Kontrastprüfer
WCAG 2.1 Farbkontrast-Barrierefreiheit prüfen
WCAG 2.1
ℹ️ Über Kontrastprüfer
The Color Contrast is a free developer tool built for speed and privacy. Check WCAG 2.1 color contrast accessibility compliance Every operation runs entirely in your browser, which means your code, text, or payload is never uploaded to a server. Paste your input, hit the button, and get the output — formatted, validated, or transformed — in milliseconds. This Color Contrast is designed to replace slow, bloated web apps with a single focused page that loads fast, works offline after first visit, and handles both small snippets and large inputs gracefully.
💡 Anwendungsfälle
💎 Profi-Tipps
- Paste your content directly — the Color Contrast detects common input patterns and applies sensible defaults automatically.
- Use keyboard shortcuts (Ctrl/Cmd+A to select all, Ctrl/Cmd+C to copy) to speed up your workflow inside the Color Contrast.
- For very large inputs, break them into chunks — most browser tabs can handle megabytes of text, but parsing huge payloads may freeze the UI briefly.
- The Color Contrast does not log or store your input. If you need history, copy important outputs to a local file or note app.
- Combine the Color Contrast with other tools on this site (formatters, converters, encoders) to build complete data pipelines without leaving your browser.
❓ Häufig gestellte Fragen
Yes, fully free with no signup, no API key, no watermarks, and no usage limits.
No. The Color Contrast runs entirely client-side in your browser. Your input never touches our servers.
There is no hard limit, but expect slowdowns on inputs larger than a few megabytes, depending on your device's memory.
Yes. Outputs generated with the Color Contrast are yours to use freely in any personal or commercial project.
Most of the logic runs in client-side JavaScript, so after the initial load you can often keep working without a network connection.
None. Because the Color Contrast runs in your browser, you can process as many inputs as your hardware allows without API keys or throttling.