Accessibility

· 13 checks — Landmarks, headings, alt text, forms, and link quality rolled into one auditable list.

SCORE

GRADE

FIX

REVIEW

PASS

INFO

Checks

6 PASS 3 REVIEW 4 FIX

Favicon & Branding

Action

1 icon(s) detected

FIX

1 icon(s) detected

favicon.ico present at site root

No apple-touch-icon detected

iOS devices use this when users add your site to their home screen. Add <link rel='apple-touch-icon' sizes='180x180' href='/apple-touch-icon.png'>.

✓ favicon.ico Present

✗ PNG Icons Missing

✗ Apple Touch Missing

✗ SVG Favicon Missing

✗ Manifest Icons Missing

✗ Multiple Sizes Missing

Web Manifest

Action

Not found

FIX

Not found

No web manifest found

No manifest at standard paths (/manifest.json, /site.webmanifest). A manifest is optional but enables PWA features like home screen installation and standalone display.

No web manifest found.

Print Stylesheet

Action

No print styles

FIX

No print styles

No print-specific styles detected

When users print this page, they get the screen layout including navigation and non-essential elements. Add @media print rules to hide navigation and optimize layout for paper.

Print Stylesheet No Print Styles

Print stylesheet Not found ✗Inline @media print Not detected ✗

Landmark Structure

2 landmarks

REVIEW

2 landmarks

<main> landmark present

No <nav> landmark found

No banner (header) landmark

Skip navigation link is missing (WCAG 2.4.1)

Add a skip link as the first focusable element so keyboard users can bypass repeated navigation.

Page Structure — as a screen reader sees it

Add a skip link as the first focusable element so keyboard users can bypass repeated navigation.

Why this matters

Without a skip-nav link, keyboard users tab through every nav item before reaching content — every page, every visit.

Learn more ▾

WCAG 2.4.1 (Bypass Blocks) requires a mechanism to skip past repeated content. The standard implementation is a 'Skip to main content' link that's the first focusable element, visually hidden until focused. Three lines of HTML + four of CSS.

Source: WCAG 2.1 SC 2.4.1

Dark Mode Support

Dark mode detected

REVIEW

Dark mode detected

prefers-color-scheme CSS detected in inline styles

Detection limited to meta tags and inline styles

External CSS files may contain prefers-color-scheme rules not visible to this scan.

Dark Mode✓ Dark Mode Supported

color-scheme meta Not set ✗Dark theme-color Not set ✗CSS indicators Detected ✓

Detection limited to meta tags and inline styles.

Lighthouse Accessibility Audits

Score 87/100 — 4 failing, 24 passed

REVIEW

Accessibility

These checks highlight opportunities to improve the accessibility of your web app. Automatic detection can only detect a subset of issues and does not guarantee the accessibility of your web app, so manual testing is also encouraged.

