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

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.

Dark Mode Support

Action

No dark mode signals

FIX

No dark mode signals

No dark mode signals detected

Consider adding CSS with @media (prefers-color-scheme: dark) and <meta name='color-scheme' content='light dark'>.

Detection limited to meta tags and inline styles

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

Dark ModeNo Dark Mode Detected

color-scheme meta Not set ✗Dark theme-color Not set ✗CSS indicators Not detected ✗

Detection limited to meta tags and inline styles.

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 ✗

Navigation UX

Action

No navigation patterns

FIX

No navigation patterns

1 navigation landmark(s) detected

No breadcrumbs, search, or skip link detected

These navigation aids help users orient themselves and find content efficiently, especially on large sites.

Breadcrumbs

Skip Link

Labeled Navigation 1 <nav> element(s)

Hamburger Menu

Sticky Navigation Cannot reliably detect (CSS-based)

1 of 6 testable patterns navigation patterns detected. Limited navigation support. Consider adding breadcrumbs, search, and skip link.

404 Error Page

HTTP 404, custom page

REVIEW

HTTP 404, custom page

Correct 404 status code returned

Got: HTTP 404

Custom styled 404 page

Navigation links present on 404 page

404 Page Quality ✓ Custom 404 Page

Status Code HTTP 404 ✓Page Title 404: Page Not Found ✓Custom Styling ✓Navigation ✓Homepage Link ✗Search Form ✗

Favicon & Branding

4 icon(s) detected

REVIEW

4 icon(s) detected

favicon.ico present at site root

HTML icon links detected

Apple touch icon present

Multiple icon sizes detected

✓ favicon.ico Present

✓ PNG Icons Present

✓ Apple Touch Present

✗ SVG Favicon Missing

✗ Manifest Icons Missing

✓ Multiple Sizes Present

Color Contrast (Screenshot)

Action

20 text elements analyzed, 6 fail WCAG AA

REVIEW

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

14 pass 6 fail WCAG AA

h2 Firefox browsers

1.16:1

#000000

#161616

needs 3.0:1 (large text)

24px · above the fold

h2 Mozilla VPN

1.16:1

#000000

#161616

needs 3.0:1 (large text)

24px · above the fold

h2 Mozilla Monitor

1.16:1

#000000

#161616

needs 3.0:1 (large text)

24px · above the fold

h2 Firefox Relay

1.16:1

#000000

#161616

needs 3.0:1 (large text)

24px · mid-page

h2 MDN Plus

1.16:1

#000000

#161616

needs 3.0:1 (large text)

24px · mid-page

h2 Thunderbird

1.16:1

#000000

#161616

needs 3.0:1 (large text)

24px · mid-page

Show all checked elements (20)

Element	Ratio	Required	FG	BG	Result
h1 Welcome to Mozilla	21.00:1	3.0:1	#000000	#FFFFFF	Pass
h2 Help us improve your…	8.23:1	3.0:1	#000000	#A2A2A2	Pass
h2 Firefox browsers	1.16:1	3.0:1	#000000	#161616	Fail
h2 Mozilla VPN	1.16:1	3.0:1	#000000	#161616	Fail
h2 Mozilla Monitor	1.16:1	3.0:1	#000000	#161616	Fail
h2 Firefox Relay	1.16:1	3.0:1	#000000	#161616	Fail
h2 MDN Plus	1.16:1	3.0:1	#000000	#161616	Fail
h2 Thunderbird	1.16:1	3.0:1	#000000	#161616	Fail
h2 Solo	21.00:1	3.0:1	#000000	#FFFFFF	Pass
h2 0DIN	21.00:1	3.0:1	#000000	#FFFFFF	Pass
h2 Tabstack	21.00:1	3.0:1	#000000	#FFFFFF	Pass
h2 About Mozilla	21.00:1	3.0:1	#000000	#FFFFFF	Pass
h2 The Mozilla Manifest…	21.00:1	3.0:1	#000000	#FFFFFF	Pass
h2 Get Involved	21.00:1	3.0:1	#000000	#FFFFFF	Pass
h2 Blog	21.00:1	3.0:1	#000000	#FFFFFF	Pass
h2 Mozilla Foundation	21.00:1	3.0:1	#000000	#FFFFFF	Pass
h2 Mozilla.ai	21.00:1	3.0:1	#000000	#FFFFFF	Pass
h2 Mozilla Ventures	21.00:1	3.0:1	#000000	#FFFFFF	Pass
h2 Mozilla Advertising	21.00:1	3.0:1	#000000	#FFFFFF	Pass
h2 Mozilla Builders	21.00:1	3.0:1	#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.

