Accessibility
· 13 checks — Landmarks, headings, alt text, forms, and link quality rolled into one auditable list.DLink & Button QualityAction4 issue(s) across 203 links and 11 buttonsFIX
| Element | Text | Issue | Suggested Fix |
|---|---|---|---|
| https://www.facebook.com/dict.leo.org/ | Share on facebook | new tab | Add '(opens in new tab)' to text |
| https://www.instagram.com/leo_org_ihr_sp… | Folge uns auf Instagram | new tab | Add '(opens in new tab)' to text |
| http://www.in.tum.de/ | Rechnerbetriebsgruppe der Faku… | new tab | Add '(opens in new tab)' to text |
| http://www.tum.de/ | Technische Universität Münch… | new tab | Add '(opens in new tab)' to text |
| about:blank | (empty) | empty | Add link text or aria-label |
| (empty) | empty | Add link text or aria-label | |
| (empty) | empty | Add link text or aria-label | |
| https://lion.schleinzer.com/de/home | Lion | new tab | Add '(opens in new tab)' to text |
| <button> | (empty) | empty | Add button text or aria-label |
Links without text are announced as raw URLs by screen readers.
about:blank; a.ql-action (#837 on page); a.ql-remove (#838 on page)
Links with no accessible text (empty <a></a>, image-only no alt, icon-only no aria-label) are unidentifiable to screen readers.
Source: WCAG 2.1 SC 2.4.4
Add '(opens in new tab)' to link text or aria-label.
https://www.facebook.com/dict.leo.org/; https://www.instagram.com/leo_org_ihr_sprachangebot/; http://www.in.tum.de/; http://www.tum.de/; https://lion.schleinzer.com/de/home
Links with target="_blank" without rel="noopener" leak the originating page's window context — security and UX issue.
Learn more ▾ ▴
Without rel="noopener", the new tab can navigate the original tab via window.opener (tab-nabbing attack). Modern browsers default to noopener for target=_blank but only since recent versions. Always set rel="noopener noreferrer" explicitly.
Source: MDN target / OWASP
Icon-only buttons need an aria-label so screen readers can announce them.
button.button (#273 on page)
Buttons with no accessible text (icon-only, no aria-label) can't be activated by voice control or understood by screen readers.
Source: WCAG 2.1 SC 4.1.2
F404 Error PageActionHTTP 404, bare pageFIX
DWeb ManifestActionValid manifestFIX
DDark Mode SupportActionTheme color onlyFIX
Detection limited to meta tags and inline styles.
DPrint StylesheetActionNo print stylesFIX
BLandmark Structure18 landmarksREVIEW
Multiple navigations need aria-label to distinguish them for screen readers.
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.
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
CHeading HierarchyAction28 headings, 2 skip(s)REVIEW
- H1 Home
- H5 Advertising - LEO without ads? LEO Pur skipped
- H3 Dear user,
- H4 Donate via bank transfer
- H4 Donate via PayPal
- H1 LEO’s dictionaries duplicate H1
- H1 Search direction duplicate H1
- H1 English duplicate H1
- H1 German duplicate H1
- H1 Preferred vocabulary duplicate H1
- H1 In multi-word searches duplicate H1
- H3 Other services skipped
- H4 Find out more about LEO.
- H2 English ⇔ German
- H2 English ⇔ Spanish
- H2 English ⇔ French
- H2 English ⇔ Russian
- H2 French ⇔ German
- H2 Spanish ⇔ German
- H2 Italian ⇔ German
- H2 Chinese ⇔ German
- H2 Russian ⇔ German
- H2 Portuguese ⇔ German
- H2 Polish ⇔ German
- H2 Spanish ⇔ Portuguese
- H2 Dictionary Navigation
- H3 emojis
- H3 flags
A page should have only one H1. Multiple H1s dilute the document outline.
Multiple H1s blur the page's primary topic — screen-reader users and Google both prefer one H1.
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HTML5's outline algorithm technically allows multiple H1s within sectioning content, but no browser implements it. In practice: one H1 per page. Use H2-H6 for subsections.
Source: WCAG 2.4.6 / Google Search Central
Skipping heading levels breaks the document outline. Screen readers may interpret missing levels as structural errors.
