WCAG Contrast Checker
Free • No signup • Runs in your browser
Check color contrast ratios for WCAG AA and AAA accessibility.
100% Private
Files are processed locally in your browser and never uploaded to a server.
Instant Results
No queues, no waiting — get your output the moment you click.
No Signup
Free to use with no account, no email, and no watermarks.
Works Everywhere
Runs on any modern device — desktop, tablet, or mobile.
What is WCAG Contrast Checker?
WCAG Contrast Checker is a free, browser-based utilities tool that check color contrast ratios for wcag aa and aaa accessibility. Everything runs in your browser, so your files are processed on your device, not on our servers.
How it works
Upload your file or data by dragging and dropping or browsing your files.
Adjust the available settings to your preference and preview changes in real time.
Click the process button to run the tool.
Download or copy your result instantly — no waiting, no email required.
Perfect for
- Check color contrast ratios for WCAG AA and AAA accessibility
- Quick everyday calculations and unit conversions
- Processing, formatting, and cleaning text data
- Generating random values and test data
Why use it
- 100% browser-based — your files are processed on your device
- Free, with no signup or account required
- Instant results with no processing queues
- Works on any device — desktop, tablet, or mobile
- No watermarks on your output
Frequently asked questions
Is WCAG Contrast Checker free?
Yes, WCAG Contrast Checker is free to use, with no hidden fees.
Is WCAG Contrast Checker safe to use?
Yes. WCAG Contrast Checker runs in your browser, so your files are processed on your device, not on our servers.
Do I need to install anything to use WCAG Contrast Checker?
No. WCAG Contrast Checker is a web-based tool that works in any modern browser — Chrome, Firefox, Safari, or Edge. Just open the page and start using it.
How does WCAG Contrast Checker work?
WCAG Contrast Checker is a utilities tool that check color contrast ratios for wcag aa and aaa accessibility. Add your file, adjust the available settings, and get your result right away, all processed in your browser.
Does WCAG Contrast Checker work on mobile?
Yes. WCAG Contrast Checker is fully responsive and works on desktops, tablets, and mobile phones. The interface adapts to your screen size automatically.
Are there any limits when using WCAG Contrast Checker?
WCAG Contrast Checker has no daily usage caps and adds no watermarks. Because it runs on your device, very large files depend on your device's memory.
Ready to use WCAG Contrast Checker?
Free, instant, and runs entirely in your browser. No download, no signup, no limits.
Takes less than 10 seconds