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 a color · Tolerance and feathering · Live preview
Images stay on your device
Files
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Drop images or a ZIP file here
You can also paste an image or select several at once.
JPEG · PNG · WEBP · AVIF
Settings
Advanced settings
Export 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×
Pick a colour from the image
Frame rangeLeave the last frame blank to use the rest.
Base64 increases data size. This tool limits input to protect browser memory.
About this tool
Recolour a simple icon or remove a uniform background by sampling the source colour. Similar shades elsewhere may match too, so inspect the subject and fine edges before applying the result.
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.
Common questions
Why did the background and clothing both change colour?
Matching uses the source colour and tolerance across the whole image; it does not identify objects. Lower the tolerance, adjust feathering or crop the area first. When you choose to make the matched colour transparent, the tool automatically exports PNG.
How do tolerance and feathering differ?
Tolerance controls which nearby colours match. Feathering blends the outer edge of that colour range gradually. Start with a low tolerance, then add modest feathering and inspect edges. Neither setting protects other objects of the same colour.
How can I keep shading when recolouring fabric or an icon?
Try preserving luminance so the replacement follows the source’s light and dark areas. The resulting pixels may differ from the target HEX. Disable it for a flat colour replacement; it is not used when making the match transparent.
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