://www.wikipedia.org/portal/wikipedia.org/assets/img/sprite-e99844f6.svg
h2
1025.6329998374
1401.5540000983
18936
49631
200
image/svg+xml
Image
https://www.wikipedia.org/portal/wikipedia.org/assets/img/Wikinews-logo_sister.png
h2
1255.6699998677
1405.8619998395
3389
2066
200
image/png
Image
Network Round Trip Times — 0 ms
High Network RTT (Round Trip Times) can have a large impact on performance. Providing servers geographically closer to the user could improve performance.
Server Backend Latencies — 0 ms
High server latencies indicate the server is overloaded or has a poor backend performance.
Tasks
Below is a list of the top-level main thread tasks that executed during page load.
Start Time (Ms) End Time (Ms)
986.446
19.665
1006.481
18.968
1025.463
184.971
1215.233
10.437
1226.676
497.716
1726.47
25.621
1753.032
7.114
1761.226
35.536
1797.718
20.168
1819.809
25.627
Diagnostics
Below is a collection of useful page vitals.
View Data
Metrics
Below is a collection of metrics.
View Data
Script Treemap Data
Provide as required, for treemap app.

Other

Eliminate render-blocking resources
Resources, such as JavaScript and style sheets, can block the first paint of the page. Wikipedia.org should consider delivering critical JavaScript/style sheets (JS/CSS) inline and deferring all non-critical JS/CSS.
Properly size images
Images can slow down the page's load time. Wikipedia.org should consider serving more appropriate-sized images.
Defer offscreen images
Time to Interactive can be slowed down by resources on the page. Wikipedia.org should consider lazy-loading offscreen and hidden images.
Minify CSS
Cascading Style Sheets (CSS) files can contribute to network payload sizes. Wikipedia.org should consider minifying CSS files.
Minify JavaScript
JavaScript (JS) files can contribute to network payload sizes and increase script parse times. Wikipedia.org should consider minifying JS files.
Reduce unused CSS
Dead and/or unused rules in Style Sheets (CSS) can contribute to network payload sizes. Wikipedia.org should consider removing dead rules from style sheets and deferring the loading of CSS not used for above-the-fold content.
Reduce unused JavaScript
It is advised to remove unused JavaScript in order to reduce bytes consumed by network activity.
Efficiently encode images
Unoptimized images can consume more cellular data than what is necessary.
Serve images in next-gen formats — Potential savings of 9 KiB
Consider JPEG 2000, JPEG XR or WebP image formats which provide better compression than PNG and JPEG.
URL Resource Size (Bytes) Potential Savings (Bytes)
https://www.wikipedia.org/portal/wikipedia.org/assets/img/Wikipedia-logo-v2.png
15829
9093.5
Enable text compression
Text-based resources should be served with compression, such as gzip, deflate or brotli.
Preconnect to required origins
Resource hints, such as 'preconnect' or 'dns-prefetch', may assist in establishing early connections to important third-party origins.
Initial server response time was short — Root document took 460 ms
It is advised to keep the server response time short for the main document, because all other requests depend on it.
URL Time Spent (Ms)
https://www.wikipedia.org/
458.593
Preload key requests
Key requests can be preloaded by using '<link rel=preload>'. Wikipedia.org should consider using '<link rel=preload>' to prioritize fetching resources that are currently requested later in page load.
Use video formats for animated content
Large GIFs are inefficient for delivering animated content. It is recommended to use MPEG4/WebM videos for animations and PNG/WebP for static images instead of GIF.
Remove duplicate modules in JavaScript bundles
Ensure that no duplicate JavaScript modules from bundles exist to reduce bytes consumed by network activity.
Avoid serving legacy JavaScript to modern browsers
Polyfills and transforms enable legacy browsers to use new JavaScript features. For bundled JavaScript it is recommended to adopt a modern script deployment strategy using module/nomodule feature detection. This will reduce the amount of code shipped to modern browsers.
Preload Largest Contentful Paint image
It is recommended to preload images used by LCP elements, to improve LCP time.
URL Potential Savings (Ms)
https://www.wikipedia.org/portal/wikipedia.org/assets/img/Wikipedia-logo-v2.png
0
Avoids enormous network payloads — Total size was 72 KiB
Large network payloads can cost users money and are linked to long load times.
URL Transfer Size (Bytes)
https://www.wikipedia.org/
20432
https://www.wikipedia.org/portal/wikipedia.org/assets/img/sprite-e99844f6.svg
18936
https://www.wikipedia.org/portal/wikipedia.org/assets/img/Wikipedia-logo-v2.png
17152
https://www.wikipedia.org/portal/wikipedia.org/assets/js/index-d3e0c351c9.js
9719
https://www.wikipedia.org/portal/wikipedia.org/assets/img/Wikinews-logo_sister.png
3389
https://www.wikipedia.org/portal/wikipedia.org/assets/js/gt-ie9-ce3fe8e88d.js
1909
https://wikipedia.org/
1594
http://wikipedia.org/
629
Uses efficient cache policy on static assets — 5 resources found
Wikipedia.org can speed up repeat visits by increasing the cache lifetime, which is essentially how long before a cached copy expires.
URL Cache TTL (Ms) Transfer Size (Bytes)
https://www.wikipedia.org/portal/wikipedia.org/assets/img/sprite-e99844f6.svg
86400000
18936
https://www.wikipedia.org/portal/wikipedia.org/assets/img/Wikipedia-logo-v2.png
86400000
17152
https://www.wikipedia.org/portal/wikipedia.org/assets/js/index-d3e0c351c9.js
86400000
9719
https://www.wikipedia.org/portal/wikipedia.org/assets/img/Wikinews-logo_sister.png
86400000
3389
https://www.wikipedia.org/portal/wikipedia.org/assets/js/gt-ie9-ce3fe8e88d.js
86400000
1909
Avoid chaining critical requests — 2 chains found
Below is a list of Critical Request Chains, which shows which resources are loaded with a high priority. Wikipedia.org should consider reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.
User Timing marks and measures
Make use of the User Timing API to measure an app's real-world performance during key user experiences.
JavaScript execution time — 0.1 s
JavaScript (JS) execution time can be lowered by reducing the time required for parsing, compiling and executing JS. Delivering smaller JS payloads may help with this.
URL Total CPU Time (Ms) Script Evaluation (Ms) Script Parse (Ms)
https://www.wikipedia.org/
770.932
5.551
2.192
https://www.wikipedia.org/portal/wikipedia.org/assets/js/index-d3e0c351c9.js
57.366
55.503
0.639
Minimizes main-thread work — 0.9 s
Main-thread work timing can be lowered by reducing the time required for parsing, compiling and executing JS. Delivering smaller JS payloads may help with this.
Category Time Spent (Ms)
Style & Layout
679.468
Other
67.558
Script Evaluation
63.302
Parse HTML & CSS
29.83
Rendering
27.293
Script Parsing & Compilation
2.958
All text remains visible during webfont loads
Make use of the font-display CSS feature, which will ensure text is user-visible while webfonts are loading.
Keep request counts low and transfer sizes small — 8 requests • 72 KiB
It is advised to add a budgets.json file in order to set budgets for the quantity and size of page resources.
Resource Type Requests Transfer Size (Bytes)
Total
8
73760
Image
3
39477
Document
1
20432
Script
2
11628
Other
2
2223
Stylesheet
0
0
Media
0
0
Font
0
0
Third-party
0
0
Minimize third-party usage
It is advised to either limit, remove or delay the loading of redundant third-party code which may be significantly impacting load performance.
Lazy load third-party resources with facades
Consider replacing third-party embeds with a facade until they are required (use lazy loading).
Largest Contentful Paint element — 1 element found
The element which was identified as the Largest Contentful Paint.
Element
Largest Contentful Paint image was not lazily loaded
Above-the-fold images that are lazily loaded render later in the page lifecycle, which can delay the largest contentful paint.
Element
Avoid large layout shifts
Below is a list of all DOM elements that contribute to the CLS of the page.
Uses passive listeners to improve scrolling performance
Improve the page's scroll performance by marking touch and wheel event listeners as 'passive'.
Avoids `document.write()`
Avoid or limit the use of external scripts that are dynamically injected via 'document.write()' as users on slow connections will be delayed by tens of seconds.
Avoid long main-thread tasks — 2 long tasks found
Below is a list of the longest tasks on the main thread, which is useful when identifying the worst input delay contributors.
URL Start Time (Ms) Duration (Ms)
https://www.wikipedia.org/
751
249
https://www.wikipedia.org/
649
92
Avoid non-composited animations — 1 animated element found
It is recommended to avoid non-composited animations which are often janky and increase CLS.
Element Name
Image elements have explicit `width` and `height`
Reduce layout shifts and improve CLS by setting explicit width and height properties on image elements.
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of wikipedia.org on mobile screens.
Avoids `unload` event listeners
The 'unload' event does not fire reliably, causing issues with browser optimizations such as the Back-Forward Cache. It is recommended that 'pagehide' or 'visibilitychange' events are used instead.

