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Accessibility

· 13 checks — Landmarks, headings, alt text, forms, and link quality rolled into one auditable list.
SCORE
64
GRADE
D
FIX
4
REVIEW
5
PASS
4
INFO
0
Checks
13
4 PASS 5 REVIEW 4 FIX
D
Dark Mode Support
Action
Theme color only
FIX
Theme color only
Info::
Theme-color present but no dark variant
A theme-color is set but no dark-specific variant was found. The browser toolbar may not adapt for dark mode users.
Got: #ffffff
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 ModePartial Dark Mode
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
No navigation patterns
FIX
No navigation patterns
Info::
3 navigation landmark(s) detected
Info::
No breadcrumbs, search, or skip link detected
These navigation aids help users orient themselves and find content efficiently, especially on large sites.
Breadcrumbs
Search
Skip Link
Labeled Navigation 3 <nav> element(s)
Back to Top
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.
B
Landmark Structure
6 landmarks
REVIEW
6 landmarks
Info::
<main> landmark present
Info::
3 <nav> landmark(s) found
Warning::
3 of 3 <nav> elements are unlabeled
Multiple navigations need aria-label to distinguish them for screen readers.
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.
Page Structure — as a screen reader sees it
BANNER header NAV MAIN 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

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

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
404 Page Quality ✓ Custom 404 Page
Status Code HTTP 404 ✓Page Title Logo der Universität Zürich, zur Startseite ✓Custom Styling ✓Navigation ✓Homepage Link ✗Search Form ✗
C
Favicon & Branding
Action
6 icon(s) detected
REVIEW
6 icon(s) detected
Warning::
No favicon.ico at site root
Some older browsers, bookmark tools, and RSS readers look for /favicon.ico. Add one as a fallback.
Info::
HTML icon links detected
Info::
Apple touch icon present
Info::
Multiple icon sizes detected
✗ favicon.ico Missing
✓ PNG Icons Present
✓ Apple Touch Present
✗ SVG Favicon Missing
✓ Manifest Icons Present
✓ Multiple Sizes Present
C
Web Manifest
Action
Valid manifest
REVIEW
Valid manifest
Warning::
No name or short_name
Add a name field to identify the app.
Info::
192x192 icon present
Info::
512x512 icon present
Info::
Display mode: standalone
PWA Install Criteria Not Installable
Name ✗192×192 icon ✓512×512 icon ✓Start URL ✗Display Mode standalone ✓
Display Mode standalone Theme Color #ffffff Background Color #ffffff Icons 2 icon(s)
B
Color Contrast (Screenshot)
20 text elements analyzed, 0 fail WCAG AA
REVIEW

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

20 pass 1 pass AA only
Show all checked elements (20)
ElementRatioRequiredFGBGResult
h1 Willkommen bei der U…21.00:13.0:1
#000000
#FFFFFF
Pass
h2 Quicklinks und Sprac…3.19:13.0:1
#000000
#894E2F
Pass
h2 Hauptnavigation21.00:13.0:1
#000000
#FFFFFF
Pass
h2 Highlights21.00:13.0:1
#000000
#FFFFFF
Pass
h2 Die Zukunft mitgesta…21.00:13.0:1
#000000
#FFFFFF
Pass
h2 Lehre am Puls der Ze…21.00:13.0:1
#000000
#FFFFFF
Pass
h2 Spitzenforschung21.00:13.0:1
#000000
#FFFFFF
Pass
h2 Begeisternde Vielfal…21.00:13.0:1
#000000
#FFFFFF
Pass
h2 Öffentliche Veranst…21.00:13.0:1
#000000
#FFFFFF
Pass
h2 News21.00:13.0:1
#000000
#FFFFFF
Pass
h2 Nationaler Tag gegen…21.00:13.0:1
#000000
#FFFFFF
Pass
h2 Öffentliche Ringvor…21.00:13.0:1
#000000
#FFFFFF
Pass
h2 Ideen für eine gere…21.00:13.0:1
#000000
#FFFFFF
Pass
h2 Agenda21.00:13.0:1
#000000
#FFFFFF
Pass
h2 Planning to Join Us …21.00:13.0:1
#000000
#FFFFFF
Pass
h2 Studium21.00:13.0:1
#000000
#FFFFFF
Pass
h2 Universität21.00:13.0:1
#000000
#FFFFFF
Pass
h2 Get in Touch21.00:13.0:1
#000000
#FFFFFF
Pass
h2 Folgen Sie uns21.00:13.0:1
#000000
#FFFFFF
Pass
h2 Weiterführende Link…21.00:13.0:1
#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.

