Flatten curved photos of documents
Photograph a booklet, a bound book, an ID page — get back a flat, cropped, shadow-free scan. Nothing is uploaded: the whole thing runs inside your browser, and works offline.
drop images here, or paste with ⌘V — JPG, PNG, HEIC
Drag the corners
Redetect
Whole image
Done
Uses ruled lines or table borders as a reference. Best on forms, tables and lined pages.
Evens out the lighting across the page without washing out colour.
Keeps red seals and coloured stamps intact. Turn off only if you need a grey scan.
Print layout
Your files never leave this device
There is no upload button and no server to upload to. The image is decoded and processed by WebAssembly inside this tab. After the first visit the whole tool is cached, so you can turn off your Wi-Fi and it still works — that is the test.
Getting the best result
- Shoot one page at a time. A two-page spread bends across the spine and cannot be flattened as a single surface.
- Press the page flat with a sheet of glass or clear acrylic if you have one. This single trick beats any amount of software correction.
- Shoot straight down, from a little further away with zoom. Wide-angle up close adds distortion that is harder to undo.
- Light from both sides, and turn the flash off. A single overhead lamp casts a shadow into every crease.