Deskew PDF — Straighten Tilted Scanned Pages Free Online
Automatically detect and fix the tilt of scanned PDF pages — straighten crooked scans in one click. Free, no sign-up.
How to deskew a PDF
- 1Upload your scanned PDF file
- 2Click 'Deskew'
- 3The tool detects and corrects tilt on each page
- 4Download the straightened PDF
Features
- Detects and corrects tilt up to ±15° per page automatically
- Processes all pages in a single pass
- Preserves content quality without re-encoding
- Works entirely in your browser — no server upload
When it's useful
- Straighten pages scanned at a slight angle from a flatbed scanner
- Improve OCR accuracy by deskewing before text recognition
- Produce professional-looking scanned archives from hand-placed originals
FAQ
How much skew can be corrected?
Up to ±15° of tilt is detected and corrected automatically.
Will the page size change?
Pages may be slightly cropped to remove the white triangular corners after rotation.
Does deskew work on digital PDFs or only scans?
The tool works on any PDF, but skew only occurs in scanned documents — digital PDFs don't need deskewing.