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Accessibility

· 13 checks — Landmarks, headings, alt text, forms, and link quality rolled into one auditable list.
SCORE
59
GRADE
D
FIX
5
REVIEW
4
PASS
4
INFO
0
Checks
13
4 PASS 4 REVIEW 5 FIX
F
Favicon & Branding
Action
2 icon(s) detected
FIX
2 icon(s) detected
Info::
favicon.ico present at site root
Info::
HTML icon links detected
Info::
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 Present
✗ Apple Touch Missing
✗ SVG Favicon Missing
✗ Manifest Icons Missing
✗ Multiple Sizes Missing
D
Web Manifest
Action
Not found
FIX
Not found
Info::
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.

D
Dark Mode Support
Action
No dark mode signals
FIX
No dark mode signals
Info::
No dark mode signals detected
Consider adding CSS with @media (prefers-color-scheme: dark) and <meta name='color-scheme' content='light dark'>.
Info::
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.

D
Print Stylesheet
Action
No print styles
FIX
No print styles
Info::
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 ✗
F
Navigation UX
Action
1 navigation pattern(s)
FIX
1 navigation pattern(s)
Info::
Search functionality detected
Got: role-search
Info::
5 navigation landmark(s) detected
Breadcrumbs
Search role='search' landmark
Skip Link
Labeled Navigation 5 <nav> element(s)
Back to Top
Hamburger Menu
Sticky Navigation Cannot reliably detect (CSS-based)
2 of 6 testable patterns navigation patterns detected. Limited navigation support. Consider adding breadcrumbs, search, and skip link.
C
Form Accessibility
Action
4 of 45 controls have issues
REVIEW
4 of 45 controls have issues
Critical::
4 control(s) without accessible label
Form controls need a <label>, aria-label, or aria-labelledby for screen readers.
Got: <input type="checkbox" id="CybotCookiebotDialogBodyLevelButtonNecessaryInline">; <input type="checkbox" id="CybotCookiebotDialogBodyLevelButtonPreferencesInline">; <input type="checkbox" id="CybotCookiebotDialogBodyLevelButtonStatisticsInline">; <input type="checkbox" id="CybotCookiebotDialogBodyLevelButtonMarketingInline">
Info::
41 control(s) properly labeled
45 controls
41 labeled
0 placeholder only
4 unlabeled
ControlTypeLabelMethod
#CybotCookiebotDialogBodyLevelButtonNecessarycheckboxNecessaryfor/id
#CybotCookiebotDialogBodyLevelButtonPreferencescheckboxPreferencesfor/id
#CybotCookiebotDialogBodyLevelButtonStatisticscheckboxAnalyticsfor/id
#CybotCookiebotDialogBodyLevelButtonMarketingcheckboxMarketingfor/id
#CybotCookiebotDialogBodyLevelButtonIABPurpose1checkboxStore and/or access information on a devicefor/id
#CybotCookiebotDialogBodyLevelButtonIABPurpose2checkboxUse limited data to select advertisingfor/id
#CybotCookiebotDialogBodyLevelButtonIABPurposeLegitimateInterest2checkboxLegitimate Interestfor/id
#CybotCookiebotDialogBodyLevelButtonIABPurpose3checkboxCreate profiles for personalised advertisingfor/id
#CybotCookiebotDialogBodyLevelButtonIABPurpose4checkboxUse profiles to select personalised advertisingfor/id
#CybotCookiebotDialogBodyLevelButtonIABPurpose5checkboxCreate profiles to personalise contentfor/id