Budgets

Performance budget
It is advised to keep the quantity and size of all network requests under the targets set by the provided performance budget.
Timing budget
It is advised to set a timing budget to monitor the performance of your site.

Metrics

Speed Index — 1.5 s
The time taken for the page contents to be visibly populated.
Total Blocking Time — 180 ms
The total blocking time is the sum of all time periods between First Contentful Paint and Time to Interactive (when task length exceeded 50ms).

Audits

Max Potential First Input Delay — 250 ms
Users could experience a delay when interacting with the page.

Other

Avoid multiple page redirects — Potential savings of 340 ms
Redirects can cause additional delays before the page can begin loading. Wikipedia.org should avoid multiple or unnecessary page redirects.
URL Time Spent (Ms)
http://wikipedia.org/
190
https://wikipedia.org/
150
https://www.wikipedia.org/
0
Avoid an excessive DOM size — 992 elements
A large DOM (Document Object Model) will increase memory usage, cause longer system calculations as well as costly layout reflows.
Statistic Element Value
Total DOM Elements
992
Maximum DOM Depth
9
Maximum Child Elements
109
92

Accessibility

Indicates how accessible the page is and highlights opportunities where the page can be made more accessible to users of wikipedia.org. This includes details about various page attributes that can be optimized.

Navigation

`[accesskey]` values are unique
Access keys assist users with focusing on different parts of the page. Each access key should be unique for proper navigation.
The page contains a heading, skip link, or landmark region
It is advised to provide ways to bypass repetitive content, allowing users to navigate the page efficiently.
`[id]` attributes on active, focusable elements are unique
Ensure all focusable elements have a unique id value to allow them to be visible to users of assistive technologies, like a screen reader.
Heading elements appear in a sequentially-descending order
Properly order all headers and do not skip heading levels to better the navigation and readability for users of assistive technologies, like a screen reader.
No element has a `[tabindex]` value greater than 0
Although technically valid, a tabindex value greater than 0 often creates frustrating experiences for users who rely on assistive technologies.

ARIA

`[aria-*]` attributes match their roles
Avoid mismatching 'aria-*' attributes and their 'role' value, as it invalidates the attribute.
`button`, `link`, and `menuitem` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
`[aria-hidden="true"]` is not present on the document `<body>`
If aria-hidden=true is set on the document body, assistive technologies, like a screen reader will work inconsistently.
`[aria-hidden="true"]` elements do not contain focusable descendents
Interactive elements within an aria-hidden=true element are unavailable to users of assistive technologies, like a screen reader.
ARIA input fields have accessible names
Generic names are announced to users of assistive technologies, like a screen reader, when an input field does not have an accessible name specified.
ARIA `meter` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
ARIA `progressbar` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
`[role]`s have all required `[aria-*]` attributes
Some ARIA roles have required 'aria-*' attributes, which provide essential information about state and functionality.
Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
Some ARIA parent roles cannot perform their intended functions if specific child roles are not used.
`[role]`s are contained by their required parent element
Some ARIA child roles cannot perform their intended functions if specific parent roles are not used.
`[role]` values are valid
All ARIA roles require valid values to perform their intended functions.
ARIA toggle fields have accessible names
Generic names are announced to users of assistive technologies, like a screen reader, when a toggle field does not have an accessible name specified.
ARIA `tooltip` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
ARIA `treeitem` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
`[aria-*]` attributes have valid values
ARIA attributes cannot be interpreted with invalid values when used by screen readers and other assistive technologies.
`[aria-*]` attributes are valid and not misspelled
ARIA attributes cannot be interpreted with invalid names when used by screen readers and other assistive technologies.

Names and labels

Buttons have an accessible name
Buttons become unusable as they are announced simply as "button" when the button does not have an accessible name, when used by screen readers and other assistive technologies.
Document has a `<title>` element
Search engines, screen reader users and other assistive technology users rely on the title to provide an overview of the page and to help determine if the page is relevant to their search.
No form fields have multiple labels
Having multiple labels for form fields can be confusing to assistive technologies, like a screen reader.
`<frame>` or `<iframe>` elements have a title
Screen reader users and other assistive technology users rely on frame titles to describe the contents of frames.
Image elements have `[alt]` attributes
Provide short and descriptive alternative text where possible on informative elements.
`<input type="image">` elements have `[alt]` text
Input buttons with alternative text assist screen readers and other assistive technology users to understand its purpose.
Form elements have associated labels
Screen readers and other assistive technologies rely on labels to properly announce form controls.
Links have a discernible name
In order to improve the navigation for screen reader and other assistive technology users, use link text that is unique, focusable and discernible.
`<object>` elements have alternate text
It is advised that alt text is used on '<object>' elements in order to provide meaning to screen reader and other assistive technology users, as these technologies are unable to translate non-text content.

Contrast

Background and foreground colors have a sufficient contrast ratio
Many (if not most) users find low-contrast text difficult or impossible to read.

Tables and lists

`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
Screen readers and other assistive technologies may produce poor and inaccurate output when definition lists are not properly marked up.
Definition list items are wrapped in `<dl>` elements
In order for screen readers and other assistive technologies to properly announce definition list items ('<dt>' and '<dd>'), they must be wrapped in parent a '<dl>' element.
Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
Use proper list structure to aid screen readers and other assistive technologies.
List items (`<li>`) are contained within `<ul>` or `<ol>` parent elements
In order for screen readers to announce list items, ensure that list items ('<li>') are contained within parent '<ul>' or '<ol>' tags.
Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.
Screen readers and other assistive technologies have features to make navigating tables easier. Ensure that '<td>' cells using the headers attribute only refer to other cells in the same table, to improve screen reader user experience.
`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.
Screen readers and other assistive technologies have features to make navigating tables easier. Ensure that table headers refer to some set of cells, to improve screen reader user experience.

Internationalization and localization

`<html>` element has a `[lang]` attribute
It is advised to provide a lang attribute so that screen readers and other assistive technologies are guaranteed to announce the page's text correctly. When not provided, the user's default language setting will be used which may cause inaccuracies.
`<html>` element has a valid value for its `[lang]` attribute
Specify a valid BCP 47 language in order to help screen readers and other assistive technologies announce text properly.
`[lang]` attributes have a valid value
Specify a valid BCP 47 language on elements in order to help screen readers and other assistive technologies announce text properly.

Best practices

The document does not use `<meta http-equiv="refresh">`
Pages that refresh automatically cause a poor user experience as focus is directed back to the top of the page unexpectedly.
`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
For users with low vision who rely on screen magnification, ensure that zooming is not disabled.

