Adjust image colours
Tune exposure, brightness, contrast, saturation, hue, temperature, gamma, sharpness, and blur while using a histogram and same-size comparison to judge the result.
Replace an image colour
Sample and replace a colour with adjustable tolerance and edge feathering, preserve luminance when needed, or make the selected colour transparent.
Local processing: your source images stay on this device.
Files
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Settings
ID photo compositionOn-device detection only suggests a crop; you can still adjust it before export.
This image’s crop has not been confirmed.
ID photo backgroundOptional on-device portrait cut-out; the original never leaves your device.
Dimensions
Preset sizeCommon platform sizes
Select one or more sizes; each image is exported in every selected size.
Icon safe area
One composition generates favicon, PWA and common app sizes, plus a manifest.
Crop areaDrag the box to resize or reposition it
Rotation0°
Quality
Padding on each sidepx
Upscale imageReal-ESRGAN · 2×
Frame rangeLeave the last frame blank to use the rest.
Base64 increases data size. This tool limits input to protect browser memory.
How to use
Replace an image colour
What this tool is for
Sample and replace a colour with adjustable tolerance and edge feathering, preserve luminance when needed, or make the selected colour transparent.
How to use it
Sample the source colour from the image, choose its replacement, and tune tolerance and edge feathering; optionally preserve luminance or make the colour transparent. Inspect similar colours and fine edges before processing the selection.
Results and next steps
Each selected source produces one result card with preview, pixel dimensions, format, and size. Download one file, selected files, or the complete ZIP.
Privacy and local processing
Processing runs in your browser. Source images are not uploaded by this tool.
Before you start
Your browser must decode images into memory. Very large files, long animations, and large batches may require substantial memory. Check the preview and export details, and verify the latest official requirements before submitting identity, application, or print-ready images.
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