Contrast

Low-contrast text is difficult or impossible for many users to read. Learn how to provide sufficient color contrast.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Ask Question `div#mainbar > div.d-flex > div.ml12 > a.ws-nowrap`
more tags `div#mainbar > div.d-flex > div.flex--item > a.more-tags`
Broken name resolution and connection on wireguard interface when devices are o… `div#question-summary-1936943 > div.s-post-summary--content > h3.s-post-summary--content-title > a.s-link`
Mihir `div.s-user-card--info > div.s-user-card--link > a.flex--item > span`
8k `div#question-summary-1128864 > div.s-post-summary--stats > div.s-post-summary--stats-item > span.s-post-summary--stats-item-number`
views `div#question-summary-1128864 > div.s-post-summary--stats > div.s-post-summary--stats-item > span.s-post-summary--stats-item-unit`
Automated PuTTY session load and commands `div#question-summary-1128864 > div.s-post-summary--content > h3.s-post-summary--content-title > a.s-link`
Community `div.s-user-card--info > div.s-user-card--link > a.flex--item > span`
4k `div#question-summary-334139 > div.s-post-summary--stats > div.s-post-summary--stats-item > span.s-post-summary--stats-item-number`
views `div#question-summary-334139 > div.s-post-summary--stats > div.s-post-summary--stats-item > span.s-post-summary--stats-item-unit`
Executable does not exist in /usr/local/bin, but it does in /usr/bin, yet it st… `div#question-summary-334139 > div.s-post-summary--content > h3.s-post-summary--content-title > a.s-link`
Community `div.s-user-card--info > div.s-user-card--link > a.flex--item > span`
How to set an alias in Windows Command Line? `div#question-summary-560519 > div.s-post-summary--content > h3.s-post-summary--content-title > a.s-link`
Qwerty `div.s-user-card--info > div.s-user-card--link > a.flex--item > span`
Windows batch files: popd returns 0 error code but still triggers \|\| conditiona… `div#question-summary-1936942 > div.s-post-summary--content > h3.s-post-summary--content-title > a.s-link`
Regus Pregus `div.s-user-card--info > div.s-user-card--link > a.flex--item > span`
How do I preview a camera in Microsoft Teams? `div#question-summary-1936916 > div.s-post-summary--content > h3.s-post-summary--content-title > a.s-link`
Manngo `div.s-user-card--info > div.s-user-card--link > a.flex--item > span`
How do you find out the version number of Microsoft Publisher by clicking butto… `div#question-summary-1936902 > div.s-post-summary--content > h3.s-post-summary--content-title > a.s-link`
cachius `div.s-user-card--info > div.s-user-card--link > a.flex--item > span`
33k `div#question-summary-926077 > div.s-post-summary--stats > div.s-post-summary--stats-item > span.s-post-summary--stats-item-number`
views `div#question-summary-926077 > div.s-post-summary--stats > div.s-post-summary--stats-item > span.s-post-summary--stats-item-unit`
Remove entry from Microsoft Word Navigation Pane `div#question-summary-926077 > div.s-post-summary--content > h3.s-post-summary--content-title > a.s-link`
AJM `div.s-user-card--info > div.s-user-card--link > a.flex--item > span`
7k `div#question-summary-1491600 > div.s-post-summary--stats > div.s-post-summary--stats-item > span.s-post-summary--stats-item-number`
views `div#question-summary-1491600 > div.s-post-summary--stats > div.s-post-summary--stats-item > span.s-post-summary--stats-item-unit`
How can I set my preferred game controller through the registry? `div#question-summary-1491600 > div.s-post-summary--content > h3.s-post-summary--content-title > a.s-link`
Community `div.s-user-card--info > div.s-user-card--link > a.flex--item > span`
8k `div#question-summary-1004515 > div.s-post-summary--stats > div.s-post-summary--stats-item > span.s-post-summary--stats-item-number`
views `div#question-summary-1004515 > div.s-post-summary--stats > div.s-post-summary--stats-item > span.s-post-summary--stats-item-unit`
how to fix unknown directive error in nginx? `div#question-summary-1004515 > div.s-post-summary--content > h3.s-post-summary--content-title > a.s-link`
Community `div.s-user-card--info > div.s-user-card--link > a.flex--item > span`
9k `div#question-summary-1485706 > div.s-post-summary--stats > div.s-post-summary--stats-item > span.s-post-summary--stats-item-number`
views `div#question-summary-1485706 > div.s-post-summary--stats > div.s-post-summary--stats-item > span.s-post-summary--stats-item-unit`
How to delete Search History in Outlook 2016 `div#question-summary-1485706 > div.s-post-summary--content > h3.s-post-summary--content-title > a.s-link`
AJM `div.s-user-card--info > div.s-user-card--link > a.flex--item > span`
1k `div#question-summary-1718873 > div.s-post-summary--stats > div.s-post-summary--stats-item > span.s-post-summary--stats-item-number`
views `div#question-summary-1718873 > div.s-post-summary--stats > div.s-post-summary--stats-item > span.s-post-summary--stats-item-unit`
