Deskew PDF - Straighten Scans Free
Automatically straighten skewed scanned pages in your PDF with angle detection. Batch deskew - free, private, and in-browser.
Upload Scanned PDF Files
About This Tool
Deskew automatically detects and corrects skewed scanned pages - straightening content that was fed into the scanner at an angle. Add it to scans and OCR pipelines for cleaner results.
Slightly rotated pages look sloppy and confuse OCR. Deskew fixes the angle so text is level and reading is effortless.
Everything runs locally in your browser, keeping your scans private and the tool free.
How to Use
Upload your PDF
Drag and drop one or more scanned PDFs to deskew.
Run the detection
Let the tool measure each page's skew angle.
Preview the fix
Check that pages are straightened correctly.
Download
Download the corrected, straight PDFs.
Use Cases
Scanner Cleanup
Fix pages skewed by imperfect scanner feeds.
OCR Preparation
Straighten pages before OCR for accurate recognition.
Archive Quality
Level historical scans for cleaner archives.
Frequently Asked Questions
How does the skew detection work?
The tool analyzes text and content lines to measure each page's rotation and correct it.
Can I process many files?
Yes - batch deskew up to 10 scanned PDFs at once.
Is my PDF uploaded?
No - deskewing runs entirely in your browser.