#CybotCookiebotDialogBodyLevelButtonIABPurpose6checkboxUse profiles to select personalised contentfor/id
#CybotCookiebotDialogBodyLevelButtonIABPurpose7checkboxMeasure advertising performancefor/id
#CybotCookiebotDialogBodyLevelButtonIABPurposeLegitimateInterest7checkboxLegitimate Interestfor/id
#CybotCookiebotDialogBodyLevelButtonIABPurpose8checkboxMeasure content performancefor/id
#CybotCookiebotDialogBodyLevelButtonIABPurposeLegitimateInterest8checkboxLegitimate Interestfor/id
#CybotCookiebotDialogBodyLevelButtonIABPurpose9checkboxUnderstand audiences through statistics or combinations of data from different sourcesfor/id
#CybotCookiebotDialogBodyLevelButtonIABPurposeLegitimateInterest9checkboxLegitimate Interestfor/id
#CybotCookiebotDialogBodyLevelButtonIABPurpose10checkboxDevelop and improve servicesfor/id
#CybotCookiebotDialogBodyLevelButtonIABPurposeLegitimateInterest10checkboxLegitimate Interestfor/id
#CybotCookiebotDialogBodyLevelButtonIABPurpose11checkboxUse limited data to select contentfor/id
#CybotCookiebotDialogBodyLevelButtonIABPurposeLegitimateInterest11checkboxLegitimate Interestfor/id
#CybotCookiebotDialogBodyLevelButtonIABFeature1checkboxUse precise geolocation datafor/id
#CybotCookiebotDialogBodyLevelButtonIABFeature2checkboxActively scan device characteristics for identificationfor/id
#CybotCookiebotDialogBodyLevelButtonIABVendor259checkboxADYOULIKE SAfor/id
#CybotCookiebotDialogBodyLevelButtonIABVendor793checkboxAmazon Adsfor/id
#CybotCookiebotDialogBodyLevelButtonIABVendorLegitimateInterest126checkboxLegitimate Interestfor/id
#CybotCookiebotDialogBodyLevelButtonIABVendor877checkboxExperian LTDfor/id
#CybotCookiebotDialogBodyLevelButtonIABVendor755checkboxGoogle Advertising Productsfor/id
#CybotCookiebotDialogBodyLevelButtonIABVendorLegitimateInterest755checkboxLegitimate Interestfor/id
#CybotCookiebotDialogBodyLevelButtonIABVendor804checkboxLinkedIn Ireland Unlimited Companyfor/id
#CybotCookiebotDialogBodyLevelButtonIABVendorLegitimateInterest804checkboxLegitimate Interestfor/id
#CybotCookiebotDialogBodyLevelButtonIABVendor812checkboxNielsen International SAfor/id
#CybotCookiebotDialogBodyLevelButtonIABVendorLegitimateInterest812checkboxLegitimate Interestfor/id
#CybotCookiebotDialogBodyLevelButtonIABVendor373checkboxNielsen Media Research Ltd.for/id
#CybotCookiebotDialogBodyLevelButtonIABVendor11checkboxQuantcastfor/id
#CybotCookiebotDialogBodyLevelButtonIABVendorLegitimateInterest11checkboxLegitimate Interestfor/id
#CybotCookiebotDialogBodyLevelButtonIABVendor132checkboxTeads France SASfor/id
#CybotCookiebotDialogBodyLevelButtonIABVendorLegitimateInterest132checkboxLegitimate Interestfor/id
#CybotCookiebotDialogBodyLevelButtonIABVendor524checkboxThe Ozone Project Limitedfor/id
#CybotCookiebotDialogBodyLevelButtonIABVendor726checkboxYouGovfor/id
#CybotCookiebotDialogBodyContentCheckboxPersonalInformationcheckboxDo not sell or share my personal informationfor/id
#CybotCookiebotDialogBodyLevelButtonPreferencesInlinecheckbox(none)none
#CybotCookiebotDialogBodyLevelButtonStatisticsInlinecheckbox(none)none
#CybotCookiebotDialogBodyLevelButtonMarketingInlinecheckbox(none)none
#CybotCookiebotDialogBodyLevelButtonNecessaryInlinecheckbox(none)none