Landmark Structure

9 landmarks

PASS

9 landmarks

<main> landmark present

1 <nav> landmark(s) found

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

A+

Heading Hierarchy

44 headings

PASS

44 headings

Single H1 present

1 empty heading(s)

Empty headings appear in the document outline but provide no information.

H2 Help us improve your Mozilla experience
H2 Firefox browsers
H2 Mozilla VPN
H2 Mozilla Monitor
H2 Firefox Relay
H2 MDN Plus
H2 Thunderbird
H2 Solo
H2 0DIN
H2 Tabstack
H2 About Mozilla
H2 The Mozilla Manifesto
H2 Get Involved
H2 Blog
H2 Mozilla Foundation
H2 Mozilla.ai
H2 Mozilla Ventures
H2 Mozilla Advertising
H2 Mozilla Builders
H2 Mozilla New Products
H1 Welcome to Mozilla
H2 Love the internet again
H2 Donate to Mozilla Foundation
H2 Join the movement: AI for the people
H3 Mozilla Data Collective
H3 Own What You Build
H3 Choice First Stack
H3 Mozilla Ventures
H3 A Double Bottom Line for Tech
H3 Agent Platform
H3 You, AI and the internet — what’s really going on?
H2 State of Mozilla
H3 2025
H2 Explore issues shaping the future of the internet
H3 The Validation Machines
H3 Nothing Personal
H3 Get Firefox news
H3 Thanks!
H2 (empty)
H2 Company
H2 Support
H2 Developers
H2 Follow @Mozilla
H2 Follow @Firefox

Empty headings appear in the document outline but provide no information.

Why this matters

Empty <hN> tags break the document outline — screen-reader users navigating by heading hit dead silence.

Source: WCAG 2.4.6

A+

Alt Text Quality

All 23 images OK

PASS

All 23 images OK

18 decorative image(s) correctly marked

5 image(s) with good alt text

23 images 5 good alt text 18 decorative

All images have appropriate alt text.

A+

Form Accessibility

All 6 controls labeled

PASS

All 6 controls labeled

6 control(s) properly labeled

6 controls

6 labeled

0 placeholder only

0 unlabeled

Control	Type	Label	Method
#id_newsletters_0	checkbox		none
#id_email	email	Your email address:	for/id
#id_country	select	Select country or region:	for/id
#id_lang	select	Select language:	for/id
#privacy	checkbox		none
#page-language-select	select	Language	for/id

Link & Button Quality

88 links, 7 buttons — all OK

PASS

88 links, 7 buttons — all OK

8 link(s) open in new tab without warning

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

Got: https://datacollective.mozillafoundation.org/?utm_source=www.mozilla.org&utm_…; https://www.youtube.com/watch?v=obRiQme2b3M; https://www.mozilla.ai/open-tools/choice-first-stack?utm_source=www.mozilla.o…; https://mozilla.vc/?utm_source=www.mozilla.org&utm_medium=referral&utm_campai…; https://www.youtube.com/watch?v=BoFUABRULxg; https://www.mozilla.ai/product/agent-platform?utm_source=www.mozilla.org&utm_…; https://www.theatlantic.com/ideas/archive/2025/10/validation-ai-raffi-krikori…; https://www.mozillafoundation.org/en/nothing-personal/?utm_source=www.mozilla…

