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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
6
REVIEW
1
PASS
6
INFO
0
Checks
13
6 PASS 1 REVIEW 6 FIX
F
Favicon & Branding
Action
1 icon(s) detected
FIX
1 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::
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 Missing
✓ 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
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
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 Die Seite wurde nicht gefunden | Umweltbundesamt ✓Custom Styling ✓Navigation ✓Homepage Link ✓Search Form ✗
A
Landmark Structure
14 landmarks
PASS
14 landmarks
Info::
<main> landmark present
Info::
3 <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.
Page Structure — as a screen reader sees it
BANNER header NAV "Main DE" 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
119 headings
PASS
119 headings
Info::
Single H1 present
  • H1 Startseite
  • H2 Aktuelles
  • H3 UBA veröffentlicht 100. Umwelttipp für einen nachhaltigen Alltag
  • H3 Tempolimit
  • H3 Kampf gegen Leerstand: Belebt nachhaltiger Konsum Innenstädte?
  • H3 Wie Klimawirkungsketten helfen, Klimarisiken zu verstehen
  • H3 Green Budgeting: Öffentliche Mittel mit Wirkung lenken
  • H3 Digitalisierung und Klimaschutz: Herausforderung oder Chance?
  • H2 Folgen Sie uns
  • H2 Termine
  • H3 Green Cooling Summit 2026
  • H3 AGEE-Stat-Fachtagung: Erneuerbare Energien in der Industrie
  • H3 Filmvorführung und Gespräch: Michael Succow – Wie geht Natur?!
  • H3 Vortrag: Klimapolitik sozial gerecht gestalten – aber wie?
  • H3 2. Deutsch-Österreichisches EMW-Online-Seminar zur EMW 2026
  • H3 Green Cooling Summit 2026
  • H3 AGEE-Stat-Fachtagung: Erneuerbare Energien in der Industrie
  • H3 Filmvorführung und Gespräch: Michael Succow – Wie geht Natur?!
  • H3 Vortrag: Klimapolitik sozial gerecht gestalten – aber wie?
  • H3 2. Deutsch-Österreichisches EMW-Online-Seminar zur EMW 2026
  • H3 Green Cooling Summit 2026
  • H3 AGEE-Stat-Fachtagung: Erneuerbare Energien in der Industrie
  • H2 Informationen für …
  • H3 Behörden
  • H3 Bildung
  • H3 Kinder & Jugendliche
  • H3 Verbraucher*innen
  • H3 Wissenschaft
  • H3 Unternehmen
  • H3 Behörden
  • H3 Bildung
  • H3 Kinder & Jugendliche
  • H3 Verbraucher*innen
  • H3 Wissenschaft
  • H3 Unternehmen
  • H3 Behörden
  • H3 Bildung
  • H3 Kinder & Jugendliche
  • H2 Videos
  • H2 Umwelttipps für den Alltag
  • H3 Haushalt & Wohnen
  • H3 Heizen & Bauen
  • H3 Übergreifende Tipps
  • H3 Essen & Trinken
  • H3 Elektrogeräte
  • H3 Mobilität & Reisen
  • H3 Garten
  • H3 Haushalt & Wohnen
  • H3 Heizen & Bauen
  • H3 Übergreifende Tipps
  • H3 Essen & Trinken
  • H3 Elektrogeräte
  • H3 Mobilität & Reisen
  • H3 Garten
  • H3 Haushalt & Wohnen
  • H3 Heizen & Bauen
  • H3 Übergreifende Tipps
  • H2 Themen
  • H3 Verkehr
  • H3 Lärm
  • H3 Klima | Energie
  • H3 Gesundheit
  • H3 Chemikalien
  • H3 Abfall | Ressourcen
  • H3 Luft
  • H3 Wasser
  • H3 Nachhaltigkeit | Strategien | Internationales
  • H3 Wirtschaft | Konsum
  • H3 Digitalisierung
  • H3 Boden | Fläche
  • H3 Landwirtschaft
  • H3 Verkehr
  • H3 Lärm
  • H3 Klima | Energie
  • H3 Gesundheit
  • H3 Chemikalien
  • H3 Abfall | Ressourcen
  • H3 Luft
  • H3 Wasser
  • H3 Nachhaltigkeit | Strategien | Internationales
  • H3 Wirtschaft | Konsum
  • H3 Digitalisierung
  • H3 Boden | Fläche
  • H3 Landwirtschaft
  • H3 Verkehr
  • H3 Lärm
  • H2 Publikationen
  • H3 Bund-Länder-Dialog Fläche – Fazit
  • H3 Evaluation des Umweltinnovationsprogramms
  • H3 Fachliche Ableitung von Prüfwerten für per- und polyfluorierte Alkylsubstanzen (PFAS) für den Wirkungspfad Boden-Mensch
  • H3 Postkarten zum nachhaltigen Konsum
  • H3 Konzeptentwicklung für regelmäßige, gebündelte Abfalluntersuchungen zum Monitoring ausgewählter Abfallströme
  • H3 Klimasensitive Waldmodellierung
  • H3 Klimaschutz im Verkehr: Nationale Ziele im Kontext europäischer Vorgaben und Roadmap für das Erreichen der Treibhausgasneutralität unter Berücksichtigung der Schiene und des ÖPNV
  • H3 Technical documentation of the risk-based UBA Air Quality Index
  • H3 Technische Dokumentation des risikobasierten UBA Luftqualitätsindex
  • H3 Scrubber on Ships – Impact on the marine environment
  • H3 Bund-Länder-Dialog Fläche – Fazit
  • H3 Evaluation des Umweltinnovationsprogramms
  • H3 Fachliche Ableitung von Prüfwerten für per- und polyfluorierte Alkylsubstanzen (PFAS) für den Wirkungspfad Boden-Mensch
  • H3 Postkarten zum nachhaltigen Konsum
  • H3 Konzeptentwicklung für regelmäßige, gebündelte Abfalluntersuchungen zum Monitoring ausgewählter Abfallströme
  • H3 Klimasensitive Waldmodellierung
  • H3 Klimaschutz im Verkehr: Nationale Ziele im Kontext europäischer Vorgaben und Roadmap für das Erreichen der Treibhausgasneutralität unter Berücksichtigung der Schiene und des ÖPNV
  • H3 Technical documentation of the risk-based UBA Air Quality Index
  • H3 Technische Dokumentation des risikobasierten UBA Luftqualitätsindex
  • H3 Scrubber on Ships – Impact on the marine environment
  • H3 Bund-Länder-Dialog Fläche – Fazit
  • H3 Evaluation des Umweltinnovationsprogramms
  • H3 Fachliche Ableitung von Prüfwerten für per- und polyfluorierte Alkylsubstanzen (PFAS) für den Wirkungspfad Boden-Mensch
  • H2 Fragen ans UBA
  • H3 Was kann man durch freiwilligen nachhaltigen Konsum überhaupt erreichen? Brauchen wir dafür nicht eher politische Regelungen?
