Skip to content
https://interestingengineering.com

Accessibility

· 13 checks — Landmarks, headings, alt text, forms, and link quality rolled into one auditable list.
SCORE
67
GRADE
D
FIX
3
REVIEW
4
PASS
6
INFO
0
Checks
13
6 PASS 4 REVIEW 3 FIX
F
404 Error Page
Action
HTTP 404, bare page
FIX
HTTP 404, bare page
Info::
Correct 404 status code returned
Got: HTTP 404
Warning::
Bare server default 404 page
The 404 page has no custom styling. Users hitting a broken link see a generic error with no way to navigate back. Add a custom 404 page with your site navigation and a search bar.
404 Page Quality Default 404 Page
Status Code HTTP 404 ✓Page Title Interesting Engineering | Page Not Found ✓Custom Styling ✗Navigation ✗Homepage Link ✗Search Form ✗
D
Web Manifest
Action
Valid manifest
FIX
Valid manifest
Info::
Name present: Interesting Engineering
Warning::
No 192x192 icon
A 192px icon is required for PWA installation.
PWA Install Criteria Not Installable
Name Interesting Engineering ✓192×192 icon ✗512×512 icon ✗Start URL / ✓Display Mode browser ✗
Name Interesting Engineering Display Mode browser Theme Color #FFFFFF Background Color #007fc0
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 ✗
B
Favicon & Branding
15 icon(s) detected
REVIEW
15 icon(s) detected
Info::
favicon.ico present at site root
Info::
HTML icon links detected
Info::
Apple touch icon present
Info::
Multiple icon sizes detected
✓ favicon.ico Present
✓ PNG Icons Present
✓ Apple Touch Present
✗ SVG Favicon Missing
✗ Manifest Icons Missing
✓ Multiple Sizes Present
B
Dark Mode Support
Dark mode detected
REVIEW
Dark mode detected
Info::
prefers-color-scheme CSS detected in inline styles
Info::
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.

C
Navigation UX
Action
2 navigation pattern(s)
REVIEW
2 navigation pattern(s)
Info::
Search functionality detected
Got: role-search
Info::
Skip navigation link detected
Info::
8 navigation landmark(s) detected
Info::
Hamburger menu detected (responsive design)
Breadcrumbs
Search role='search' landmark
Skip Link Skip link detected
Labeled Navigation 8 <nav> element(s)
Back to Top
Hamburger Menu
Sticky Navigation Cannot reliably detect (CSS-based)
4 of 6 testable patterns navigation patterns detected. Strong navigation UX with multiple discovery paths.
A
Landmark Structure
27 landmarks
PASS
27 landmarks
Info::
<main> landmark present
Info::
8 <nav> landmark(s) found
Warning::
1 of 8 <nav> elements are unlabeled
Multiple navigations need aria-label to distinguish them for screen readers.
Info::
Skip navigation link present
Info::
Search landmark present
Page Structure — as a screen reader sees it
BANNER header NAV "Primary site navigation" SEARCH MAIN ASIDE CONTENTINFO footer

Multiple navigations need aria-label to distinguish them for screen readers.

Why this matters

Some <nav> elements lack aria-label — screen-reader users hear 'navigation' multiple times with no way to distinguish them.

Learn more ▾

When a page has multiple <nav> regions (primary, footer, breadcrumb), each needs aria-label or aria-labelledby. AT users navigate by landmark; identical 'navigation' announcements force them to enter each one to discover purpose.

