Turn the pages of a PDF
Straighten a crooked scan or put only the pages that need it in landscape, without scanning again and without sending the document anywhere.
What it does
The tool opens the PDF with pdf-lib and changes the rotation attribute of the pages you pick. You can rotate the whole document or type a range such as 1-3, 7 to touch only those pages.
The rotation is added to whatever the page already had, so two passes of 90° equal one of 180°. The content is not rasterized: text stays selectable and images keep their resolution.
How to use it
- Open Rotate PDF.
- Add the document you want to straighten.
- Choose the rotation: 90° clockwise, 180° or 90° counter-clockwise.
- Leave the pages field empty to rotate everything, or type the ranges you want to change.
- Press “Rotate PDF” and download the file with the corrected orientation.
Why ConvUp
Only the broken pages
Rotate a single page without touching the rest of the document.
No quality loss
Nothing is turned into an image or recompressed.
No upload
The change happens in your browser with pdf-lib.
Why a PDF opens sideways when the scan was straight
A PDF does not store an upright image: each page carries a rotation attribute that the viewer applies when drawing it. If the scanner or the phone detected the sheet in landscape, that attribute can be left at 90° and the document opens on its side even though the content is fine. Changing the attribute, which is what this tool does, fixes the orientation without touching the pixels.
The opposite case exists too: a page stored upright but with the text drawn rotated inside. There the attribute is 0° and the content itself is skewed, so rotating the page will not fix it; those pages need OCR or an image editor.
Rotating a scan so it reads well on a phone
Landscape scans are awkward on a phone: you have to turn the device on every page. If the PDF mixes portrait and landscape pages, rotate only the landscape range (for example 3, 5-6) and leave the rest alone, so the document reads straight through with no jumps in orientation.
If you are going to print double-sided, check the result before sending it: a rotated page changes the visual order of the booklet. And if the file is too heavy for email, run it through Compress PDF afterwards instead of scanning it again.
Frequently asked questions
Is the rotation saved in the download?
Yes. The rotation is written into the PDF, so it looks the same in Adobe Reader, on a phone and when printed.
Can I rotate just one page?
Yes. Type its number in the pages field, for example 4, and pick the angle. The rest stays as it was.
What if the scan is tilted by a few degrees?
This tool rotates in 90° steps. A 2° or 3° tilt is not fixed here: scan again with the sheet aligned or use an image editor.
Does it work with a protected PDF?
Not if it has an open password. Remove the protection with the app that created it and try again.