Skipping heading levels breaks the document outline — screen-reader users lose track of section nesting.
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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
Skipping heading levels breaks the document outline. Screen readers may interpret missing levels as structural errors.
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
CForm AccessibilityAction3 of 10 controls have issuesREVIEW
| Control | Type | Label | Method |
|---|---|---|---|
| order | radio | none | |
| order | radio | none | |
| partial | radio | none | |
| partial | radio | none | |
| input | checkbox | Transliteration aktiv | aria-label |
| select | select | Keyboard settings | aria-label |
| share_url | text | Share as link | aria-label |
| #search-field | search | (Enter your search term(s)) | placeholder only |
| input | text | (none) | none |
| submit | image | (none) | none |
Form controls need a <label>, aria-label, or aria-labelledby for screen readers.
<input type="image" name="submit">; <input type="text">
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
Placeholder text disappears on focus and is not a reliable label.
<input type="search" name="search" id="search-field">
Placeholder-only labels disappear when the user starts typing — they must remember what the field was for.
Learn more ▾ ▴
Placeholders are NOT labels. They vanish on input, fail color contrast checks (most are gray), and don't satisfy WCAG SC 3.3.2. Always use a real <label> alongside (or aria-labelledby).
Source: WCAG 2.1 SC 3.3.2 / Nielsen Norman
CFavicon & BrandingAction5 icon(s) detectedREVIEW
A+Alt Text QualityAll 113 images OKPASS
A+Color Contrast (Screenshot)20 text elements analyzed, 0 fail WCAG AAPASS
Analyzes text contrast against the actual rendered page, including background images, gradients, and overlays that CSS-based tools cannot detect.
Show all checked elements (20)
| Element | Ratio | Required | FG | BG | Result |
|---|---|---|---|---|---|
| h1 Home | 19.18:1 | 3.0:1 | #000000 | #FFF5CB | Pass |
| h1 LEO’s dictionaries | 20.99:1 | 3.0:1 | #000000 | #FFFFFE | Pass |
| h1 Search direction | 20.99:1 | 3.0:1 | #000000 | #FFFFFE | Pass |
| h1 English | 20.99:1 | 3.0:1 | #000000 | #FFFFFE | Pass |
| h1 German | 20.99:1 | 3.0:1 | #000000 | #FFFFFE | Pass |
| h1 Preferred vocabulary | 20.99:1 | 3.0:1 | #000000 | #FFFFFE | Pass |
| h1 In multi-word search… | 20.99:1 | 3.0:1 | #000000 | #FFFFFE | Pass |
| h2 English ⇔ German | 20.99:1 | 3.0:1 | #000000 | #FFFFFE | Pass |
| h2 English ⇔ Spanish | 20.99:1 | 3.0:1 | #000000 | #FFFFFE | Pass |
| h2 English ⇔ French | 20.99:1 | 3.0:1 | #000000 | #FFFFFE | Pass |
| h2 English ⇔ Russian | 20.99:1 | 3.0:1 | #000000 | #FFFFFE | Pass |
| h2 French ⇔ German | 20.99:1 | 3.0:1 | #000000 | #FFFFFE | Pass |
| h2 Spanish ⇔ German | 20.99:1 | 3.0:1 | #000000 | #FFFFFE | Pass |
| h2 Italian ⇔ German | 20.99:1 | 3.0:1 | #000000 | #FFFFFE | Pass |
| h2 Chinese ⇔ German | 20.99:1 | 3.0:1 | #000000 | #FFFFFE | Pass |
| h2 Russian ⇔ German | 20.99:1 | 3.0:1 | #000000 | #FFFFFE | Pass |
| h2 Portuguese ⇔ Germa… | 20.99:1 | 3.0:1 | #000000 | #FFFFFE | Pass |
| h2 Polish ⇔ German | 20.99:1 | 3.0:1 | #000000 | #FFFFFE | Pass |
| h2 Spanish ⇔ Portugue… | 20.99:1 | 3.0:1 | #000000 | #FFFFFE | Pass |
| h2 Dictionary Navigatio… | 20.99:1 | 3.0:1 | #000000 | #FFFFFE | 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 AuditsScore 100/100 — 0 failing, 26 passedPASS
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.