Audio and video

`<video>` elements contain a `<track>` element with `[kind="captions"]`
Wikipedia.org may provide assistance to deaf or hearing-impaired users with captions on videos.

ARIA

ARIA IDs are not unique
Ensure all ARIA ID values are unique to prevent elements from being overlooked by assistive technologies, like a screen reader.
Failing Elements

Manual Checks

The page has a logical tab order
The visual layout should be logical in its tab order and users cannot focus elements that are offscreen.
Interactive controls are keyboard focusable
Ensure that custom interactive controls are keyboard focusable and that a focus indicator is displayed.
Interactive elements indicate their purpose and state
Ensure that interactive elements (such as links and buttons) are distinguishable from non-interactive elements and that they indicate their state.
The user's focus is directed to new content added to the page
When new content (such as a dialogue) is added to the page, the user's focus should be directed to it.
User focus is not accidentally trapped in a region
Avoid focus being accidentally trapped when a user tabs in and out of controls or regions on page.
Custom controls have associated labels
Ensure that custom interactive controls have associated labels, which are provided by aria-label and aria-labelledby attributes.
Custom controls have ARIA roles
Ensure that all custom interactive controls have appropriate ARIA roles.
Visual order on the page follows DOM order
Ensure that the DOM order matches with the page's visual order, in order to improve navigation for screen readers and other assistive technologies.
Offscreen content is hidden from assistive technology
Ensure that offscreen content is hidden through the use of "display:none" styling or the aria-hidden attribute.
HTML5 landmark elements are used to improve navigation
Elements such as <main> and <nav> are recommended as they are used by screen readers and other assistive technologies to improve keyboard navigation.
92

Best Practices

Indicates the recommended, best practices currently in place on the page and highlights the best practices that wikipedia.org should incorporate. This includes practices such as protecting pages with HTTPS.

Audits

Avoids requesting the geolocation permission on page load
When requesting a user's location, provide context or consider tying the request to a user action to avoid confusion and mistrust from users.
Avoids requesting the notification permission on page load
When requesting permission to send notifications, provide context or consider tying the request to a user action to avoid confusion and mistrust from users.
Avoids front-end JavaScript libraries with known security vulnerabilities
Ensure that the use of third-party scripts is minimal and that only trusted third-party scripts are used as some may contain known security vulnerabilities which may be exploited by attackers.
Ensure CSP is effective against XSS attacks
Significantly reduce the risk of cross-site scripting attacks (XSS) by ensuring you have a strong Content Security Policy (CSP).
Description Directive Severity
No CSP found in enforcement mode
High

Audits

Allows users to paste into password fields
Ensure that password inputs may be pasted into to aid in the user's ability to use password managers and improve security.
Displays images with correct aspect ratio
Ensure that image display dimensions match their natural aspect ratio.
Serves images with appropriate resolution
For maximum image clarity, ensure images have natural dimensions and are proportional to the display size and pixel ratio.
Fonts with `font-display: optional` are preloaded
It is recommended that optional fonts are preloaded.

Audits

Page has the HTML doctype
Ensure a doctype is specified to prevent the browser from switching to quirks-mode.
Properly defines charset
It is advised to declare a character encoding, optionally via a <meta> tag in the first 1024 bytes of the HTML or in the Content-Type HTTP response header.

Audits

Detected JavaScript libraries
Below is a list of all front-end JavaScript libraries that were detected on the page.
Avoids deprecated APIs
Avoid deprecated APIs which will eventually be removed the browser.
No browser errors logged to the console
Below is a list of all errors logged to the console, which indicate unresolved problems on the site.
Page has valid source maps
Consider deploying source maps for added benefits such as the ability to debug while in production.
No issues in the `Issues` panel in Chrome Devtools
There may be unresolved issues logged to Chrome Devtools.

Audits

Does not use HTTPS — 1 insecure request found
Ensure that all pages are protected with HTTPS (including those that do not handle sensitive data) as HTTPS prevents tampering and passive listening on communications between the app and its users. Additionally, HTTPS is a prerequisite for HTTP/2 and many new web platform APIs.
Insecure URL Request Resolution
http://wikipedia.org/
Allowed
91

SEO

Indicates how well the page is optimized for ranking in search engines and highlights Search Engine Optimization (SEO) opportunities for wikipedia.org. This includes optimizations such as providing meta data.

Mobile Friendly

Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of wikipedia.org on mobile screens.
Document uses legible font sizes
Font sizes of 12px or less are too small to most mobile users without user gestures and further action. Aim for more than 60% of page text to use font sizes greater than 12px.
Tap targets are sized appropriately
Interactive elements (such as buttons and links) should be appropriately spaced, sized and easy enough to select or tap with regard to their surrounding elements.

Content Best Practices

Document has a `<title>` element
Search engines, screen reader users and other assistive technology users rely on the title to provide an overview of the page and to help determine if the page is relevant to their search.
Document has a meta description
Meta descriptions may be used by search engines when displaying a link to the page and should concisely summarize the page's content.
Links have descriptive text
Make use of descriptive link text to assist search engines in understanding the content.
Image elements have `[alt]` attributes
Provide short and descriptive alternative text where possible on informative elements.
Document has a valid `hreflang`
Search engines can be instructed to list specific versions of a page for a given language or region through the use of hreflang links.
Document has a valid `rel=canonical`
Search engines can be suggested which URL should be shown in search results through the use of canonical links.
Document avoids plugins
The content of plugins cannot be indexed by search engines and many devices either restrict or do not support them.

Crawling and Indexing

Page has successful HTTP status code
Avoid pages with unsuccessful HTTP status codes as they may not be indexed by search engines.
Links are crawlable
Ensure that the 'href' attribute of anchor elements links to the appropriate destination. This allows for more pages of the site to be discovered by search engines.
Page isn’t blocked from indexing
Pages that cannot be crawled by search engines cannot be indexed or included in their search results. Ensure that search engines have permission to crawl all pages that should be indexed.

Crawling and Indexing

robots.txt is not valid
Malformed robots.txt files prevent crawlers from understanding how a site wants to be crawled or indexed, which can be devastating to SEO.

Manual Checks

Structured data is valid
Structured data can be validated through the use of the Structured Data Testing Tool and the Structured Data Linter.
33

PWA

Indicates how valid the aspects of a Progressive Web App (PWA) are for the page and highlights opportunities to enable/improve the PWA of wikipedia.org. This includes details about web app manifests.

PWA Optimized

Content is sized correctly for the viewport
Ensure that the width of the app's content matches the width of the viewport, otherwise the app might not be optimized for mobile screens.
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of wikipedia.org on mobile screens.
Provides a valid `apple-touch-icon`
iOS users of Progressive Web Apps will benefit from an apple touch icon, which can be defined with 'apple-touch-icon', which must point to a non-transparent 192px (or 180px) square PNG.

Installable

Web app manifest or service worker do not meet the installability requirements — 1 reason
User engagement may be increased by leveraging the browsers ability to proactively prompt users to add the app to their homescreen.
Failure reason
No manifest was fetched

PWA Optimized

Does not register a service worker that controls page and `start_url`
A service worker is used to provide Progressive Web Apps the use of features such as working offline, the ability for the app to be added to the homescreen as well as push notifications.
Is not configured for a custom splash screen
Themed splash screens ensure a high-quality user experience at launch for app users.
View Data
Does not set a theme color for the address bar.
A theme may be applied to the browser address bar, which ideally can be made to match the site.
View Data
Manifest doesn't have a maskable icon
Maskable icons are great to ensure that images fill the entire shape when installing the app on a device.

