Deskew PDF
Automatically detect and correct the tilt of each page in a scanned PDF — crooked pages come out straight. Runs entirely in your browser.
Drop a PDF here or click to choose
Best for scanned or image PDFs. Pages are re-rendered straightened.
Scanned and photographed documents almost always come out a little crooked. This deskew tool measures the skew angle of each page in your PDF and rotates it perfectly straight, so tilted scans, slanted text, and lopsided forms become clean and readable. It's ideal for tidying up receipts, contracts, and book scans before archiving or OCR. Detection and rotation run entirely in your browser, so nothing is uploaded and your files stay private.
How to Deskew PDF
- Drop in your scanned or image PDF.
- Each page is analysed and its tilt corrected automatically.
- Download the straightened PDF.
Frequently asked questions
Which PDFs work best?
Scanned or image-based PDFs with clear text and visible page edges deskew best. The tool re-renders each page straightened, so it isn't designed for born-digital text PDFs that are already perfectly aligned.
Is anything uploaded to a server?
No. Skew detection and page rotation happen entirely in your browser, so your document never leaves your device. It's 100% private and well suited to confidential contracts or records.
How much tilt can it correct?
It reliably detects and fixes skews of roughly plus or minus 10 to 15 degrees. Pages that are already straight are left untouched, so you won't introduce new tilt by accident.
Can it straighten every page in one go?
Yes. Each page is analysed individually, so a multi-page PDF where pages tilt in different directions is corrected page by page in a single pass — no need to fix them one at a time.
Does it work offline and on mobile?
Yes. Because all processing runs locally, the tool works on phones and tablets and keeps working once the page has loaded, even with no internet connection.
