Straighten skewed scanned PDF pages directly in your browser. Detect slight page tilt, preview corrections, manually adjust pages, and download a corrected PDF without uploading your file.
Last updated: April 2026 | By Patchworkr Team
Click or drag PDF here
PDF files only
PDF deskewing straightens scanned pages that were captured at a slight angle. This commonly happens with phone scans, book scans, photocopies, receipts, forms, and old scanned paperwork.
This tool renders each PDF page as an image, analyzes the likely text angle, rotates the page in the opposite direction, and rebuilds a new corrected PDF in the browser.
Select a scanned or crooked PDF. The first few pages are loaded for preview.
Use auto-detect to estimate page tilt, then fine-tune pages manually if needed.
The tool rebuilds a new PDF from straightened page images and downloads it to your device.
No. This browser version rasterizes each page, straightens it, and rebuilds the PDF from corrected images. That is the practical way to support small-angle deskewing in the browser.
No. Processing happens locally in your browser using PDF.js, canvas, and pdf-lib.
The corrected PDF is rebuilt from page images. Higher export quality creates larger files.
This tool is for small scan skew. Use a rotate PDF tool first for pages turned 90°, 180°, or 270°.
It works best on scanned documents with clear horizontal text lines. Blank pages, diagrams, photos, and image-heavy pages may need manual adjustment.
Yes. Each page stores its own angle, so you can adjust pages individually.
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