Manual Checks

Site works cross-browser
Ensure that the Progressive Web App works correctly across every major browser.
Page transitions don't feel like they block on the network
Users perceive apps with responsive, snappy transitions as higher peforming and ensures a great user experience, even on a slow network.
Each page has a URL
Ensure that all pages are deep linkable via URL. They should also be unique for the purpose of shareability on social media.
Avg. (All Categories) 77
Performance 86
Accessibility 84
Best Practices 92
SEO 91
PWA 30
0–49 (Fail) 50–89 (Average) 90–100 (Pass)
URL: https://www.wikipedia.org/
Updated: 22nd December, 2022

1.20 seconds
First Contentful Paint (FCP)
87%
8%
5%

0.01 seconds
First Input Delay (FID)
96%
3%
1%

Simulate loading on mobile
86

Performance

Indicates how well the page is performing and highlights opportunities where performance may be improved for wikipedia.org. This includes details about optimizing page load times which can result in a better user experience.

Metrics

Time to Interactive — 2.6 s
The time taken for the page to become fully interactive.
Speed Index — 2.1 s
The time taken for the page contents to be visibly populated.
Cumulative Layout Shift — 0.036
Cumulative Layout Shift is the measurement of visible elements collective movement within the viewport.
View Data

Other

Eliminate render-blocking resources
Resources, such as JavaScript and style sheets, can block the first paint of the page. Wikipedia.org should consider delivering critical JavaScript/style sheets (JS/CSS) inline and deferring all non-critical JS/CSS.
Defer offscreen images
Time to Interactive can be slowed down by resources on the page. Wikipedia.org should consider lazy-loading offscreen and hidden images.
Minify CSS
Cascading Style Sheets (CSS) files can contribute to network payload sizes. Wikipedia.org should consider minifying CSS files.
Minify JavaScript
JavaScript (JS) files can contribute to network payload sizes and increase script parse times. Wikipedia.org should consider minifying JS files.
Reduce unused CSS
Dead and/or unused rules in Style Sheets (CSS) can contribute to network payload sizes. Wikipedia.org should consider removing dead rules from style sheets and deferring the loading of CSS not used for above-the-fold content.
Reduce unused JavaScript
It is advised to remove unused JavaScript in order to reduce bytes consumed by network activity.
Efficiently encode images
Unoptimized images can consume more cellular data than what is necessary.
Enable text compression
Text-based resources should be served with compression, such as gzip, deflate or brotli.
Preconnect to required origins
Resource hints, such as 'preconnect' or 'dns-prefetch', may assist in establishing early connections to important third-party origins.
Initial server response time was short — Root document took 90 ms
It is advised to keep the server response time short for the main document, because all other requests depend on it.
URL Time Spent (Ms)
https://www.wikipedia.org/
87.888
Preload key requests
Key requests can be preloaded by using '<link rel=preload>'. Wikipedia.org should consider using '<link rel=preload>' to prioritize fetching resources that are currently requested later in page load.
Use video formats for animated content
Large GIFs are inefficient for delivering animated content. It is recommended to use MPEG4/WebM videos for animations and PNG/WebP for static images instead of GIF.
Remove duplicate modules in JavaScript bundles
Ensure that no duplicate JavaScript modules from bundles exist to reduce bytes consumed by network activity.
Avoid serving legacy JavaScript to modern browsers
Polyfills and transforms enable legacy browsers to use new JavaScript features. For bundled JavaScript it is recommended to adopt a modern script deployment strategy using module/nomodule feature detection. This will reduce the amount of code shipped to modern browsers.
Preload Largest Contentful Paint image
It is recommended to preload images used by LCP elements, to improve LCP time.
Avoids enormous network payloads — Total size was 94 KiB
Large network payloads can cost users money and are linked to long load times.
URL Transfer Size (Bytes)
https://www.wikipedia.org/portal/wikipedia.org/assets/img/Wikipedia-logo-v2@2x.png
38803
https://www.wikipedia.org/
20431
https://www.wikipedia.org/portal/wikipedia.org/assets/img/sprite-e99844f6.svg
18935
https://www.wikipedia.org/portal/wikipedia.org/assets/js/index-d3e0c351c9.js
9719
https://www.wikipedia.org/portal/wikipedia.org/assets/img/Wikinews-logo_sister@2x.png
4734
https://www.wikipedia.org/portal/wikipedia.org/assets/js/gt-ie9-ce3fe8e88d.js
1909
https://wikipedia.org/
1592
http://wikipedia.org/
642
Avoid chaining critical requests — 2 chains found
Below is a list of Critical Request Chains, which shows which resources are loaded with a high priority. Wikipedia.org should consider reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.
User Timing marks and measures
Make use of the User Timing API to measure an app's real-world performance during key user experiences.
JavaScript execution time — 0.0 s
JavaScript (JS) execution time can be lowered by reducing the time required for parsing, compiling and executing JS. Delivering smaller JS payloads may help with this.
URL Total CPU Time (Ms) Script Evaluation (Ms) Script Parse (Ms)
https://www.wikipedia.org/
1229.924
12.72
5.336
Unattributable
71.632
4.764
0
Minimizes main-thread work — 1.3 s
Main-thread work timing can be lowered by reducing the time required for parsing, compiling and executing JS. Delivering smaller JS payloads may help with this.
Category Time Spent (Ms)
Style & Layout
1069.06
Other
121.368
Rendering
60.588
Script Evaluation
49.192
Parse HTML & CSS
30.74
Script Parsing & Compilation
7.612
All text remains visible during webfont loads
Make use of the font-display CSS feature, which will ensure text is user-visible while webfonts are loading.
Keep request counts low and transfer sizes small — 8 requests • 94 KiB
It is advised to add a budgets.json file in order to set budgets for the quantity and size of page resources.
Resource Type Requests Transfer Size (Bytes)
Total
8
96765
Image
3
62472
Document
1
20431
Script
2
11628
Other
2
2234
Stylesheet
0
0
Media
0
0
Font
0
0
Third-party
0
0
Minimize third-party usage
It is advised to either limit, remove or delay the loading of redundant third-party code which may be significantly impacting load performance.
Lazy load third-party resources with facades
Consider replacing third-party embeds with a facade until they are required (use lazy loading).
Largest Contentful Paint element — 1 element found
The element which was identified as the Largest Contentful Paint.
Element
Largest Contentful Paint image was not lazily loaded
Above-the-fold images that are lazily loaded render later in the page lifecycle, which can delay the largest contentful paint.
Avoid large layout shifts — 2 elements found
Below is a list of all DOM elements that contribute to the CLS of the page.
Element CLS Contribution
0.035364990234375
0.00037713623046875
Uses passive listeners to improve scrolling performance
Improve the page's scroll performance by marking touch and wheel event listeners as 'passive'.
Avoids `document.write()`
Avoid or limit the use of external scripts that are dynamically injected via 'document.write()' as users on slow connections will be delayed by tens of seconds.
Avoid long main-thread tasks — 2 long tasks found
Below is a list of the longest tasks on the main thread, which is useful when identifying the worst input delay contributors.
URL Start Time (Ms) Duration (Ms)
https://www.wikipedia.org/
2206
427
https://www.wikipedia.org/
2097
64
Avoid non-composited animations — 1 animated element found
It is recommended to avoid non-composited animations which are often janky and increase CLS.
Element Name
Image elements have explicit `width` and `height`
Reduce layout shifts and improve CLS by setting explicit width and height properties on image elements.
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of wikipedia.org on mobile screens.
Avoids `unload` event listeners
The 'unload' event does not fire reliably, causing issues with browser optimizations such as the Back-Forward Cache. It is recommended that 'pagehide' or 'visibilitychange' events are used instead.

Budgets

Performance budget
It is advised to keep the quantity and size of all network requests under the targets set by the provided performance budget.
Timing budget
It is advised to set a timing budget to monitor the performance of your site.