Form controls need a <label>, aria-label, or aria-labelledby for screen readers.

<input type="checkbox" id="CybotCookiebotDialogBodyLevelButtonNecessaryInline">; <input type="checkbox" id="CybotCookiebotDialogBodyLevelButtonPreferencesInline">; <input type="checkbox" id="CybotCookiebotDialogBodyLevelButtonStatisticsInline">; <input type="checkbox" id="CybotCookiebotDialogBodyLevelButtonMarketingInline">

Why this matters

Form controls without labels — assistive tech announces 'edit text' with no context; users can't complete forms.

Source: WCAG 2.1 SC 3.3.2

B
404 Error Page
HTTP 404, custom page
REVIEW
HTTP 404, custom page
Info::
Correct 404 status code returned
Got: HTTP 404
Info::
Custom styled 404 page
Info::
Navigation links present on 404 page
Info::
Homepage link present on 404 page
404 Page Quality ✓ Custom 404 Page
Status Code HTTP 404 ✓Page Title Page not found | National Gallery, London ✓Custom Styling ✓Navigation ✓Homepage Link ✓Search Form ✗
C
Color Contrast (Screenshot)
Action
20 text elements analyzed, 20 fail WCAG AA
REVIEW

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

0 pass 20 fail WCAG AA
h1 The National Gallery, London
1.22:1
#000000
on
#171C1C
needs 3.0:1 (large text)
32px · bottom of viewport
h2 Bringing people and paintings together
1.22:1
#000000
on
#171C1C
needs 3.0:1 (large text)
24px · bottom of viewport
h2 Make the most of your visit
1.22:1
#000000
on
#171C1C
needs 3.0:1 (large text)
24px · bottom of viewport
h2 Exhibitions and displays
1.22:1
#000000
on
#171C1C
needs 3.0:1 (large text)
24px · bottom of viewport
h2 Events
1.22:1
#000000
on
#171C1C
needs 3.0:1 (large text)
24px · bottom of viewport
h2 Membership
1.22:1
#000000
on
#171C1C
needs 3.0:1 (large text)
24px · bottom of viewport
h2 Across the UK
1.22:1
#000000
on
#171C1C
needs 3.0:1 (large text)
24px · bottom of viewport
h2 From home
1.22:1
#000000
on
#171C1C
needs 3.0:1 (large text)
24px · bottom of viewport
h2 Follow our stories
1.22:1
#000000
on
#171C1C
needs 3.0:1 (large text)
24px · bottom of viewport
h2 Footer
1.22:1
#000000
on
#171C1C
needs 3.0:1 (large text)
24px · bottom of viewport
h3 Our must-see paintings
1.22:1
#000000
on
#171C1C
needs 3.0:1 (large text)
19px · bottom of viewport
h3 Eat and drink
1.22:1
#000000
on
#171C1C
needs 3.0:1 (large text)
19px · bottom of viewport
h3 Shop
1.22:1
#000000
on
#171C1C
needs 3.0:1 (large text)
19px · bottom of viewport
h3 Explore as a family
1.22:1
#000000
on
#171C1C
needs 3.0:1 (large text)
19px · bottom of viewport
h3 Wright of Derby: From the Shadows
1.22:1
#000000
on
#171C1C
needs 3.0:1 (large text)
19px · bottom of viewport
h3 Stubbs: Portrait of a Horse
1.22:1
#000000
on
#171C1C
needs 3.0:1 (large text)
19px · bottom of viewport
h3 Zurbarán
1.22:1
#000000
on
#171C1C
needs 3.0:1 (large text)
19px · bottom of viewport
h3 Waldmüller: Landscapes
1.22:1
#000000
on
#171C1C
needs 3.0:1 (large text)
19px · bottom of viewport
h3 Renoir and Love
1.22:1
#000000
on
#171C1C
needs 3.0:1 (large text)
19px · bottom of viewport
h3 Van Eyck: The Portraits
1.22:1
#000000
on
#171C1C
needs 3.0:1 (large text)
19px · bottom of viewport
Show all checked elements (20)
ElementRatioRequiredFGBGResult
h1 The National Gallery…1.22:13.0:1
#000000
#171C1C
Fail
h2 Bringing people and …1.22:13.0:1
#000000
#171C1C
Fail
h2 Make the most of you…1.22:13.0:1
#000000
#171C1C
Fail
h2 Exhibitions and disp…1.22:13.0:1
#000000
#171C1C
Fail
h2 Events1.22:13.0:1
#000000
#171C1C
Fail
h2 Membership1.22:13.0:1
#000000
#171C1C
Fail
h2 Across the UK1.22:13.0:1
#000000
#171C1C
Fail
h2 From home1.22:13.0:1
#000000
#171C1C
Fail
h2 Follow our stories1.22:13.0:1
#000000
#171C1C
Fail
h2 Footer1.22:13.0:1
#000000
#171C1C
Fail
h3 Our must-see paintin…1.22:13.0:1
#000000
#171C1C
Fail
h3 Eat and drink1.22:13.0:1
#000000
#171C1C
Fail
h3 Shop1.22:13.0:1
#000000
#171C1C
Fail
h3 Explore as a family1.22:13.0:1
#000000
#171C1C
Fail
h3 Wright of Derby: Fro…1.22:13.0:1
#000000
#171C1C
Fail
h3 Stubbs: Portrait of …1.22:13.0:1
#000000
#171C1C
Fail
h3 Zurbarán1.22:13.0:1
#000000
#171C1C
Fail
h3 Waldmüller: Landsca…1.22:13.0:1
#000000
#171C1C
Fail
h3 Renoir and Love1.22:13.0:1
#000000
#171C1C
Fail
h3 Van Eyck: The Portra…1.22:13.0:1
#000000
#171C1C
Fail

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.