Source: WAI-ARIA Authoring Practices

A
Heading Hierarchy
77 headings, 1 skip(s)
PASS
77 headings, 1 skip(s)
Info::
Single H1 present
Warning::
Heading level skipped: H1 → H3 (missing H2)
Skipping heading levels breaks the document outline. Screen readers may interpret missing levels as structural errors.
  • H4 Follow Us On
  • H1 Interesting Engineering
  • H3 LATEST skipped
  • H4 China's 1116 MWe Taipingling Unit 1 reactor goes online, set to generate 9bn kWh yearly
  • H4 ChatGPT Images 2.0 update combines reasoning, research, and design with 2K output
  • H4 US Navy tests plug-and-play laser system on USS Bush carrier, downs drones at sea
  • H4 China's CATL reveals 621-mile EV battery, under-7-minute charging to challenge BYD
  • H4 Tien Kung 3.0 humanoid wins China's Robot Warrior Challenge with zero human control
  • H2 Video: YouTuber's homemade nuclear battery draws power from tritium vials' radiation
  • H2 Video: YouTuber's homemade nuclear battery draws power from tritium vials' radiation
  • H3 Tesla's Optimus humanoid robot greets runners, poses for photos at Boston Marathon
  • H3 Prediction markets and AI the focus of new research project by Pharos Network
  • H3 First-in-human study confirms safety of graphene-based brain interface
  • H3 US uses world's first exascale supercomputer to model supernovae, fusion reactors
  • H3 Tesla's Optimus humanoid robot greets runners, poses for photos at Boston Marathon
  • H3 Prediction markets and AI the focus of new research project by Pharos Network
  • H4 How spinning sails are cutting fuel use in modern shipping
  • H4 No racetrack glory for China’s AI robots against the data challenge
  • H4 NASA is right to focus on 'hardware rich' approach following Artemis II heat shield gamble
  • H4 The RV is becoming an energy platform. These companies are building it that way
  • H4 The optical engineering behind Star Catcher's 1.1 kW test
  • H3 POPULAR
  • H4 New 3D-printed tech uses metal wires instead of gases for sustainable cooling
  • H4 New Northrop F/A-XX video gives clearest look yet at US Navy's 6th-gen fighter
  • H4 Kairos breaks ground for first 4th-gen nuclear reactor in US to power Google data centers
  • H4 Video: YouTuber's homemade nuclear battery draws power from tritium vials' radiation
  • H4 Airbus' upgraded A400M mothership can launch 50 strike drones or 12 cruise missiles
  • H4 Autonomous Alfie: New humanoid robot for complex industrial tasks unveiled
  • H4 US Navy to test low-cost hypersonic boost-glide missiles for existing fleet ships
  • H4 New theory shows time exists in quantum superpositions, ticks fast and slow
  • H4 South Korea's gas battery turns greenhouse gases into electricity during capture
  • H4 Russia gets new supersonic SU-35S jets for striking targets in 2,200-mile-range
  • H4 New 3D-printed tech uses metal wires instead of gases for sustainable cooling
  • H4 New Northrop F/A-XX video gives clearest look yet at US Navy's 6th-gen fighter
  • H4 Kairos breaks ground for first 4th-gen nuclear reactor in US to power Google data centers
  • H4 Video: YouTuber's homemade nuclear battery draws power from tritium vials' radiation
  • H4 Airbus' upgraded A400M mothership can launch 50 strike drones or 12 cruise missiles
  • H4 Autonomous Alfie: New humanoid robot for complex industrial tasks unveiled
  • H4 US Navy to test low-cost hypersonic boost-glide missiles for existing fleet ships
  • H4 New theory shows time exists in quantum superpositions, ticks fast and slow
  • H4 South Korea's gas battery turns greenhouse gases into electricity during capture
  • H4 Russia gets new supersonic SU-35S jets for striking targets in 2,200-mile-range
  • H4 New 3D-printed tech uses metal wires instead of gases for sustainable cooling
  • H4 New Northrop F/A-XX video gives clearest look yet at US Navy's 6th-gen fighter
  • H4 Kairos breaks ground for first 4th-gen nuclear reactor in US to power Google data centers
  • H4 Video: YouTuber's homemade nuclear battery draws power from tritium vials' radiation
  • H4 Airbus' upgraded A400M mothership can launch 50 strike drones or 12 cruise missiles
  • H4 Autonomous Alfie: New humanoid robot for complex industrial tasks unveiled
  • H4 US Navy to test low-cost hypersonic boost-glide missiles for existing fleet ships
  • H4 New theory shows time exists in quantum superpositions, ticks fast and slow
  • H4 South Korea's gas battery turns greenhouse gases into electricity during capture
  • H4 Russia gets new supersonic SU-35S jets for striking targets in 2,200-mile-range
  • H3 Columns
  • H3 CASE STUDIES
  • H3 CASE STUDIES
  • H3 INTERVIEWS
  • H4 University of Michigan's Zack Spica says fiber optic cables can become earthquake sensors
  • H4 DARPA veteran Paul Eremenko on AI engineers, aerospace bottlenecks, and building starships
  • H4 IEEE's Tom Coughlin on why storage will decide AI's future
  • H4 Materials scientist Leonard Siebert on 3D printing for medicine
  • H4 OnePlanet CEO André Pujadas on building solar recycling infrastructure in the US
  • H4 University of Michigan's Zack Spica says fiber optic cables can become earthquake sensors
  • H4 DARPA veteran Paul Eremenko on AI engineers, aerospace bottlenecks, and building starships
  • H4 IEEE's Tom Coughlin on why storage will decide AI's future
  • H4 Materials scientist Leonard Siebert on 3D printing for medicine
  • H4 OnePlanet CEO André Pujadas on building solar recycling infrastructure in the US
  • H3 ENGINEERS DIRECTORY
  • H3 PHOTO-STORIES
  • H3 VIDEOS
  • H3 Innovation
  • H3 Culture
  • H3 Military
  • H3 Energy
  • H3 Space
  • H3 INNOVATION
  • H3 ENTERTAINMENT
  • H3 GUIDES

Skipping heading levels breaks the document outline. Screen readers may interpret missing levels as structural errors.