Audits

Network Requests
Below is a list of network requests that were made during page load.
URL Protocol Start Time (Ms) End Time (Ms) Transfer Size (Bytes) Resource Size (Bytes) Status Code MIME Type Resource Type
http://wikipedia.org/
http/1.1
0
19.669000059366
642
0
301
text/plain
https://wikipedia.org/
http/1.1
19.948000088334
94.14800000377
1592
0
301
text/html
https://www.wikipedia.org/
h2
94.559000106528
181.45000003278
20431
80674
200
text/html
Document
https://www.wikipedia.org/portal/wikipedia.org/assets/img/Wikipedia-logo-v2@2x.png
h2
191.36200007051
225.74999998324
38803
37479
200
image/png
Image
https://www.wikipedia.org/portal/wikipedia.org/assets/js/index-d3e0c351c9.js
h2
191.62599998526
285.22199997678
9719
23309
200
application/javascript
Script
https://www.wikipedia.org/portal/wikipedia.org/assets/js/gt-ie9-ce3fe8e88d.js
h2
197.90800008923
224.67399993911
1909
614
200
application/javascript
Script
https://www.wikipedia.org/portal/wikipedia.org/assets/img/sprite-e99844f6.svg
h2
199.44499991834
278.80900003947
18935
49631
200
image/svg+xml
Image
https://www.wikipedia.org/portal/wikipedia.org/assets/img/Wikinews-logo_sister@2x.png
h2
268.69900012389
289.36600009911
4734
3412
200
image/png
Image
Network Round Trip Times — 0 ms
High Network RTT (Round Trip Times) can have a large impact on performance. Providing servers geographically closer to the user could improve performance.
Server Backend Latencies — 0 ms
High server latencies indicate the server is overloaded or has a poor backend performance.
Tasks
Below is a list of the top-level main thread tasks that executed during page load.
Start Time (Ms) End Time (Ms)
184.955
10.16
199.381
32.103
234.436
11.418
246.848
10.831
261.53
213.672
475.245
6.907
488.352
6.941
495.503
11.544
Diagnostics
Below is a collection of useful page vitals.
View Data
Metrics
Below is a collection of metrics.
View Data
Script Treemap Data
Provide as required, for treemap app.

Metrics

First Contentful Paint — 2.1 s
The time taken for the first image or text on the page to be rendered.
Total Blocking Time — 350 ms
The total blocking time is the sum of all time periods between First Contentful Paint and Time to Interactive (when task length exceeded 50ms).
Largest Contentful Paint — 2.7 s
The timing of the largest text or image that is painted.

Audits

First Meaningful Paint — 2.4 s
The time taken for the primary content of the page to be rendered.

Other

Properly size images — Potential savings of 31 KiB
Images can slow down the page's load time. Wikipedia.org should consider serving more appropriate-sized images.
URL Resource Size (Bytes) Potential Savings (Bytes)
https://www.wikipedia.org/portal/wikipedia.org/assets/img/Wikipedia-logo-v2@2x.png
37479
32250
Serve images in next-gen formats — Potential savings of 20 KiB
Consider JPEG 2000, JPEG XR or WebP image formats which provide better compression than PNG and JPEG.
URL Resource Size (Bytes) Potential Savings (Bytes)
https://www.wikipedia.org/portal/wikipedia.org/assets/img/Wikipedia-logo-v2@2x.png
37479
20420.8
Serve static assets with an efficient cache policy — 5 resources found
Wikipedia.org can speed up repeat visits by increasing the cache lifetime, which is essentially how long before a cached copy expires.
URL Cache TTL (Ms) Transfer Size (Bytes)
https://www.wikipedia.org/portal/wikipedia.org/assets/img/Wikipedia-logo-v2@2x.png
86400000
38803
https://www.wikipedia.org/portal/wikipedia.org/assets/img/sprite-e99844f6.svg
86400000
18935
https://www.wikipedia.org/portal/wikipedia.org/assets/js/index-d3e0c351c9.js
86400000
9719
https://www.wikipedia.org/portal/wikipedia.org/assets/img/Wikinews-logo_sister@2x.png
86400000
4734
https://www.wikipedia.org/portal/wikipedia.org/assets/js/gt-ie9-ce3fe8e88d.js
86400000
1909
Avoid an excessive DOM size — 992 elements
A large DOM (Document Object Model) will increase memory usage, cause longer system calculations as well as costly layout reflows.
Statistic Element Value
Total DOM Elements
992
Maximum DOM Depth
9
Maximum Child Elements
109
First Contentful Paint (3G) — 4070 ms
The time taken for the first image or text on the page to be rendered while on a 3G network.

Audits

Max Potential First Input Delay — 430 ms
Users could experience a delay when interacting with the page.

Other

Avoid multiple page redirects — Potential savings of 1,110 ms
Redirects can cause additional delays before the page can begin loading. Wikipedia.org should avoid multiple or unnecessary page redirects.
URL Time Spent (Ms)
http://wikipedia.org/
630
https://wikipedia.org/
480
https://www.wikipedia.org/
0
84

Accessibility

Indicates how accessible the page is and highlights opportunities where the page can be made more accessible to users of wikipedia.org. This includes details about various page attributes that can be optimized.

Navigation

`[accesskey]` values are unique
Access keys assist users with focusing on different parts of the page. Each access key should be unique for proper navigation.
The page contains a heading, skip link, or landmark region
It is advised to provide ways to bypass repetitive content, allowing users to navigate the page efficiently.
`[id]` attributes on active, focusable elements are unique
Ensure all focusable elements have a unique id value to allow them to be visible to users of assistive technologies, like a screen reader.
Heading elements appear in a sequentially-descending order
Properly order all headers and do not skip heading levels to better the navigation and readability for users of assistive technologies, like a screen reader.
No element has a `[tabindex]` value greater than 0
Although technically valid, a tabindex value greater than 0 often creates frustrating experiences for users who rely on assistive technologies.

ARIA

`[aria-*]` attributes match their roles
Avoid mismatching 'aria-*' attributes and their 'role' value, as it invalidates the attribute.
`button`, `link`, and `menuitem` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
`[aria-hidden="true"]` is not present on the document `<body>`
If aria-hidden=true is set on the document body, assistive technologies, like a screen reader will work inconsistently.
`[aria-hidden="true"]` elements do not contain focusable descendents
Interactive elements within an aria-hidden=true element are unavailable to users of assistive technologies, like a screen reader.
ARIA input fields have accessible names
Generic names are announced to users of assistive technologies, like a screen reader, when an input field does not have an accessible name specified.
ARIA `meter` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
ARIA `progressbar` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
`[role]`s have all required `[aria-*]` attributes
Some ARIA roles have required 'aria-*' attributes, which provide essential information about state and functionality.
Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
Some ARIA parent roles cannot perform their intended functions if specific child roles are not used.
`[role]`s are contained by their required parent element
Some ARIA child roles cannot perform their intended functions if specific parent roles are not used.
`[role]` values are valid
All ARIA roles require valid values to perform their intended functions.
ARIA toggle fields have accessible names
Generic names are announced to users of assistive technologies, like a screen reader, when a toggle field does not have an accessible name specified.
ARIA `tooltip` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
ARIA `treeitem` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
`[aria-*]` attributes have valid values
ARIA attributes cannot be interpreted with invalid values when used by screen readers and other assistive technologies.
`[aria-*]` attributes are valid and not misspelled
ARIA attributes cannot be interpreted with invalid names when used by screen readers and other assistive technologies.

Names and labels

Buttons have an accessible name
Buttons become unusable as they are announced simply as "button" when the button does not have an accessible name, when used by screen readers and other assistive technologies.
Document has a `<title>` element
Search engines, screen reader users and other assistive technology users rely on the title to provide an overview of the page and to help determine if the page is relevant to their search.
No form fields have multiple labels
Having multiple labels for form fields can be confusing to assistive technologies, like a screen reader.
`<frame>` or `<iframe>` elements have a title
Screen reader users and other assistive technology users rely on frame titles to describe the contents of frames.
Image elements have `[alt]` attributes
Provide short and descriptive alternative text where possible on informative elements.
`<input type="image">` elements have `[alt]` text
Input buttons with alternative text assist screen readers and other assistive technology users to understand its purpose.
Links have a discernible name
In order to improve the navigation for screen reader and other assistive technology users, use link text that is unique, focusable and discernible.
`<object>` elements have alternate text
It is advised that alt text is used on '<object>' elements in order to provide meaning to screen reader and other assistive technology users, as these technologies are unable to translate non-text content.

