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Accessibility

· 13 checks — Landmarks, headings, alt text, forms, and link quality rolled into one auditable list.
SCORE
63
GRADE
D
FIX
5
REVIEW
4
PASS
4
INFO
0
Checks
13
4 PASS 4 REVIEW 5 FIX
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::
Skip navigation link detected
Info::
Hamburger menu detected (responsive design)
Breadcrumbs
Search
Skip Link Skip link detected
Labeled Navigation
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.
B
Heading Hierarchy
39 headings
REVIEW
39 headings
Critical::
No H1 heading found
Every page should have one H1 that describes the page content.
  • H2 Just Published
  • H3 Global Cancer Observatory
  • H3 The IARC Monographs Programme
  • H2 News
  • H3 IARC, UNESCO, and BBMRI-ERIC open call for applications to new Workshop Series on biobanking
  • H3 JNCI Monographs publishes special issue focused on IARC@60 anniversary
  • H3 IARC Evidence Summary Brief No. 6 now available in French
  • H3 IARC participates in World Health Day events
  • H2 Press Releases
  • H3 New study explores individual and contextual determinants of behaviour change for cancer prevention in the European UnionA qualitative study to inform adoption of the European Code Against Cancer
  • H3 IARC Working Group Report on Helicobacter pylori screen-and-treat strategies for gastric cancer prevention
  • H3 Global platform on childhood cancer survival highlights striking disparities
  • H3 Four in ten cancer cases could be prevented globally
  • H2 Newsletter and Highlights
  • H3 IARC NEWSLETTER
  • H3 World Health 2026 - IARC and WHO stand with science for World Health Day
  • H3 IARC Monographs evaluation of the carcinogenicity of tris(chloropropyl) phosphate, butyraldehyde, and cumyl hydroperoxide
  • H3 International Childhood Cancer Day 2026 - Global platform on childhood cancer survival highlights striking disparities
  • H2 Publications
  • H3 Publications website
  • H2 Posters, Infographics, and Videos
  • H3 Human Cancer: Known Causes and Prevention by Organ Site
  • H3 Infographics
  • H3 Videos
  • H3 IARC: a new era in cancer research
  • H2 Research and Capacity-Building
  • H3 IARC Research
  • H4 IARC Research Project websites
  • H4 Learning and Capacity-Building website
  • H3 IARC Learning portal
  • H2 Research Branches
  • H2 Governance and Leadership
  • H3 IARC Director
  • H3 IARC Medium-Term Strategy for 2021-2025
  • H3 IARC Governance
  • H3 IARC Ethics Committee
  • H2 Policies
  • H3 IARC Data Protection Policy
  • H2 Follow us

Every page should have one H1 that describes the page content.

Why this matters

No H1 means screen-reader users can't identify the page's primary topic, and Google's content-extraction degrades.

Learn more

The H1 is the document title for assistive tech and a strong signal to search engines about page topic. Pages without one force screen readers to fall back to the <title> attribute or page chrome. Add a single H1 that names the page's primary subject.

Source: WCAG 2.4.6 / Google Search Central

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 – IARC Custom Styling Navigation Homepage Link Search Form
B
Favicon & Branding
4 icon(s) detected
REVIEW
4 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
C
Lighthouse Accessibility Audits
Action
Score 75/100 — 7 failing, 22 passed
REVIEW
75

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.

Names and labels

When a button doesn't have an accessible name, screen readers announce it as "button", making it unusable for users who rely on screen readers. Learn how to make buttons more accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
main#main > div#banner > ol.carousel-indicators > button#play-button main#main > div#banner > ol.carousel-indicators > button#play-button
div.row > div.carousel-rect > div#carousel-manual69e92d811d434 > button#play-card-carousel-button div.row > div.carousel-rect > div#carousel-manual69e92d811d434 > button#play-card-carousel-button

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
main#main > div#banner > div.carousel-inner > a.clickable-card-link main#main > div#banner > div.carousel-inner > a.clickable-card-link
div#carousel-manual69e92d811d434 > div.carousel-inner > div.carousel-item > a.clickable-card-link div#carousel-manual69e92d811d434 > div.carousel-inner > div.carousel-item > a.clickable-card-link

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.

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
Privacy policy div.custom-layout-row > div.custom-layout > span#cookieconsent:desc > a.cc-link
CONTINUE div.custom-layout-row > div.custom-layout > div.cc-compliance > a.cc-btn

These are opportunities to improve the legibility of your content.

