↑Choose imageUpload a screenshot for block-based contrast review.Choose image
Choose a screenshot for an approximate contrast scan. The scan cannot identify every text region or replace checking actual text and background colours.
This is a quick visual helper, not a replacement for a full WCAG text contrast measurement.
Results
Find suspicious contrast areas
Highlight low-contrast blocks on a screenshot to guide manual accessibility review.
Use the overlay to find UI areas that deserve a more precise text contrast check.
✓Processing happens in the browser for quick visual tasks and one-off asset preparation.
✓Uploaded files are used only for the current operation and the original image stays unchanged.
✓Preview the result before downloading so layout, crop and colors can be checked first.
✓Most outputs can be downloaded as PNG, SVG, HTML or ZIP depending on the selected tool.
✓Use desktop or tablet fullscreen mode when the image preview needs more working space.
✓For publishing-critical assets, review the downloaded file in the target platform or browser.
Supported formats
This tool accepts these formats. Uncommon containers and modern web formats may be normalized or converted on the server before processing.
Reviews are checked before publication. We publish genuine positive feedback and specific criticism. Spam and insults without useful detail are not published; profanity and personal details are masked. Positive votes are counted immediately; negative votes are counted after review.
Reviews reflect users’ experiences, not a guarantee of results or a description of the service limits. Use the rating buttons above to leave a review.