Why this matters

Skipping heading levels breaks the document outline — screen-reader users lose track of section nesting.

Learn more ▾

Screen reader users navigate by jumping between headings (H1 → H2 → H3). Skipping (H1 → H3) breaks the sense of hierarchy. Use sequential levels even if you don't like the default styling — restyle with CSS instead. WCAG 1.3.1 (Info and Relationships) treats this as an A failure.

Source: WCAG 2.1 SC 1.3.1 / W3C WAI

A
Alt Text Quality
2 of 222 images have issues
PASS
2 of 222 images have issues
Warning::
2 image(s) with generic alt text
Info::
3 decorative image(s) correctly marked
Info::
217 image(s) with good alt text
222 images 217 good alt text 3 decorative 2 generic
IssueCount
generic2 image(s)
A
Form Accessibility
1 of 5 controls have issues
PASS
1 of 5 controls have issues
Critical::
1 control(s) without accessible label
Form controls need a <label>, aria-label, or aria-labelledby for screen readers.
Got: <input type="checkbox" id="checkbox">
Info::
4 control(s) properly labeled
5 controls
4 labeled
0 placeholder only
1 unlabeled
ControlTypeLabelMethod
#desktop-search-inputtextSearchfor/id
#mobile-search-inputtextSearchfor/id
#home-newsletter-emailemailEmail address for newsletter subscriptionaria-label
#navigation-search-inputtextSearchfor/id
#checkboxcheckbox(none)none

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

<input type="checkbox" id="checkbox">

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

A+
Color Contrast (Screenshot)
20 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.

20 pass
Show all checked elements (20)
ElementRatioRequiredFGBGResult
h1 Interesting Engineer…17.62:13.0:1
#000000
#EBEBEB
Pass
h2 Video: YouTuber's ho…17.62:13.0:1
#000000
#EBEBEB
Pass
h2 Video: YouTuber's ho…17.62:13.0:1
#000000
#EBEBEB
Pass
h3 LATEST17.62:13.0:1
#000000
#EBEBEB
Pass
h3 Tesla's Optimus huma…17.62:13.0:1
#000000
#EBEBEB
Pass
h3 Prediction markets a…17.62:13.0:1
#000000
#EBEBEB
Pass
h3 First-in-human study…17.62:13.0:1
#000000
#EBEBEB
Pass
h3 US uses world's firs…17.62:13.0:1
#000000
#EBEBEB
Pass
h3 Tesla's Optimus huma…17.62:13.0:1
#000000
#EBEBEB
Pass
h3 Prediction markets a…17.62:13.0:1
#000000
#EBEBEB
Pass
h3 POPULAR17.62:13.0:1
#000000
#EBEBEB
Pass
h3 Columns17.62:13.0:1
#000000
#EBEBEB
Pass
h3 CASE STUDIES17.62:13.0:1
#000000
#EBEBEB
Pass
h3 CASE STUDIES17.62:13.0:1
#000000
#EBEBEB
Pass
h3 INTERVIEWS17.62:13.0:1
#000000
#EBEBEB
Pass
h3 ENGINEERS DIRECTORY17.62:13.0:1
#000000
#EBEBEB
Pass
h3 PHOTO-STORIES17.62:13.0:1
#000000
#EBEBEB
Pass
h3 VIDEOS17.62:13.0:1
#000000
#EBEBEB
Pass
h3 Innovation17.62:13.0:1
#000000
#EBEBEB
Pass
h3 Culture17.62:13.0:1
#000000
#EBEBEB
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.