80 link(s) with descriptive text

88 links

0 empty

0 generic text

8 new tab

0 empty buttons

Element	Text	Issue	Suggested Fix
https://www.firefox.com?utm_source=www.m…	Firefox browsers	img no alt	Add alt attribute to the image
/en-US/products/vpn/	Mozilla VPN	img no alt	Add alt attribute to the image
/en-US/products/monitor/	Mozilla Monitor	img no alt	Add alt attribute to the image
https://relay.firefox.com/?utm_source=ww…	Firefox Relay	img no alt	Add alt attribute to the image
https://developer.mozilla.org/plus?utm_s…	MDN Plus	img no alt	Add alt attribute to the image
https://www.thunderbird.net/?utm_source=…	Thunderbird	img no alt	Add alt attribute to the image
https://soloist.ai/?utm_source=www.mozil…	Solo	img no alt	Add alt attribute to the image
https://0din.ai/?utm_source=www.mozilla.…	0DIN	img no alt	Add alt attribute to the image
https://tabstack.ai/?utm_source=www.mozi…	Tabstack	img no alt	Add alt attribute to the image
https://datacollective.mozillafoundation…	Mozilla Data Collective	new tab	Add '(opens in new tab)' to text
https://www.youtube.com/watch?v=obRiQme2…	Own What You Build	new tab	Add '(opens in new tab)' to text
https://www.mozilla.ai/open-tools/choice…	Choice First Stack	new tab	Add '(opens in new tab)' to text
https://mozilla.vc/?utm_source=www.mozil…	Mozilla Ventures	new tab	Add '(opens in new tab)' to text
https://www.youtube.com/watch?v=BoFUABRU…	A Double Bottom Line for Tech	new tab	Add '(opens in new tab)' to text
https://www.mozilla.ai/product/agent-pla…	Agent Platform	new tab	Add '(opens in new tab)' to text
https://www.theatlantic.com/ideas/archiv…	The Validation Machines	new tab	Add '(opens in new tab)' to text
https://www.mozillafoundation.org/en/not…	Nothing Personal	new tab	Add '(opens in new tab)' to text

87 links and buttons have descriptive text

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

https://datacollective.mozillafoundation.org/?utm_source=www.mozilla.org&utm_…; https://www.youtube.com/watch?v=obRiQme2b3M; https://www.mozilla.ai/open-tools/choice-first-stack?utm_source=www.mozilla.o…; https://mozilla.vc/?utm_source=www.mozilla.org&utm_medium=referral&utm_campai…; https://www.youtube.com/watch?v=BoFUABRULxg; https://www.mozilla.ai/product/agent-platform?utm_source=www.mozilla.org&utm_…; https://www.theatlantic.com/ideas/archive/2025/10/validation-ai-raffi-krikori…; https://www.mozillafoundation.org/en/nothing-personal/?utm_source=www.mozilla…

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

A+

Lighthouse Accessibility Audits

Score 100/100 — 0 failing, 27 passed

PASS

100

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.

○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

●Form elements have associated labels

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

●Select elements have associated label elements.

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

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

●Elements use only permitted ARIA attributes

●Background and foreground colors have a sufficient contrast ratio

●Document has a `<title>` element

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

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

●Links have a discernible name

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

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

●Touch targets have sufficient size and spacing.

●`[lang]` attributes have a valid value

●Heading elements appear in a sequentially-descending order

●Document has a main landmark.

●Deprecated ARIA roles were not used

●Identical links have the same purpose.

○`[accesskey]` values are unique

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

○Elements with `role="dialog"` or `role="alertdialog"` 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

○Links are distinguishable without relying on color.

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

○`<object>` elements have alternate text

○Skip links are focusable.

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

○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.

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

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

○All heading elements contain content.

○Uses ARIA roles only on compatible elements

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

○Elements with visible text labels have matching accessible names.

○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.

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