How to auto-rotate PDF pages upright: a step-by-step guide

Drop the PDFs anywhere on the page, or press Add files. Every page is read on arrival - the file list says how many pages of each file need turning. The thumbnails show the pages as they will come out, already upright, and a badge on each page that turns gives its turn: 90°, 180° or 270°.

A page with a text layer is read exactly from the direction of its text. A scan without one is judged from the shape of its lines. Where there is too little to be sure - a page with only a heading, a table of figures, a photo - the thumbnail wears a ?: look at it and decide.

Every page is chosen to begin with; click or drag on the thumbnails to narrow it down, or use the bar above them. 90° left, 180° and 90° right add a quarter turn to the chosen pages on top of what was detected. Read again reads the pages anew, and Reset at the top of the options goes back to what was detected.

Press Turn pages upright. The line under the button counts the pages that turn. The file is saved to your device at once - several files together as a ZIP. A quarter turn is lossless: the page is only marked as turned, nothing on it is redrawn or re-compressed.

Every file is read on its own, so a stack of scans is put right in one run. Under All files in Apply to, a hand turn becomes one rule on top of what was detected in each file - "every even page another 180°" for a duplex scan whose backs all came out upside down.

Without an account, and with a free one, you can turn the pages of two files in a run, each up to 15 MB. With Pro there is no limit on the number or the size.

• Only slightly crooked? Straighten PDF (Deskew).
• Turn chosen pages by any angle? Rotate PDF.
• Make the scan searchable? OCR - make a PDF searchable.