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.
Compare images
Slider and side-by-side views · Pixel differences
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
Check an edited version, a compressed copy or an export against its source. Start with the visual comparison and choose the alignment carefully before interpreting the pixel statistics.
How to use
Compare images
What this tool is for
Inspect two images with slider, side-by-side, flicker, and single-image views, then calculate changed pixels, change percentage, and mean pixel error.
How to use it
Load two images and inspect them with slider, side-by-side, flicker, or single-image views, using shared scaling or top-left alignment as appropriate. The report adds changed pixels, percentage changed, and mean error to the visual review.
Results and next steps
The primary result is a structured report with the necessary previews and copyable values. It supports decisions but never deletes or overwrites local files.
Privacy and local processing
Processing runs in your browser. Source images are not uploaded by this tool.
Common questions
What do the numbers mean when the images have different dimensions?
Shared scaling resizes both images to common dimensions; top-left alignment compares only the overlapping area. Scaling itself changes pixels, so choose appropriately. The report measures RGBA pixel differences, not semantic similarity or overall image quality.
Which pair is compared when I import more than two images?
The tool uses the first two in the current processing scope. Choose selected files and check only the intended pair. All files uses the queue’s first two. Analyse again after changing the selection.
Does zero changed pixels mean the files are byte-identical?
Not necessarily. Changed pixels use an RGBA difference threshold, so small changes may not count, and alignment limits the compared region. Inspect the error values and difference image. Use duplicate-image hashing to check byte identity.
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