Contrast

Background and foreground colors have a sufficient contrast ratio
Many (if not most) users find low-contrast text difficult or impossible to read.

Tables and lists

`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
Screen readers and other assistive technologies may produce poor and inaccurate output when definition lists are not properly marked up.
Definition list items are wrapped in `<dl>` elements
In order for screen readers and other assistive technologies to properly announce definition list items ('<dt>' and '<dd>'), they must be wrapped in parent a '<dl>' element.
Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
Use proper list structure to aid screen readers and other assistive technologies.
List items (`<li>`) are contained within `<ul>` or `<ol>` parent elements
In order for screen readers to announce list items, ensure that list items ('<li>') are contained within parent '<ul>' or '<ol>' tags.
Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.
Screen readers and other assistive technologies have features to make navigating tables easier. Ensure that '<td>' cells using the headers attribute only refer to other cells in the same table, to improve screen reader user experience.
`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.
Screen readers and other assistive technologies have features to make navigating tables easier. Ensure that table headers refer to some set of cells, to improve screen reader user experience.

Internationalization and localization

`<html>` element has a `[lang]` attribute
It is advised to provide a lang attribute so that screen readers and other assistive technologies are guaranteed to announce the page's text correctly. When not provided, the user's default language setting will be used which may cause inaccuracies.
`<html>` element has a valid value for its `[lang]` attribute
Specify a valid BCP 47 language in order to help screen readers and other assistive technologies announce text properly.
`[lang]` attributes have a valid value
Specify a valid BCP 47 language on elements in order to help screen readers and other assistive technologies announce text properly.

Best practices

The document does not use `<meta http-equiv="refresh">`
Pages that refresh automatically cause a poor user experience as focus is directed back to the top of the page unexpectedly.
`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
For users with low vision who rely on screen magnification, ensure that zooming is not disabled.

Audio and video

`<video>` elements contain a `<track>` element with `[kind="captions"]`
Wikipedia.org may provide assistance to deaf or hearing-impaired users with captions on videos.

ARIA

ARIA IDs are not unique
Ensure all ARIA ID values are unique to prevent elements from being overlooked by assistive technologies, like a screen reader.
Failing Elements

Names and labels

Form elements do not have associated labels
Screen readers and other assistive technologies rely on labels to properly announce form controls.
Failing Elements

Manual Checks

The page has a logical tab order
The visual layout should be logical in its tab order and users cannot focus elements that are offscreen.
Interactive controls are keyboard focusable
Ensure that custom interactive controls are keyboard focusable and that a focus indicator is displayed.
Interactive elements indicate their purpose and state
Ensure that interactive elements (such as links and buttons) are distinguishable from non-interactive elements and that they indicate their state.
The user's focus is directed to new content added to the page
When new content (such as a dialogue) is added to the page, the user's focus should be directed to it.
User focus is not accidentally trapped in a region
Avoid focus being accidentally trapped when a user tabs in and out of controls or regions on page.
Custom controls have associated labels
Ensure that custom interactive controls have associated labels, which are provided by aria-label and aria-labelledby attributes.
Custom controls have ARIA roles
Ensure that all custom interactive controls have appropriate ARIA roles.
Visual order on the page follows DOM order
Ensure that the DOM order matches with the page's visual order, in order to improve navigation for screen readers and other assistive technologies.
Offscreen content is hidden from assistive technology
Ensure that offscreen content is hidden through the use of "display:none" styling or the aria-hidden attribute.
HTML5 landmark elements are used to improve navigation
Elements such as <main> and <nav> are recommended as they are used by screen readers and other assistive technologies to improve keyboard navigation.
92

Best Practices

Indicates the recommended, best practices currently in place on the page and highlights the best practices that wikipedia.org should incorporate. This includes practices such as protecting pages with HTTPS.

Audits

Avoids requesting the geolocation permission on page load
When requesting a user's location, provide context or consider tying the request to a user action to avoid confusion and mistrust from users.
Avoids requesting the notification permission on page load
When requesting permission to send notifications, provide context or consider tying the request to a user action to avoid confusion and mistrust from users.
Avoids front-end JavaScript libraries with known security vulnerabilities
Ensure that the use of third-party scripts is minimal and that only trusted third-party scripts are used as some may contain known security vulnerabilities which may be exploited by attackers.
Ensure CSP is effective against XSS attacks
Significantly reduce the risk of cross-site scripting attacks (XSS) by ensuring you have a strong Content Security Policy (CSP).
Description Directive Severity
No CSP found in enforcement mode
High

Audits

Allows users to paste into password fields
Ensure that password inputs may be pasted into to aid in the user's ability to use password managers and improve security.
Displays images with correct aspect ratio
Ensure that image display dimensions match their natural aspect ratio.
Serves images with appropriate resolution
For maximum image clarity, ensure images have natural dimensions and are proportional to the display size and pixel ratio.
Fonts with `font-display: optional` are preloaded
It is recommended that optional fonts are preloaded.

Audits

Page has the HTML doctype
Ensure a doctype is specified to prevent the browser from switching to quirks-mode.
Properly defines charset
It is advised to declare a character encoding, optionally via a <meta> tag in the first 1024 bytes of the HTML or in the Content-Type HTTP response header.

Audits

Detected JavaScript libraries
Below is a list of all front-end JavaScript libraries that were detected on the page.
Avoids deprecated APIs
Avoid deprecated APIs which will eventually be removed the browser.
No browser errors logged to the console
Below is a list of all errors logged to the console, which indicate unresolved problems on the site.
Page has valid source maps
Consider deploying source maps for added benefits such as the ability to debug while in production.
No issues in the `Issues` panel in Chrome Devtools
There may be unresolved issues logged to Chrome Devtools.

Audits

Does not use HTTPS — 1 insecure request found
Ensure that all pages are protected with HTTPS (including those that do not handle sensitive data) as HTTPS prevents tampering and passive listening on communications between the app and its users. Additionally, HTTPS is a prerequisite for HTTP/2 and many new web platform APIs.
Insecure URL Request Resolution
http://wikipedia.org/
Allowed
91

SEO

Indicates how well the page is optimized for ranking in search engines and highlights Search Engine Optimization (SEO) opportunities for wikipedia.org. This includes optimizations such as providing meta data.

Mobile Friendly

Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of wikipedia.org on mobile screens.
Document uses legible font sizes — 100% legible text
Font sizes of 12px or less are too small to most mobile users without user gestures and further action. Aim for more than 60% of page text to use font sizes greater than 12px.
Source Selector % of Page Text Font Size
100.00%
≥ 12px

Content Best Practices

Document has a `<title>` element
Search engines, screen reader users and other assistive technology users rely on the title to provide an overview of the page and to help determine if the page is relevant to their search.
Document has a meta description
Meta descriptions may be used by search engines when displaying a link to the page and should concisely summarize the page's content.
Links have descriptive text
Make use of descriptive link text to assist search engines in understanding the content.
Image elements have `[alt]` attributes
Provide short and descriptive alternative text where possible on informative elements.
Document has a valid `hreflang`
Search engines can be instructed to list specific versions of a page for a given language or region through the use of hreflang links.
Document has a valid `rel=canonical`
Search engines can be suggested which URL should be shown in search results through the use of canonical links.
Document avoids plugins
The content of plugins cannot be indexed by search engines and many devices either restrict or do not support them.