A+
Lighthouse Accessibility Audits
Score 95/100 — 2 failing, 27 passed
PASS
95

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
Manage Your Privacy div#cmpboxcontent > div.cmpboxtxtdiv > h1#cmpboxheadline1 > span
Accept All div.cmpboxbtns > span#cmpwelcomebtnyes > a.cmpboxbtn > span#cmpbntyestxt
Sign In nav.jsx-4f789dc61c7ce265 > div.jsx-4f789dc61c7ce265 > div.jsx-4f789dc61c7ce265 > a.jsx-4f789dc61c7ce265
Energy div.t-flex > div.t-flex-1 > div.t-flex > a.t-text-[#027FC0]
AI and Robotics div.t-flex > div.t-flex-1 > div.t-flex > a.t-text-[#027FC0]
Military div.t-flex > div.t-flex-1 > div.t-flex > a.t-text-[#027FC0]
Energy div.t-flex > div.t-flex-1 > div.t-flex > a.t-text-[#027FC0]
Science div.t-flex > div.t-flex-1 > div.t-flex > a.t-text-[#027FC0]
Energy div.t-flex > div.md:t-hidden > div.t-flex > a.t-text-[#027FC0]
AI and Robotics div#hero-slide-0 > div.t-pt-[12px] > div.t-flex > a.t-text-[#027FC0]
AI and Robotics div#hero-slide-1 > div.t-pt-[12px] > div.t-flex > a.t-text-[#027FC0]
Case Studies div.t-flex-1 > div.category-links > div.t-flex > a.t-text-[#027FC0]
and div.t-flex-1 > div.category-links > div.t-flex > span.t-font-normal
Energy div.t-flex-1 > div.category-links > div.t-flex > a.t-text-[#027FC0]
Inside China div.t-flex-1 > div.category-links > div.t-flex > a.t-text-[#027FC0]
Beyond Earth div.t-flex-1 > div.category-links > div.t-flex > a.t-text-[#027FC0]
and div.t-flex-1 > div.category-links > div.t-flex > span.t-font-normal
Space div.t-flex-1 > div.category-links > div.t-flex > a.t-text-[#027FC0]
Transportation div.t-flex-1 > div.category-links > div.t-flex > a.t-text-[#027FC0]
Case Studies div.t-flex-1 > div.category-links > div.t-flex > a.t-text-[#027FC0]
and div.t-flex-1 > div.category-links > div.t-flex > span.t-font-normal
Space div.t-flex-1 > div.category-links > div.t-flex > a.t-text-[#027FC0]
Innovation div.t-pt-[12px] > div > div.t-flex > a.t-text-[#027FC0]
Military div.t-pt-[12px] > div > div.t-flex > a.t-text-[#027FC0]
Inside China div.t-flex-1 > div > div.t-flex > span.t-text-[#027FC0]
Beyond Earth div.t-flex-1 > div > div.t-flex > span.t-text-[#027FC0]
and div.t-flex-1 > div > div.t-flex > span.t-font-normal
Space div.t-flex-1 > div > div.t-flex > span.t-text-[#027FC0]
AI Logs div.t-flex-1 > div > div.t-flex > span.t-text-[#027FC0]
and div.t-flex-1 > div > div.t-flex > span.t-font-normal
AI and Robotics div.t-flex-1 > div > div.t-flex > span.t-text-[#027FC0]
Inside China div.t-flex-1 > div > div.t-flex > span.t-text-[#027FC0]
and div.t-flex-1 > div > div.t-flex > span.t-font-normal
Transportation div.t-flex-1 > div > div.t-flex > span.t-text-[#027FC0]
Beyond Earth div.t-flex-1 > div > div.t-flex > span.t-text-[#027FC0]
and div.t-flex-1 > div > div.t-flex > span.t-font-normal
Space div.t-flex-1 > div > div.t-flex > span.t-text-[#027FC0]
Research div.t-flex > div.t-flex-1 > div.t-flex > a.t-text-[#027FC0]
Case Studies div.t-flex-1 > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]
and div.t-flex-1 > div.t-inline-flex > div.t-flex > span.t-font-normal
Energy div.t-flex-1 > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]
Case Studies div.t-flex-1 > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]
and div.t-flex-1 > div.t-inline-flex > div.t-flex > span.t-font-normal
Space div.t-flex-1 > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]
Case Studies div.t-flex-1 > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]
Case Studies div.t-flex-1 > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]
Case Studies div.t-flex-1 > div.t-inline-flex > div.t-flex > a.t-text-[#027FC0]
Interviews a.t-group > div.t-mt-3 > div.t-flex > span.t-text-[#027FC0]
and a.t-group > div.t-mt-3 > div.t-flex > span.t-font-normal
Science a.t-group > div.t-mt-3 > div.t-flex > span.t-text-[#027FC0]
Interviews a.t-group > div.t-mt-3 > div.t-flex > span.t-text-[#027FC0]
and a.t-group > div.t-mt-3 > div.t-flex > span.t-font-normal
