Below we show how to automatically correct skewed/rotated scans and straighten scanned pages.

1. Upload your files

   Files are safely uploaded over an encrypted connection. Files stay secure. After processing, they are permanently deleted.

   Click 'Upload' and select files from your local computer.

   Dropbox or Google Drive files

   You can pick PDF files from Dropbox or Google Drive too.

   Expand the 'Upload' dropdown and select your files.

2. Automagically straighten the skewed PDF

   Click the 'Deskew' button and then 'Download' your straightened PDF.

   The deskew algorithm will automatically rotate the scanned images inside the PDF to make sure they are perfectly aligned and no longer skewed.

3. Manually deskew specific PDF pages

   After uploading, choose how you want to deskew your PDF. Select 'Automatic' to let Sejda detect and straighten skewed pages for you, or choose 'Manually page by page' if you'd prefer to review and adjust each page yourself.

   In manual mode, each page is shown with a rotation slider and quick-adjust buttons (±0.1°, ±0.5°, ±1°) so you can dial in the exact correction angle. Navigate between pages using the 'Previous' and 'Next' buttons and adjust each one independently.