Utilities
Image Compare
Compare two images side by side with synchronized zoom and pan. Includes a slider overlay mode for pixel-perfect before-and-after comparisons. Useful for QA testing, verifying processing results, and comparing design iterations.
Features
- Side-by-side and slider overlay comparison modes
- Synchronized zoom and pan across both images
- Pixel-level difference highlighting
- File size and metadata comparison
- Works with any image format SnapOtter supports
What you can do
- Compare before and after image processing results
- QA check compression quality against the original
- Review design iterations with pixel-level precision
- Verify color accuracy between source and output files
Self-hosted. Your images never leave your network.
SnapOtter runs entirely on your own infrastructure. Images processed with Image Compare are never uploaded to third-party servers. Deploy a single Docker container and process images with full privacy, no watermarks, and no usage limits. Open source under AGPL-3.0.
Frequently asked questions
- How does the slider comparison work?
- Both images are overlaid and a draggable slider reveals one image on the left and the other on the right. Drag the slider to compare any region of the two images at full resolution.
- Can I compare images of different sizes?
- Yes, though the comparison is most useful when both images have the same dimensions. Different-sized images will be displayed at the same visual scale for relative comparison.
- What is pixel-level difference highlighting?
- This mode shows only the pixels that differ between the two images, highlighting changes in color, brightness, or content. Identical pixels appear black. It is useful for QA and verifying edits.
Ready to try Image Compare?
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