Is WCAG Color Contrast Checker free?

Yes. The tool is free and does not require registration.

Can I use this tool on a phone?

Yes. The interface is responsive, although file capacity depends on available device memory.

WCAG Color Contrast Checker

Evaluate whether a foreground and background color combination meets common accessibility contrast thresholds.

How to use WCAG Color Contrast Checker

Choose or enter the source content in the tool above.
Review the available format, quality, unit, or privacy controls.
Run the conversion and verify the result before copying or downloading it.

Useful examples

Check normal text against WCAG AA.
Test large display text.
Compare accessible color alternatives.

Private browser processing

Evaluate whether a foreground and background color combination meets common accessibility contrast thresholds. Files and entered content stay on this device; ConvertFree does not upload conversion inputs to a processing server.

Limitations

Processing capacity depends on the memory available in your browser and device.

Frequently asked questions

Is this tool free?

Yes. It works without registration or a paid conversion plan.

Does ConvertFree upload my input?

No. The conversion or calculation runs locally in this browser.

Can I use it on a phone?

Yes. The interface is responsive, although large files may require more memory than some mobile devices provide.