Windows Unable to delete file with reserved name `div#question-summary-1718873 > div.s-post-summary--content > h3.s-post-summary--content-title > a.s-link`
AJM `div.s-user-card--info > div.s-user-card--link > a.flex--item > span`
10k `div#question-summary-725630 > div.s-post-summary--stats > div.s-post-summary--stats-item > span.s-post-summary--stats-item-number`
views `div#question-summary-725630 > div.s-post-summary--stats > div.s-post-summary--stats-item > span.s-post-summary--stats-item-unit`
Where can I find the xmodemsend command in TeraTerm? `div#question-summary-725630 > div.s-post-summary--content > h3.s-post-summary--content-title > a.s-link`
Fady GG `div.s-user-card--info > div.s-user-card--link > a.flex--item > span`
1k `div#question-summary-1186984 > div.s-post-summary--stats > div.s-post-summary--stats-item > span.s-post-summary--stats-item-number`
views `div#question-summary-1186984 > div.s-post-summary--stats > div.s-post-summary--stats-item > span.s-post-summary--stats-item-unit`
Combine multiple ifs in bash `div#question-summary-1186984 > div.s-post-summary--content > h3.s-post-summary--content-title > a.s-link`
Kamil Maciorowski `div.s-user-card--info > div.s-user-card--link > a.flex--item > span`
Browse more Questions `div#content > div.inner-content > div#mainbar > a.s-btn`
Numerical iterative solution of a self-consistent non-linear integral equation `div#hot-network-questions > ul > li > a.js-gps-track`
If I throw a dildo during a basketball game to win a Kalshi bet, am I guilty of… `div#hot-network-questions > ul > li > a.js-gps-track`
What did Jesus mean by we will do greater things than he did `div#hot-network-questions > ul > li > a.js-gps-track`
How do I preview a camera in Microsoft Teams? `div#hot-network-questions > ul > li > a.js-gps-track`
Intro to Smooth Manifolds by Lee, Problem 6-13c `div#hot-network-questions > ul > li > a.js-gps-track`
80’s sci-fi show where the main character is picking up random stuff from trash… `div#hot-network-questions > ul > li > a.js-gps-track`
Strange bracket matching problem in exam class with the use of `\half` command `div#hot-network-questions > ul > li > a.js-gps-track`
How to get the timestamp of an electronic signature in PDF? `div#hot-network-questions > ul > li > a.js-gps-track`
Op-amp LED driver: residual current at Vin = 0 V `div#hot-network-questions > ul > li > a.js-gps-track`
How can I easily get an approximate measurement for the soil bearing strength w… `div#hot-network-questions > ul > li > a.js-gps-track`
An editor told to resubmit my journal paper as a new submission; I did and a di… `div#hot-network-questions > ul > li > a.js-gps-track`
HTTP 400 "Bad Request" - how may I diagnose this from server side? `div#hot-network-questions > ul > li > a.js-gps-track`
Story of planet where people telepathically know others' needs, show up where n… `div#hot-network-questions > ul > li.js-hidden > a.js-gps-track`
Isn't the voltage divider on the right equivalent of the one on the left? `div#hot-network-questions > ul > li.js-hidden > a.js-gps-track`
LibreOffice added blue dots and a "Responsible" field on each page after saving… `div#hot-network-questions > ul > li.js-hidden > a.js-gps-track`
Why does a mixed regression model return only one of two highly correlated vari… `div#hot-network-questions > ul > li.js-hidden > a.js-gps-track`
Why present perfect simple but not continuous? `div#hot-network-questions > ul > li.js-hidden > a.js-gps-track`
Why is "cross" used for stage movements in scripts? `div#hot-network-questions > ul > li.js-hidden > a.js-gps-track`
How should I contextualise group theory results? `div#hot-network-questions > ul > li.js-hidden > a.js-gps-track`
What are the impacts of a homebrew feature allowing Ready as a bonus action? `div#hot-network-questions > ul > li.js-hidden > a.js-gps-track`
Determining a quadrilateral up to similarity with four angles `div#hot-network-questions > ul > li.js-hidden > a.js-gps-track`
How do believers in ontological randomness explain why the universe follows sta… `div#hot-network-questions > ul > li.js-hidden > a.js-gps-track`
Be troubled with `div#hot-network-questions > ul > li.js-hidden > a.js-gps-track`
KVM bridged networking with a single network adapter and external DHCP? `div#hot-network-questions > ul > li.js-hidden > a.js-gps-track`
Recent questions feed `div.inner-content > div#sidebar > div#feed-link > a`
SUPER USER `nav.site-footer--nav > div.site-footer--col > h5.-title > a`
COMPANY `nav.site-footer--nav > div.site-footer--col > h5.-title > a.js-gps-track`
STACK EXCHANGE NETWORK `div.site-footer--col > div > h5.-title > a`
Site design / logo © 2026 Stack Exchange Inc; `div.site-footer--container > div.site-footer--copyright > p.md:mb0 > span`
user contributions licensed under `div.site-footer--container > div.site-footer--copyright > p.md:mb0 > span`
rev 2026.4.21.42306 `div.site-footer--container > div.site-footer--copyright > p.md:mb0 > span#svnrev`

