Screenshot contrast audit
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.
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Processing happens in the browser for quick visual tasks and one-off asset preparation.
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Uploaded files are used only for the current operation and the original image stays unchanged.
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Preview the result before downloading so layout, crop and colors can be checked first.
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Most outputs can be downloaded as PNG, SVG, HTML or ZIP depending on the selected tool.
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Use desktop or tablet fullscreen mode when the image preview needs more working space.
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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.
Images
APNG
AVIF
BMP
DDS
DPX
EXR
FITS
FTS
GIF
HDR
HEIC
HEIF
ICO
J2C
J2K
JPC
JPE
JPEG
JPG
JP2
JPF
JPS
JXL
PAM
PBM
PCX
PGM
PNG
PNM
PPM
PSD
TGA
TIF
TIFF
WBMP
WEBP
SVG
A damaged file or a non-standard codec can still fail even when the extension is supported.