Inventor div.t-w-44 > div.t-self-stretch > div.t-inline-flex > div.t-justify-start
Engineer div.t-w-44 > div.t-self-stretch > div.t-inline-flex > div.t-justify-start
Innovation div.md:t-hidden > div.t-mt-3 > div.t-flex > a.t-text-[#027FC0]
Innovation div.t-flex > div.t-flex-1 > div.t-flex > a.t-text-[#027FC0]
Innovation div.t-flex > div.t-flex-1 > div.t-flex > a.t-text-[#027FC0]
Innovation div.t-flex > div.t-flex-1 > div.t-flex > a.t-text-[#027FC0]
and div.t-flex > div.t-flex-1 > div.t-flex > span.t-font-normal
Science div.t-flex > div.t-flex-1 > div.t-flex > a.t-text-[#027FC0]
Innovation div.t-flex > div.t-flex-1 > div.t-flex > a.t-text-[#027FC0]
and div.t-flex > div.t-flex-1 > div.t-flex > span.t-font-normal
Science div.t-flex > div.t-flex-1 > div.t-flex > a.t-text-[#027FC0]
Sign up for free div.t-w-full > div.t-w-full > div.t-w-full > button.t-w-full
Gaming div.md:t-hidden > div.t-mt-3 > div.t-flex > a.t-text-[#027FC0]
and div.md:t-hidden > div.t-mt-3 > div.t-flex > span.t-font-normal
Culture div.md:t-hidden > div.t-mt-3 > div.t-flex > a.t-text-[#027FC0]
Culture div.t-flex > div.t-flex-1 > div.t-flex > a.t-text-[#027FC0]
Culture div.t-flex > div.t-flex-1 > div.t-flex > a.t-text-[#027FC0]
Culture div.t-flex > div.t-flex-1 > div.t-flex > a.t-text-[#027FC0]
and div.t-flex > div.t-flex-1 > div.t-flex > span.t-font-normal
AI and Robotics div.t-flex > div.t-flex-1 > div.t-flex > a.t-text-[#027FC0]
Culture div.t-flex > div.t-flex-1 > div.t-flex > a.t-text-[#027FC0]
Military div.md:t-hidden > div.t-mt-3 > div.t-flex > a.t-text-[#027FC0]
Military div.t-flex > div.t-flex-1 > div.t-flex > a.t-text-[#027FC0]
Military div.t-flex > div.t-flex-1 > div.t-flex > a.t-text-[#027FC0]
Military div.t-flex > div.t-flex-1 > div.t-flex > a.t-text-[#027FC0]
Military div.t-flex > div.t-flex-1 > div.t-flex > a.t-text-[#027FC0]
Energy div.md:t-hidden > div.t-mt-3 > div.t-flex > a.t-text-[#027FC0]
Energy div.t-flex > div.t-flex-1 > div.t-flex > a.t-text-[#027FC0]
Energy div.t-flex > div.t-flex-1 > div.t-flex > a.t-text-[#027FC0]
Energy div.t-flex > div.t-flex-1 > div.t-flex > a.t-text-[#027FC0]
Energy div.t-flex > div.t-flex-1 > div.t-flex > a.t-text-[#027FC0]
Space div.md:t-hidden > div.t-mt-3 > div.t-flex > a.t-text-[#027FC0]
Space div.t-flex > div.t-flex-1 > div.t-flex > a.t-text-[#027FC0]
Space div.t-flex > div.t-flex-1 > div.t-flex > a.t-text-[#027FC0]
Space div.t-flex > div.t-flex-1 > div.t-flex > a.t-text-[#027FC0]
Space div.t-flex > div.t-flex-1 > div.t-flex > a.t-text-[#027FC0]
and div.t-flex > div.t-flex-1 > div.t-flex > span.t-font-normal
Science div.t-flex > div.t-flex-1 > div.t-flex > a.t-text-[#027FC0]
IE Awards div.t-flex > div.md:t-hidden > div.t-flex > span.t-text-[#6C757D]
Update Privacy Preferences body.min-h-screen > div.adthrive-comscore > div.adthrive-privacy-preferences > a

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
LATEST div.t-grid > aside.t-order-7 > div.t-flex > h3.home-heading

These are opportunities to improve keyboard navigation in your application.

○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.
●`button`, `link`, and `menuitem` elements have accessible names
●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
●Links are distinguishable without relying on color.
●Links have a discernible name
●No element has a `[tabindex]` value greater than 0
●Touch targets have sufficient size and spacing.
●`[lang]` attributes have a valid value
●Document has a main landmark.
●Deprecated ARIA roles were not used
●Image elements do not have `[alt]` attributes that are redundant text.
●Identical links have the same purpose.
○`[accesskey]` values are unique
○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
○Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
○List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements
○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
○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.

Send Feedback