These are opportunities to improve the legibility of your content.

Navigation

Properly ordered headings that do not skip levels convey the semantic structure of the page, making it easier to navigate and understand when using assistive technologies. Learn more about heading order.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Broken name resolution and connection on wireguard interface when devices are o… `div > div#question-summary-1936943 > div.s-post-summary--content > h3.s-post-summary--content-title`

These are opportunities to improve keyboard navigation in your application.

Names and labels

Link text (and alternate text for images, when used as links) that is discernible, unique, and focusable improves the navigation experience for screen reader users. Learn how to make links accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
body.home-page > header.s-topbar > div.s-topbar--container > a.s-topbar--menu-btn `body.home-page > header.s-topbar > div.s-topbar--container > a.s-topbar--menu-btn`
body.home-page > header.s-topbar > div.s-topbar--container > a.s-topbar--logo `body.home-page > header.s-topbar > div.s-topbar--container > a.s-topbar--logo`

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

Best practices

Touch targets with sufficient size and spacing help users who may have difficulty targeting small controls to activate the targets. Learn more about touch targets.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Technology `div > ul.-list > li > a.-link`
Business `div > ul.-list > li > a.-link`

These items highlight common accessibility best practices.

○Interactive controls are keyboard focusable

○Interactive elements indicate their purpose and state

○The page has a logical tab order

○Visual order on the page follows DOM order

○User focus is not accidentally trapped in a region

○The user's focus is directed to new content added to the page

○HTML5 landmark elements are used to improve navigation

○Offscreen content is hidden from assistive technology

○Custom controls have associated labels

○Custom controls have ARIA roles

●`[aria-*]` attributes match their roles

●`[aria-hidden="true"]` is not present on the document `<body>`

●`[role]`s have all required `[aria-*]` attributes

●`[role]` values are valid

●`[aria-*]` attributes have valid values

●`[aria-*]` attributes are valid and not misspelled

●Buttons have an accessible name

●Image elements have `[alt]` attributes

●`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.

●ARIA attributes are used as specified for the element's role

●Elements with `role="dialog"` or `role="alertdialog"` have accessible names.

●`[aria-hidden="true"]` elements do not contain focusable descendents

●Elements use only permitted ARIA attributes

●Document has a `<title>` element

●`<html>` element has a `[lang]` attribute

●`<html>` element has a valid value for its `[lang]` attribute

●Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).

●List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements

●No element has a `[tabindex]` value greater than 0

●Document has a main landmark.

●Deprecated ARIA roles were not used

●Uses ARIA roles only on compatible elements

●Identical links have the same purpose.

●Elements with visible text labels have matching accessible names.

○`[accesskey]` values are unique

○`button`, `link`, and `menuitem` elements have accessible names

○ARIA input fields have accessible names

○ARIA `meter` elements have accessible names

○ARIA `progressbar` elements have accessible names

○Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.

○`[role]`s are contained by their required parent element

○Elements with the `role=text` attribute do not have focusable descendents.

○ARIA toggle fields have accessible names

○ARIA `tooltip` elements have accessible names

○ARIA `treeitem` elements have accessible names

○The page contains a heading, skip link, or landmark region

○`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.

○Definition list items are wrapped in `<dl>` elements

○ARIA IDs are unique

○No form fields have multiple labels

○`<frame>` or `<iframe>` elements have a title

○`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.

○Input buttons have discernible text.

○`<input type="image">` elements have `[alt]` text

○Form elements have associated labels

○Links are distinguishable without relying on color.