Crawling and Indexing

Page has successful HTTP status code
Avoid pages with unsuccessful HTTP status codes as they may not be indexed by search engines.
Links are crawlable
Ensure that the 'href' attribute of anchor elements links to the appropriate destination. This allows for more pages of the site to be discovered by search engines.
Page isn’t blocked from indexing
Pages that cannot be crawled by search engines cannot be indexed or included in their search results. Ensure that search engines have permission to crawl all pages that should be indexed.

Mobile Friendly

Tap targets are not sized appropriately — 91% appropriately sized tap targets
Interactive elements (such as buttons and links) should be appropriately spaced, sized and easy enough to select or tap with regard to their surrounding elements.
Tap Target Size Overlapping Target
110x24
242x15
110x24

Crawling and Indexing

robots.txt is not valid
Malformed robots.txt files prevent crawlers from understanding how a site wants to be crawled or indexed, which can be devastating to SEO.

Manual Checks

Structured data is valid
Structured data can be validated through the use of the Structured Data Testing Tool and the Structured Data Linter.
30

PWA

Indicates how valid the aspects of a Progressive Web App (PWA) are for the page and highlights opportunities to enable/improve the PWA of wikipedia.org. This includes details about web app manifests.

PWA Optimized

Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of wikipedia.org on mobile screens.
Provides a valid `apple-touch-icon`
iOS users of Progressive Web Apps will benefit from an apple touch icon, which can be defined with 'apple-touch-icon', which must point to a non-transparent 192px (or 180px) square PNG.

Installable

Web app manifest or service worker do not meet the installability requirements — 1 reason
User engagement may be increased by leveraging the browsers ability to proactively prompt users to add the app to their homescreen.
Failure reason
No manifest was fetched

PWA Optimized

Does not register a service worker that controls page and `start_url`
A service worker is used to provide Progressive Web Apps the use of features such as working offline, the ability for the app to be added to the homescreen as well as push notifications.
Is not configured for a custom splash screen
Themed splash screens ensure a high-quality user experience at launch for app users.
View Data
Does not set a theme color for the address bar.
A theme may be applied to the browser address bar, which ideally can be made to match the site.
View Data
Content is not sized correctly for the viewport
Ensure that the width of the app's content matches the width of the viewport, otherwise the app might not be optimized for mobile screens.
Manifest doesn't have a maskable icon
Maskable icons are great to ensure that images fill the entire shape when installing the app on a device.

Manual Checks

Site works cross-browser
Ensure that the Progressive Web App works correctly across every major browser.
Page transitions don't feel like they block on the network
Users perceive apps with responsive, snappy transitions as higher peforming and ensures a great user experience, even on a slow network.
Each page has a URL
Ensure that all pages are deep linkable via URL. They should also be unique for the purpose of shareability on social media.
Hosting

Server Location

Server IP Address: 208.80.154.224
Continent: North America
Country: United States
United States Flag
Region:
City:
Longitude: -97.822
Latitude: 37.751
Currencies: USD
USN
USS
Languages: English

Web Hosting Provider

Name IP Address
Wikimedia Foundation Inc.
Registration

Domain Registrant

Private Registration: Yes
Name: REDACTED FOR PRIVACY
Organization: Wikimedia Foundation, Inc.
Country: US
City: REDACTED FOR PRIVACY
State: CA
Post Code: REDACTED FOR PRIVACY
Email:
Phone: REDACTED FOR PRIVACY
Note: Registration information is derived from various sources and may be inaccurate.

Domain Registrar

Name IP Address
MarkMonitor, Inc. 104.18.39.152
Security

Visitor Safety

Mature Content: Not Likely
McAfee WebAdvisor Rating: Unknown
WOT Rating:
WOT Trustworthiness: 94/100
WOT Child Safety: 94/100
Note: Safety information is not guaranteed.

SSL/TLS Certificate

Issued To: *.wikipedia.org
Issued By: R3
Valid From: 23rd February, 2023
Valid To: 24th May, 2023
Subject: CN = *.wikipedia.org
Hash: b737d732
Issuer: CN = R3
O = Let's Encrypt
S = US
Version: 2
Serial Number: 0x03F31362E246377158C008441B600DC8F66E
Serial Number (Hex): 03F31362E246377158C008441B600DC8F66E
Valid From: 23rd February, 2024
Valid To: 24th May, 2024
Signature Algorithm (Short Name): RSA-SHA256
Signature Algorithm (Long Name): sha256WithRSAEncryption
Authority Key Identifier: keyid:14:2E:B3:17:B7:58:56:CB:AE:50:09:40:E6:1F:AF:9D:8B:14:C2:C6
Extended Key Usage: TLS Web Server Authentication, TLS Web Client Authentication
Certificate Policies: Policy: 2.23.140.1.2.1
Policy: 1.3.6.1.4.1.44947.1.1.1
CPS: http://cps.letsencrypt.org

Authority Information Access: OCSP - URI:http://r3.o.lencr.org
CA Issuers - URI:http://r3.i.lencr.org/

SCT List: Signed Certificate Timestamp:
Version : v1 (0x0)
Log ID : B7:3E:FB:24:DF:9C:4D:BA:75:F2:39:C5:BA:58:F4:6C:
5D:FC:42:CF:7A:9F:35:C4:9E:1D:09:81:25:ED:B4:99
Timestamp : Feb 23 09:07:09.240 2023 GMT
Extensions: none
Signature : ecdsa-with-SHA256
30:44:02:20:58:A7:70:EF:80:FC:61:55:C1:99:44:51:
17:07:90:50:2F:46:FA:C8:71:C3:68:E4:1A:20:A7:6F:
EB:EB:21:4E:02:20:0D:60:C9:3F:8A:07:B3:B4:9F:47:
A0:DE:18:37:0F:64:8B:36:B2:57:D9:55:FB:DF:31:25:
D8:00:B5:0D:54:E7
Signed Certificate Timestamp:
Version : v1 (0x0)
Log ID : E8:3E:D0:DA:3E:F5:06:35:32:E7:57:28:BC:89:6B:C9:
03:D3:CB:D1:11:6B:EC:EB:69:E1:77:7D:6D:06:BD:6E
Timestamp : Feb 23 09:07:09.238 2023 GMT
Extensions: none
Signature : ecdsa-with-SHA256
30:46:02:21:00:B4:AB:DC:78:0D:2D:B6:D8:13:6D:F3:
34:26:E0:D4:13:61:ED:E3:BC:5F:A5:9D:FD:F5:3D:ED:
58:CC:23:47:A6:02:21:00:83:84:9E:79:4D:15:1A:D1:
28:DE:13:11:8B:1A:81:17:37:F9:70:6C:85:D6:43:83:
C7:F1:8C:50:8A:B8:84:F4
Key Usage: Digital Signature
Basic Constraints: CA:FALSE
Subject Alternative Name: DNS:*.m.wikibooks.org
DNS:*.m.wikidata.org
DNS:*.m.wikimedia.org
DNS:*.m.wikinews.org
DNS:*.m.wikipedia.org
DNS:*.m.wikiquote.org
DNS:*.m.wikisource.org
DNS:*.m.wikiversity.org
DNS:*.m.wikivoyage.org
DNS:*.m.wiktionary.org
DNS:*.mediawiki.org
DNS:*.planet.wikimedia.org
DNS:*.wikibooks.org
DNS:*.wikidata.org
DNS:*.wikifunctions.org
DNS:*.wikimedia.org
DNS:*.wikimediafoundation.org
DNS:*.wikinews.org
DNS:*.wikipedia.org
DNS:*.wikiquote.org
DNS:*.wikisource.org
DNS:*.wikiversity.org
DNS:*.wikivoyage.org
DNS:*.wiktionary.org
DNS:*.wmfusercontent.org
DNS:mediawiki.org
DNS:w.wiki
DNS:wikibooks.org
DNS:wikidata.org
DNS:wikifunctions.org
DNS:wikimedia.org
DNS:wikimediafoundation.org
DNS:wikinews.org
DNS:wikipedia.org
DNS:wikiquote.org
DNS:wikisource.org
DNS:wikiversity.org
DNS:wikivoyage.org
DNS:wiktionary.org
DNS:wmfusercontent.org
DNS:*.m.mediawiki.org
Technical

