Private image review
Compare before and after images locally.
Review side by side, as an overlay, difference or mask, then save a self-contained proof with notes. Images are processed in this browser.
Choose the two images
JPEG / PNG / WebP, up to 8 MiB and 20 megapixels each. The dimensions must match.
Safe boundaries
- Reading, comparing and creating the proof happen in this browser; nothing is sent elsewhere.
- Difference is per-pixel RGB distance and mask is a black/white view against the tolerance. No automatic quality decision or repair is made.
- Notes are review coordinates and do not guarantee image safety or correctness.
- Saving is explicit. Source images, notes and outputs remain in tab memory until you clear or leave.