  • H3 Häufig gestellte Fragen (FAQ) zu Antragsstellung und Vollzug der Anrechnung von Strom aus Elektrofahrzeugen auf die Treibhausgasminderungsquote, kurz THG-Quote, nach der 38. BImSchV
  • H3 Wohin mit kaputten Lampen?
  • H3 Was kann man durch freiwilligen nachhaltigen Konsum überhaupt erreichen? Brauchen wir dafür nicht eher politische Regelungen?
  • H3 Häufig gestellte Fragen (FAQ) zu Antragsstellung und Vollzug der Anrechnung von Strom aus Elektrofahrzeugen auf die Treibhausgasminderungsquote, kurz THG-Quote, nach der 38. BImSchV
  • H3 Wohin mit kaputten Lampen?
  • H3 Was kann man durch freiwilligen nachhaltigen Konsum überhaupt erreichen? Brauchen wir dafür nicht eher politische Regelungen?
  • H3 Häufig gestellte Fragen (FAQ) zu Antragsstellung und Vollzug der Anrechnung von Strom aus Elektrofahrzeugen auf die Treibhausgasminderungsquote, kurz THG-Quote, nach der 38. BImSchV
A+
Alt Text Quality
All 102 images OK
PASS
All 102 images OK
Info::
1 image(s) with alt text over 125 characters
Info::
85 decorative image(s) correctly marked
Info::
16 image(s) with good alt text
102 images 16 good alt text 85 decorative
IssueCount
too long1 image(s)
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 Aktuelles21.00:13.0:1
#000000
#FFFFFF
Pass
h2 Folgen Sie uns21.00:13.0:1
#000000
#FFFFFF
Pass
h2 Termine21.00:13.0:1
#000000
#FFFFFF
Pass
h2 Informationen für …21.00:13.0:1
#000000
#FFFFFF
Pass
h2 Videos21.00:13.0:1
#000000
#FFFFFF
Pass
h2 Umwelttipps für den…21.00:13.0:1
#000000
#FFFFFF
Pass
h2 Themen21.00:13.0:1
#000000
#FFFFFF
Pass
h2 Publikationen21.00:13.0:1
#000000
#FFFFFF
Pass
h2 Fragen ans UBA21.00:13.0:1
#000000
#FFFFFF
Pass
h3 Behörden21.00:13.0:1
#000000
#FFFFFF
Pass
h3 Bildung21.00:13.0:1
#000000
#FFFFFF
Pass
h3 Kinder & Jugendliche21.00:13.0:1
#000000
#FFFFFF
Pass
h3 Verbraucher*innen21.00:13.0:1
#000000
#FFFFFF
Pass
h3 Wissenschaft21.00:13.0:1
#000000
#FFFFFF
Pass
h3 Unternehmen21.00:13.0:1
#000000
#FFFFFF
Pass
h3 Behörden21.00:13.0:1
#000000
#FFFFFF
Pass
h3 Bildung21.00:13.0:1
#000000
#FFFFFF
Pass
h3 Kinder & Jugendliche21.00:13.0:1
#000000
#FFFFFF
Pass
h3 Verbraucher*innen21.00:13.0:1
#000000
#FFFFFF
Pass
h3 Wissenschaft21.00:13.0:1
#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+
Lighthouse Accessibility Audits
Score 96/100 — 1 failing, 26 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.

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
Folgen Sie uns article.node > div > section.paragraph > h2.tw-container
22. APR. a.tw-inline-block > article.hover:tw-shadow-lg > div.tw-w-24 > div
Fragen ans UBA article.node > div > section.paragraph > h2.tw-container

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
●`[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 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.
●Heading elements appear in a sequentially-descending order
●Skip links are focusable.
●Document has a main landmark.
●Deprecated ARIA roles were not used
●Uses ARIA roles only on compatible elements
○`[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
○`<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.
○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.
○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.
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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