DNS Lookup

HTTP Response Headers

HTTP-Code: HTTP/1.1 301 Moved Permanently
date: 28th March, 2023
server: mw1497.eqiad.wmnet
content-type: text/html; charset=iso-8859-1
location: https://www.wikipedia.org/
content-length: 234
vary: X-Forwarded-Proto
age: 67326
x-cache: cp1079 miss, cp1077 hit/147879
x-cache-status: hit-front
server-timing: cache;desc="hit-front", host;desc="cp1077"
strict-transport-security: max-age=106384710; includeSubDomains; preload
report-to: { "group"
nel: { "report_to"
set-cookie: *
x-client-ip: 67.205.137.127

Whois Lookup

Created: 13th January, 2001
Changed: 17th December, 2022
Expires: 13th January, 2024
Registrar: MarkMonitor Inc.
Status: clientDeleteProhibited
clientTransferProhibited
clientUpdateProhibited
Nameservers: ns0.wikimedia.org
ns1.wikimedia.org
ns2.wikimedia.org
Owner Name: REDACTED FOR PRIVACY
Owner Organization: Wikimedia Foundation, Inc.
Owner Street: REDACTED FOR PRIVACY
Owner Post Code: REDACTED FOR PRIVACY
Owner City: REDACTED FOR PRIVACY
Owner State: CA
Owner Country: US
Owner Phone: REDACTED FOR PRIVACY
Owner Email: Please query the RDDS service of the Registrar of Record identified in this output for information on how to contact the Registrant, Admin, or Tech contact of the queried domain name.
Admin Name: REDACTED FOR PRIVACY
Admin Organization: REDACTED FOR PRIVACY
Admin Street: REDACTED FOR PRIVACY
Admin Post Code: REDACTED FOR PRIVACY
Admin City: REDACTED FOR PRIVACY
Admin State: REDACTED FOR PRIVACY
Admin Country: REDACTED FOR PRIVACY
Admin Phone: REDACTED FOR PRIVACY
Admin Email: Please query the RDDS service of the Registrar of Record identified in this output for information on how to contact the Registrant, Admin, or Tech contact of the queried domain name.
Tech Name: REDACTED FOR PRIVACY
Tech Organization: REDACTED FOR PRIVACY
Tech Street: REDACTED FOR PRIVACY
Tech Post Code: REDACTED FOR PRIVACY
Tech City: REDACTED FOR PRIVACY
Tech State: REDACTED FOR PRIVACY
Tech Country: REDACTED FOR PRIVACY
Tech Phone: REDACTED FOR PRIVACY
Tech Email: Please query the RDDS service of the Registrar of Record identified in this output for information on how to contact the Registrant, Admin, or Tech contact of the queried domain name.
Full Whois: Domain Name: wikipedia.org
Registry Domain ID: d1a549fdfc3c4dd389c3c575a889efb1-LROR
Registrar WHOIS Server: http://whois.markmonitor.com
Registrar URL: http://www.markmonitor.com
Updated Date: 2022-12-17T09:19:13Z
Creation Date: 2001-01-13T00:12:14Z
Registry Expiry Date: 2024-01-13T00:12:14Z
Registrar: MarkMonitor Inc.
Registrar IANA ID: 292
Registrar Abuse Contact Email: abusecomplaints@markmonitor.com
Registrar Abuse Contact Phone: +1.2083895740
Domain Status: clientDeleteProhibited https://icann.org/epp#clientDeleteProhibited
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Domain Status: clientUpdateProhibited https://icann.org/epp#clientUpdateProhibited
Registry Registrant ID: REDACTED FOR PRIVACY
Registrant Name: REDACTED FOR PRIVACY
Registrant Organization: Wikimedia Foundation, Inc.
Registrant Street: REDACTED FOR PRIVACY
Registrant City: REDACTED FOR PRIVACY
Registrant State/Province: CA
Registrant Postal Code: REDACTED FOR PRIVACY
Registrant Country: US
Registrant Phone: REDACTED FOR PRIVACY
Registrant Phone Ext: REDACTED FOR PRIVACY
Registrant Fax: REDACTED FOR PRIVACY
Registrant Fax Ext: REDACTED FOR PRIVACY
Registrant Email: Please query the RDDS service of the Registrar of Record identified in this output for information on how to contact the Registrant, Admin, or Tech contact of the queried domain name.
Registry Admin ID: REDACTED FOR PRIVACY
Admin Name: REDACTED FOR PRIVACY
Admin Organization: REDACTED FOR PRIVACY
Admin Street: REDACTED FOR PRIVACY
Admin City: REDACTED FOR PRIVACY
Admin State/Province: REDACTED FOR PRIVACY
Admin Postal Code: REDACTED FOR PRIVACY
Admin Country: REDACTED FOR PRIVACY
Admin Phone: REDACTED FOR PRIVACY
Admin Phone Ext: REDACTED FOR PRIVACY
Admin Fax: REDACTED FOR PRIVACY
Admin Fax Ext: REDACTED FOR PRIVACY
Admin Email: Please query the RDDS service of the Registrar of Record identified in this output for information on how to contact the Registrant, Admin, or Tech contact of the queried domain name.
Registry Tech ID: REDACTED FOR PRIVACY
Tech Name: REDACTED FOR PRIVACY
Tech Organization: REDACTED FOR PRIVACY
Tech Street: REDACTED FOR PRIVACY
Tech City: REDACTED FOR PRIVACY
Tech State/Province: REDACTED FOR PRIVACY
Tech Postal Code: REDACTED FOR PRIVACY
Tech Country: REDACTED FOR PRIVACY
Tech Phone: REDACTED FOR PRIVACY
Tech Phone Ext: REDACTED FOR PRIVACY
Tech Fax: REDACTED FOR PRIVACY
Tech Fax Ext: REDACTED FOR PRIVACY
Tech Email: Please query the RDDS service of the Registrar of Record identified in this output for information on how to contact the Registrant, Admin, or Tech contact of the queried domain name.
Name Server: ns0.wikimedia.org
Name Server: ns1.wikimedia.org
Name Server: ns2.wikimedia.org
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of WHOIS database: 2023-03-28T23:14:45Z <<<

For more information on Whois status codes, please visit https://icann.org/epp

Terms of Use: Access to Public Interest Registry WHOIS information is provided to assist persons in determining the contents of a domain name registration record in the Public Interest Registry registry database. The data in this record is provided by Public Interest Registry for informational purposes only, and Public Interest Registry does not guarantee its accuracy. This service is intended only for query-based access. You agree that you will use this data only for lawful purposes and that, under no circumstances will you use this data to (a) allow, enable, or otherwise support the transmission by e-mail, telephone, or facsimile of mass unsolicited, commercial advertising or solicitations to entities other than the data recipient's own existing customers; or (b) enable high volume, automated, electronic processes that send queries or data to the systems of Registry Operator, a Registrar, or Identity Digital except as reasonably necessary to register domain names or modify existing registrations. All rights reserved. Public Interest Registry reserves the right to modify these terms at any time. By submitting this query, you agree to abide by this policy. The Registrar of Record identified in this output may have an RDDS service that can be queried for additional information on how to contact the Registrant, Admin, or Tech contact of the queried domain name.

Nameservers

Name IP Address
ns0.wikimedia.org 208.80.154.238
ns1.wikimedia.org 208.80.153.231
ns2.wikimedia.org 91.198.174.239
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