Tables and lists

Screen readers have a specific way of announcing lists. Ensuring proper list structure aids screen reader output. Learn more about proper list structure.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
1 2 3 4 body.home > main#main > div#banner > ol.carousel-indicators
21 Apr 2026 Premenopausal and postmenopausal obesity and endometrial cancer ris… div.row > div.just-published > div.just-published-content > ul.articles-list

Screen readers require list items (`<li>`) to be contained within a parent `<ul>`, `<ol>` or `<menu>` to be announced properly. Learn more about proper list structure.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
21 Apr 2026 Premenopausal and postmenopausal obesity and endometrial cancer ris… ul.articles-list > div#mCSB_2 > div#mCSB_2_container > li.article
21 Apr 2026 Risk of Head and Neck Cancer in Former Smokers by Subsite: A Multic… ul.articles-list > div#mCSB_2 > div#mCSB_2_container > li.article
21 Apr 2026 World Health Organization classification of tumours of the breast 6… ul.articles-list > div#mCSB_2 > div#mCSB_2_container > li.article
17 Apr 2026 Occupational exposure to chlorinated solvents and lung cancer: resu… ul.articles-list > div#mCSB_2 > div#mCSB_2_container > li.article
16 Apr 2026 Accelerating discovery of cancer causes for prevention in the era o… ul.articles-list > div#mCSB_2 > div#mCSB_2_container > li.article
16 Apr 2026 Systematic review and meta-analysis of cervico-vaginal high-risk hu… ul.articles-list > div#mCSB_2 > div#mCSB_2_container > li.article
16 Apr 2026 Genetic predisposition to high BMI, ultra-processed food consumptio… ul.articles-list > div#mCSB_2 > div#mCSB_2_container > li.article
15 Apr 2026 Understanding age and sex differentials in cancer incidence and mor… ul.articles-list > div#mCSB_2 > div#mCSB_2_container > li.article
15 Apr 2026 Human papillomavirus infection and vaccination among young females … ul.articles-list > div#mCSB_2 > div#mCSB_2_container > li.article
10 Apr 2026 Author's Response to the Commentary by Raitoharju E et al. on "Epig… ul.articles-list > div#mCSB_2 > div#mCSB_2_container > li.article

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Best practices

Disabling zooming is problematic for users with low vision who rely on screen magnification to properly see the contents of a web page. Learn more about the viewport meta tag.

Why this matters

Informational: a Permissions-Policy directive showing feature -> allowed origins.

Source: MDN Permissions-Policy

Failing Elements
head > meta head > meta

These items highlight common accessibility best practices.

Visible text labels that do not match the accessible name can result in a confusing experience for screen reader users. Learn more about accessible names.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Privacy policy div.custom-layout-row > div.custom-layout > span#cookieconsent:desc > a.cc-link
CONTINUE div.custom-layout-row > div.custom-layout > div.cc-compliance > a.cc-btn
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
Image elements have `[alt]` attributes
`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
No element has a `[tabindex]` value greater than 0
Touch targets have sufficient size and spacing.
Heading elements appear in a sequentially-descending order
Document has a main landmark.
Deprecated ARIA roles were not used
ARIA IDs are unique
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
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.
Uses ARIA roles only on compatible elements
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
Landmark Structure
3 landmarks
PASS
3 landmarks
Info::
<main> landmark present
Warning::
No <nav> landmark found
Info::
Skip navigation link present
Page Structure — as a screen reader sees it
BANNER header MAIN CONTENTINFO footer
A+
Alt Text Quality
All 72 images OK
PASS
All 72 images OK
Info::
45 decorative image(s) correctly marked
Info::
27 image(s) with good alt text
72 images 27 good alt text 45 decorative
All images have appropriate alt text.
A+
Form Accessibility
No form controls
PASS
No form controls
Info::
No form controls on this page
No form controls found.
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
h2 Just Published5.17:13.0:1
#000000
#2985BB
Pass
h2 News5.17:13.0:1
#000000
#2985BB
Pass
h2 Press Releases5.17:13.0:1
#000000
#2985BB
Pass
h2 Newsletter and Highl…5.17:13.0:1
#000000
#2985BB
Pass
h2 Publications5.17:13.0:1
#000000
#2985BB
Pass
h2 Posters, Infographic…5.17:13.0:1
#000000
#2985BB
Pass
h2 Research and Capacit…5.17:13.0:1
#000000
#2985BB
Pass
h2 Research Branches5.17:13.0:1
#000000
#2985BB
Pass
h2 Governance and Leade…5.17:13.0:1
#000000
#2985BB
Pass
h2 Policies5.17:13.0:1
#000000
#2985BB
Pass
h2 Follow us5.17:13.0:1
#000000
#2985BB
Pass
h3 Global Cancer Observ…5.17:13.0:1
#000000
#2985BB
Pass
h3 The5.17:13.0:1
#000000
#2985BB
Pass
h3 Programme5.17:13.0:1
#000000
#2985BB
Pass
h3 IARC, UNESCO, and BB…5.17:13.0:1
#000000
#2985BB
Pass
h3 publishes special is…5.17:13.0:1
#000000
#2985BB
Pass
h3 IARC Evidence Summar…5.17:13.0:1
#000000
#2985BB
Pass
h3 IARC participates in…5.17:13.0:1
#000000
#2985BB
Pass
h3 New study explores i…5.17:13.0:1
#000000
#2985BB
Pass
h3 A qualitative study …5.17:13.0:1
#000000
#2985BB
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.

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