A
Landmark Structure
11 landmarks
PASS
11 landmarks
Info::
<main> landmark present
Info::
5 <nav> landmark(s) found
Info::
All <nav> elements are properly labeled
Warning::
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.
Info::
Search landmark present
Page Structure — as a screen reader sees it
BANNER header NAV "Main menu" SEARCH MAIN CONTENTINFO footer

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
43 headings
PASS
43 headings
Info::
Single H1 present
  • H1 The National Gallery, London
  • H2 Bringing people and paintings together
  • H2 Make the most of your visit
  • H3 Our must-see paintings
  • H3 Eat and drink
  • H3 Shop
  • H3 Explore as a family
  • H2 Exhibitions and displays
  • H3 Wright of Derby: From the Shadows
  • H3 Stubbs: Portrait of a Horse
  • H3 Zurbarán
  • H3 Waldmüller: Landscapes
  • H3 Renoir and Love
  • H3 Van Eyck: The Portraits
  • H3 Catharina van Hemessen: Signature Works
  • H2 Events
  • H3 The English table: Celebrating British asparagus season!
  • H3 Guided tours of Longford Castle
  • H3 Guided tour
  • H3 Friday Lates
  • H3 A literary salon: Chiaroscuro: A poetic interpretation of light and dark
  • H3 Leaves and layering: Botanical gelli printmaking
  • H3 Friday Lates life drawing: Originary Arts
  • H3 Friday Lates music: Alice Boyd and Rachel Kitchlew
  • H3 Friday Lates: Stilled shadows: A magic lantern show with Chloe Aridjis
  • H3 Friday Lates tour and poetry readings: SJ Fowler and guests
  • H3 The Roden Centre for Creative Learning: The Welcome space, our dedicated space for families
  • H3 Online Take One Picture CPD: 2025-2026
  • H2 Membership
  • H2 Across the UK
  • H2 From home
  • H3 Picture of the month
  • H3 Courses
  • H3 National Gallery Imaginarium
  • H3 The Keeper of Paintings
  • H3 Make and create
  • H2 Follow our stories
  • H2 Footer
  • H3 Brighten up your inbox
  • H3 About us
  • H3 Commercial
  • H3 Work with us
  • H3 User information
A
Alt Text Quality
2 of 88 images have issues
PASS
2 of 88 images have issues
Warning::
2 image(s) with generic alt text
Info::
14 decorative image(s) correctly marked
Info::
72 image(s) with good alt text
88 images 72 good alt text 14 decorative 2 generic
IssueCount
generic2 image(s)
A+
Lighthouse Accessibility Audits
Score 97/100 — 1 failing, 27 passed
PASS
97