○The document does not use `<meta http-equiv="refresh">`

○`<object>` elements have alternate text

○Select elements have associated label elements.

○Skip links are focusable.

○Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.

○`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.

○`[lang]` attributes have a valid value

○`<video>` elements contain a `<track>` element with `[kind="captions"]`

○Tables have different content in the summary attribute and `<caption>`.

○All heading elements contain content.

○Image elements do not have `[alt]` attributes that are redundant text.

○Tables use `<caption>` instead of cells with the `[colspan]` attribute to indicate a caption.

○`<td>` elements in a large `<table>` have one or more table headers.

A+

Heading Hierarchy

3 headings

PASS

3 headings

Single H1 present

H1 superuser.com
H2 Performing security verification
H2 Verification successful. Waiting for superuser.com to respond

A+

Alt Text Quality

No images

PASS

No images

No images on this page

No images on this page.

A+

Form Accessibility

No form controls

PASS

No form controls

No form controls on this page

No form controls found.

Link & Button Quality

2 links, 0 buttons — all OK

PASS

2 links, 0 buttons — all OK

2 link(s) open in new tab without warning

Add '(opens in new tab)' to link text or aria-label.

Got: https://www.cloudflare.com?utm_source=challenge&utm_campaign=m; https://www.cloudflare.com/privacypolicy/

2 links

0 empty

0 generic text

2 new tab

0 empty buttons

Element	Text	Issue	Suggested Fix
https://www.cloudflare.com?utm_source=ch…	Cloudflare	new tab	Add '(opens in new tab)' to text
https://www.cloudflare.com/privacypolicy…	Privacy	new tab	Add '(opens in new tab)' to text

Add '(opens in new tab)' to link text or aria-label.

https://www.cloudflare.com?utm_source=challenge&utm_campaign=m; https://www.cloudflare.com/privacypolicy/

Why this matters

Links with target="_blank" without rel="noopener" leak the originating page's window context — security and UX issue.

Learn more ▾

Without rel="noopener", the new tab can navigate the original tab via window.opener (tab-nabbing attack). Modern browsers default to noopener for target=_blank but only since recent versions. Always set rel="noopener noreferrer" explicitly.

Source: MDN target / OWASP

404 Error Page

HTTP 404, custom page

PASS

HTTP 404, custom page

Correct 404 status code returned

Got: HTTP 404

Custom styled 404 page

Navigation links present on 404 page

Homepage link present on 404 page

Search form present on 404 page

404 Page Quality ✓ Custom 404 Page

Status Code HTTP 404 ✓Page Title Page not found - Super User ✓Custom Styling ✓Navigation ✓Homepage Link ✓Search Form ✓

A+

Color Contrast (Screenshot)

10 text elements analyzed, 0 fail WCAG AA

PASS

Analyzes text contrast against the actual rendered page, including background images, gradients, and overlays that CSS-based tools cannot detect.

10 pass

Show all checked elements (10)

Element	Ratio	Required	FG	BG	Result
h1 superuser.com	21.00:1	3.0:1	#000000	#FFFFFF	Pass
h2 Performing security …	21.00:1	3.0:1	#000000	#FFFFFF	Pass
h2 Verification success…	21.00:1	3.0:1	#000000	#FFFFFF	Pass
title Just a moment...	21.00:1	4.5:1	#000000	#FFFFFF	Pass
p This website uses a …	21.00:1	4.5:1	#000000	#FFFFFF	Pass
div Ray ID:	21.00:1	4.5:1	#000000	#FFFFFF	Pass
code 9effbbb15e3bb969	21.00:1	4.5:1	#000000	#FFFFFF	Pass
span Performance and Secu…	21.00:1	4.5:1	#000000	#FFFFFF	Pass
a Cloudflare	21.00:1	4.5:1	#000000	#FFFFFF	Pass
a Privacy	21.00:1	4.5:1	#000000	#FFFFFF	Pass

Methodology: The top 20 text elements by font size were checked. Background color was sampled from the desktop screenshot using a 5-point pattern. WCAG 2.1 AA requires 4.5:1 for normal text and 3:1 for large text.

All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.