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Accessibility

· 13 checks — Landmarks, headings, alt text, forms, and link quality rolled into one auditable list.
SCORE
70
GRADE
C
FIX
3
REVIEW
4
PASS
6
INFO
0
Checks
13
6 PASS 4 REVIEW 3 FIX
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
Heading Hierarchy
37 headings
REVIEW
37 headings
Critical::
No H1 heading found
Every page should have one H1 that describes the page content.
  • H2 Das DLR
  • H2 Forschung & Transfer
  • H2 Aktuelles
  • H2 Medien
  • H2 Karriere & Nachwuchs
  • H2 DLR auf der Hannover Messe 2026
  • H2 Wo beginnt die Quantenwelt?
  • H2 Artemis II startet zum Mond – mit deutscher und europäischer Technologie an Bord
  • H2 Mission Mond
  • H2 Raketentest in Norwegen, Stresstest im Cockpit, autonomes Fahren auf unseren Straßen
  • H2 Unsere Themen
  • H2 Luftfahrt
  • H2 Raumfahrt
  • H2 Energie
  • H2 Verkehr
  • H2 Sicherheit und Verteidigung
  • H2 Innovation und Transfer
  • H2 Fortschritt aktuell – unsere News
  • H2 AERO 2026: DLR zeigt Forschung für virtuelle Flugerprobung und klimaverträgliches Fliegen
  • H2 Für effiziente und kompakte Bahnfahrwerke der Zukunft: DLR nimmt Prototypen in Betrieb
  • H2 Technologien für die Wirtschaft: DLR auf der Hannover Messe 2026
  • H2 DLR testet im Flug verformbaren Flügel
  • H2 Aus dem DLR
  • H2 DLR lizenziert SmartHand-Technologie an Schunk
  • H2 DLR und Südkorea starten Forschungskooperation
  • H2 Das DLR in zwei Minuten
  • H2 Veranstaltungen – Innovationen live erleben
  • H2 DLR_Raumfahrt_Show 2025/2026
  • H2 Hannover Messe 2026
  • H2 AERO Friedrichshafen 2026
  • H2 Girls‘ Day 2026
  • H2 Gestalte mit uns die Welt von morgen
  • H2 DLR Karriereportal
  • H2 Merchandising, Mode und mehr – online im Space-Shop
  • H2 Space-Shop des Sozialwerks beim DLR e.V.
  • H2 Kontakt
  • H2 Über die Website

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 Besuchen Sie uns auf RSS ✓Custom Styling ✓Navigation ✓Homepage Link ✓Search Form ✗
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)
C
Color Contrast (Screenshot)
Action
20 text elements analyzed, 1 fail WCAG AA
REVIEW

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

19 pass 1 fail WCAG AA
h2 Das DLR
2.64:1
#000000
on
#4D5252
needs 3.0:1 (large text)
24px · above the fold · over background image/gradient

1 contrast failures on background images/gradients

These failures are invisible to CSS-based accessibility tools like Lighthouse. The text may be fine on a solid background, but fails when rendered over an image or gradient.

Show all checked elements (20)
ElementRatioRequiredFGBGResult
h2 Das DLR2.64:13.0:1
#000000
#4D5252
Fail
h2 Forschung & Transfer21.00:13.0:1
#000000
#FFFFFF
Pass
h2 Aktuelles21.00:13.0:1
#000000
#FFFFFF
Pass
h2 Medien21.00:13.0:1
#000000
#FFFFFF
Pass
h2 Karriere & Nachwuchs21.00:13.0:1
#000000
#FFFFFF
Pass
h2 DLR auf der Hannover…21.00:13.0:1
#000000
#FFFFFF
Pass
h2 Wo beginnt die Quant…21.00:13.0:1
#000000
#FFFFFF
Pass
h2 Artemis II startet z…21.00:13.0:1
#000000
#FFFFFF
Pass
h2 Mission Mond21.00:13.0:1
#000000
#FFFFFF
Pass
h2 Raketentest in Norwe…21.00:13.0:1
#000000
#FFFFFF
Pass
h2 Unsere Themen21.00:13.0:1
#000000
#FFFFFF
Pass
h2 Luftfahrt21.00:13.0:1
#000000
#FFFFFF
Pass
h2 Raumfahrt21.00:13.0:1
#000000
#FFFFFF
Pass
h2 Energie21.00:13.0:1
#000000
#FFFFFF
Pass
h2 Verkehr21.00:13.0:1
#000000
#FFFFFF
Pass
h2 Sicherheit und Verte…21.00:13.0:1
#000000
#FFFFFF
Pass
h2 Innovation und Trans…21.00:13.0:1
#000000
#FFFFFF
Pass
h2 Fortschritt aktuell …21.00:13.0:1
#000000
#FFFFFF
Pass
h2 AERO 2026: DLR zeigt…21.00:13.0:1
#000000
#FFFFFF
Pass
h2 Für effiziente und …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
Landmark Structure
7 landmarks
PASS
7 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 "Toolbar" MAIN ASIDE "Skiplinks" 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+
Alt Text Quality
1 of 24 images have issues
PASS
1 of 24 images have issues
Warning::
1 image(s) with generic alt text
Info::
13 decorative image(s) correctly marked
Info::
10 image(s) with good alt text
24 images 10 good alt text 13 decorative 1 generic
IssueCount
generic1 image(s)
A+
Form Accessibility
No form controls
PASS
No form controls
Info::
No form controls on this page
No form controls found.
A
Favicon & Branding
6 icon(s) detected
PASS
6 icon(s) detected
Info::
favicon.ico present at site root
Info::
HTML icon links detected
Info::
Apple touch icon present
Info::
SVG favicon detected — scales perfectly to any size
Info::
Multiple icon sizes detected
✓ favicon.ico Present
✓ PNG Icons Present
✓ Apple Touch Present
✓ SVG Favicon Present
✓ Manifest Icons Present
✓ Multiple Sizes Present
A+
Lighthouse Accessibility Audits
Score 100/100 — 1 failing, 25 passed
PASS
100

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.

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
Kontaktformular div.details > ul > li > a
Barrierefreiheit div.details > ul > li > a
Datenschutzerklärung div.details > ul > li > a
Datenschutz-Einstellungen (Cookies) div.details > ul > li > a
Impressum & Nutzungsbedingungen div.details > ul > li > a
○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 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
●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.
●Heading elements appear in a sequentially-descending order
●Skip links are focusable.
●Document has a main landmark.
●Deprecated ARIA roles were not used
○`[accesskey]` values are unique
○`button`, `link`, and `menuitem` elements have accessible names
○Elements with `role="dialog"` or `role="alertdialog"` have accessible names.
○`[aria-hidden="true"]` elements do not contain focusable descendents
○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
○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.
○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.
○Identical links have the same purpose.
○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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