Document & Receipt Scanner
Drag the four corners of a photo to flatten it into a clean scan — no uploads, ever.
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How to use
- Take a photo or upload an existing image of the document.
- Drag each corner pin onto the actual edges of the document — use the magnifier that appears while dragging for precision.
- Tap "Flatten" to get a straightened scan, and apply the B&W filter if you like.
- Download as JPG or PDF.
FAQ
Q. The corners are hard to line up precisely.
A. While dragging, a magnified loupe appears above your finger/cursor — use it to see exactly where the edge is.
Q. Can I process multiple pages at once?
A. Currently one image at a time.
Q. Is my photo uploaded anywhere?
A. No, both the perspective correction and the B&W filter are computed entirely in your browser.
Q. The result looks lower resolution than I expected.
A. Resolution is capped for speed and mobile memory safety — this is still plenty sharp for reading receipts and documents.
Why this stays private
The whole process — reading the photo, correcting the perspective, applying the black & white filter, and building the JPG/PDF — runs entirely in your browser using Canvas math. The image is never sent to a server, so it works even on a huge photo and even offline once the page has loaded.