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
EXHIBITION article.ng-card > a.dl-product-link > div.panel-content > div.tag
Until 31 May 2026 article.ng-card > a.dl-product-link > div.panel-content > div.date
Free article.ng-card > a.dl-product-link > div.panel-content > div.cost
EXHIBITION article.ng-card > a.dl-product-link > div.panel-content > div.tag
Zurbarán a.dl-product-link > div.panel-content > div.title > h3
2 May ‒ 23 August 2026 article.ng-card > a.dl-product-link > div.panel-content > div.date
EXHIBITION article.ng-card > a.dl-product-link > div.panel-content > div.tag
Waldmüller: Landscapes a.dl-product-link > div.panel-content > div.title > h3
2 July – 20 September 2026 article.ng-card > a.dl-product-link > div.panel-content > div.date
Free article.ng-card > a.dl-product-link > div.panel-content > div.cost
EXHIBITION article.ng-card > a.dl-product-link > div.panel-content > div.tag
Renoir and Love a.dl-product-link > div.panel-content > div.title > h3
3 October 2026 – 31 January 2027 article.ng-card > a.dl-product-link > div.panel-content > div.date
EXHIBITION article.ng-card > a.dl-product-link > div.panel-content > div.tag
Van Eyck: The Portraits a.dl-product-link > div.panel-content > div.title > h3
21 November 2026 – 11 April 2027 article.ng-card > a.dl-product-link > div.panel-content > div.date
EXHIBITION article.ng-card > a.dl-product-link > div.panel-content > div.tag
Catharina van Hemessen: Signature Works a.dl-product-link > div.panel-content > div.title > h3
4 March – 30 May 2027 article.ng-card > a.dl-product-link > div.panel-content > div.date
Free article.ng-card > a.dl-product-link > div.panel-content > div.cost
Fully booked article.ng-card > a.dl-product-link > div.thumbnail > div.status
FOR EVERYONE a.dl-product-link > div.panel-content > div > div.audience
TOUR a.dl-product-link > div.panel-content > div > div.category
Guided tours of Longford Castle div.panel-content > div > div.title > h3.trimmed
Various dates from 23 April 2026 a.dl-product-link > div.panel-content > div > div.date
FOR EVERYONE a.dl-product-link > div.panel-content > div > div.audience
TOUR a.dl-product-link > div.panel-content > div > div.category
Guided tour div.panel-content > div > div.title > h3.trimmed
Tuesdays, Wednesdays, Thursdays (excluding public holidays) a.dl-product-link > div.panel-content > div > div.date
FOR EVERYONE a.dl-product-link > div.panel-content > div > div.audience
FESTIVAL a.dl-product-link > div.panel-content > div > div.category
Friday Lates div.panel-content > div > div.title > h3.trimmed
Fridays a.dl-product-link > div.panel-content > div > div.date
FOR HOUSE AND EXHIBITION MEMBERS a.dl-product-link > div.panel-content > div > div.audience
PERFORMANCE a.dl-product-link > div.panel-content > div > div.category
A literary salon: Chiaroscuro: A poetic interpretation of light and dark div.panel-content > div > div.title > h3.trimmed
Friday, 24 April 2026 a.dl-product-link > div.panel-content > div > div.date
FOR EVERYONE a.dl-product-link > div.panel-content > div > div.audience
COURSES | ART MAKING a.dl-product-link > div.panel-content > div > div.category
Leaves and layering: Botanical gelli printmaking div.panel-content > div > div.title > h3.trimmed
Friday, 24 April 2026 a.dl-product-link > div.panel-content > div > div.date
FOR EVERYONE a.dl-product-link > div.panel-content > div > div.audience
WORKSHOP a.dl-product-link > div.panel-content > div > div.category
Friday Lates life drawing: Originary Arts div.panel-content > div > div.title > h3.trimmed
Friday, 24 April 2026 a.dl-product-link > div.panel-content > div > div.date
FOR EVERYONE a.dl-product-link > div.panel-content > div > div.audience
MUSIC AND PERFORMANCE a.dl-product-link > div.panel-content > div > div.category
Friday Lates music: Alice Boyd and Rachel Kitchlew div.panel-content > div > div.title > h3.trimmed
Friday, 24 April 2026 a.dl-product-link > div.panel-content > div > div.date
FOR EVERYONE a.dl-product-link > div.panel-content > div > div.audience
MUSIC AND PERFORMANCE a.dl-product-link > div.panel-content > div > div.category
Friday Lates: Stilled shadows: A magic lantern show with Chloe Aridjis div.panel-content > div > div.title > h3.trimmed
Friday, 24 April 2026 a.dl-product-link > div.panel-content > div > div.date
FOR EVERYONE a.dl-product-link > div.panel-content > div > div.audience
TALKS AND CONVERSATIONS a.dl-product-link > div.panel-content > div > div.category
Friday Lates tour and poetry readings: SJ Fowler and guests div.panel-content > div > div.title > h3.trimmed
Friday, 24 April 2026 a.dl-product-link > div.panel-content > div > div.date
FOR FAMILIES - ALL AGES a.dl-product-link > div.panel-content > div > div.audience
WORKSHOP a.dl-product-link > div.panel-content > div > div.category
The Roden Centre for Creative Learning: The Welcome space, our dedicated space … div.panel-content > div > div.title > h3.trimmed
Saturday and Sundays, Bank holidays and school holidays (Westminster Borough) a.dl-product-link > div.panel-content > div > div.date
FOR SCHOOLS & TEACHERS a.dl-product-link > div.panel-content > div > div.audience
COURSES | STUDY DAY a.dl-product-link > div.panel-content > div > div.category
Online Take One Picture CPD: 2025-2026 div.panel-content > div > div.title > h3.trimmed
Various dates from 27 April 2026 a.dl-product-link > div.panel-content > div > div.date
LEARNING div.card > a > div.card-body > p.tags
Courses div.card > a > div.card-body > h3.card-title
Join our global community to discover a world of art div.card > a > div.card-body > p.sub-text

These are opportunities to improve the legibility of your content.

○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
●`<frame>` or `<iframe>` elements have a title
●`<html>` element has a `[lang]` attribute
●`<html>` element has a valid value for its `[lang]` attribute
●Links are distinguishable without relying on color.
●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
●No element has a `[tabindex]` value greater than 0
●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
○`[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
○`<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
○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.
○`<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.
○Identical links have the same purpose.
○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.
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