A+
Heading Hierarchy
28 headings
PASS
28 headings
Info::
Single H1 present
  • H2 Quicklinks und Sprachwechsel
  • H2 Hauptnavigation
  • H1 Willkommen bei der Universität Zürich
  • H2 Highlights
  • H3 Null-Toleranz gegenüber sexueller Belästigung
  • H2 Die Zukunft mitgestalten
  • H2 Lehre am Puls der Zeit
  • H2 Spitzenforschung
  • H2 Begeisternde Vielfalt
  • H2 Öffentliche Veranstaltungen
  • H2 News
  • H3 KI demokratisieren
  • H3 Schmutziges Wasser, weisses Gold
  • H3 Christian Schwarzenegger wird neuer Provost von Universitas 21
  • H3 Gleichstellung mit System
  • H3 Null-Toleranz gegenüber sexueller Belästigung
  • H3 Im Dialog mit der Gesellschaft
  • H3 Gerechte Gesellschaft, gerechte Steuern
  • H2 Nationaler Tag gegen sexuelle Belästigung an Hochschulen
  • H2 Öffentliche Ringvorlesungen
  • H2 Ideen für eine gerechtere Welt
  • H2 Agenda
  • H2 Planning to Join Us from Abroad?
  • H2 Studium
  • H2 Universität
  • H2 Get in Touch
  • H2 Folgen Sie uns
  • H2 Weiterführende Links
A+
Alt Text Quality
All 22 images OK
PASS
All 22 images OK
Info::
18 decorative image(s) correctly marked
Info::
4 image(s) with good alt text
22 images 4 good alt text 18 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+
Lighthouse Accessibility Audits
Score 96/100 — 1 failing, 24 passed
PASS
96

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

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
div.HeroSlideshowSlide--inner > div.HeroSlideshowSlide--media > div.HeroSlideshowSlide--media--inner > a div.HeroSlideshowSlide--inner > div.HeroSlideshowSlide--media > div.HeroSlideshowSlide--media--inner > a
div.BigTeaserWrapper > div.BigTeaser > div.BigTeaser--image > a div.BigTeaserWrapper > div.BigTeaser > div.BigTeaser--image > a
div.BigTeaserWrapper > div.BigTeaser > div.BigTeaser--image > a div.BigTeaserWrapper > div.BigTeaser > div.BigTeaser--image > a
div.BigTeaserWrapper > div.BigTeaser > div.BigTeaser--image > a div.BigTeaserWrapper > div.BigTeaser > div.BigTeaser--image > a
div.BigTeaserWrapper > div.BigTeaser > div.BigTeaser--image > a div.BigTeaserWrapper > div.BigTeaser > div.BigTeaser--image > a
div.BigTeaserWrapper > div.BigTeaser > div.BigTeaser--image > a div.BigTeaserWrapper > div.BigTeaser > div.BigTeaser--image > a
div.BigTeaserWrapper > div.BigTeaser > div.BigTeaser--image > a div.BigTeaserWrapper > div.BigTeaser > div.BigTeaser--image > a
div.BigTeaserWrapper > div.BigTeaser > div.BigTeaser--image > a div.BigTeaserWrapper > div.BigTeaser > div.BigTeaser--image > a
div.BigTeaserWrapper > div.BigTeaser > div.BigTeaser--image > a div.BigTeaserWrapper > div.BigTeaser > div.BigTeaser--image > a
div.BigTeaserWrapper > div.BigTeaser > div.BigTeaser--image > a div.BigTeaserWrapper > div.BigTeaser > div.BigTeaser--image > a

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.

○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
●`[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
●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.
●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
○`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
○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.
○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.
○`[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.
○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.

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