MultiKit

Rotate PDF: Turn Pages 90 or 180 Degrees, No Upload

  • Free
  • No sign-up
  • Runs in your browser
  • Version 1.0.1
  • Last updated 2026-11-09
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Fix a PDF whose pages are sideways or upside down. Let the tool stand them upright by reading their text, or turn pages yourself. You see each page first, and the file never leaves your device.

    Everything you enter is processed in your browser and is never sent to a server.

    Browsers:Chrome119+Edge119+Firefox121+Safari17.4+Opera105+Samsung Internet25.0+Browsers

    How to use

    1. Drop your PDF onto the box, or choose it. Every page appears as a small picture.
    2. To turn every page, press Rotate all right, Rotate all left or Rotate all 180°. To turn one page, use the turn arrows under it. You can press them again to keep turning.
    3. To fix sideways or upside-down pages without checking each one, press Fix orientation. The tool reads which way each page's text runs and turns the page upright. Pages with no text to read, such as scans, are left as they are and counted, so you can turn them by hand.
    4. Press Save rotated PDF to download the file as rotated.pdf. The pictures show how the pages will look.

    Examples

    A 4-page PDF: one upright page, one that shows its text sideways, one upside down, and one with only a drawing. Fix orientation
    → The sideways and the upside-down pages are turned upright, the upright one is left, and the drawing page is left as it was. The note reads: Turned 2 pages upright; 1 were already upright; 1 could not be told.
    A page with no text, a scan for example, cannot be checked, so it is never turned on a guess.
    A 3-page PDF, Rotate all right
    → All 3 pages are turned a quarter turn clockwise (90 degrees) in rotated.pdf
    The same PDF, Rotate all 180°
    → All 3 pages are turned upside down (180 degrees)
    The same PDF, only page 2 turned left
    → Page 2 is turned a quarter turn counterclockwise (270 degrees) and pages 1 and 3 stay as they were
    Turning is added to a page's own rotation, so a page that was already turned keeps turning from where it is.

    How it works

    This page is the PDF organizer, with the turning buttons first, plus a way to find the right turn by itself. A PDF page has a rotation setting of 0, 90, 180 or 270 degrees, and viewers turn the page by that amount when they show it. Rotating a PDF therefore means changing that one number for each page, not redrawing anything, which is why nothing is lost. The open-source pdf-lib library, in its maintained @cantoo fork, copies each page into a new file and adds your turn to the page’s own rotation, so a page that was already turned a quarter turn and is turned another quarter turn ends up at 180 degrees.

    To find the right turn, the tool asks PDF.js, the open-source PDF engine from Mozilla, where each piece of text on the page is and which way it is written, as the page is shown, including any rotation it already has. Most of a page’s letters are written one way, so the way most of them point is the way the page is turned. A page is only turned when there are at least 20 letters and at least three quarters of them agree, and text on a slant, such as a diagonal stamp, and mirrored text are left out of the count. Anything else is reported as not told and left alone.

    The pictures show each page already turned, so what you see is what you save.

    The tool is tested by building PDFs with known text, turning all pages and single pages, adding turns to pages that were already turned, and reading the saved files back to check each page’s rotation and that its text is unchanged. The direction finding is tested on pages set to each rotation, on text written turned, on pages with no text or too little, and on mirrored text, and a browser test checks that a PDF sent here from another tool, and one run through a saved tree, comes out upright.

    Sources

    Frequently asked questions

    How do I rotate a PDF?
    Open it here, press Rotate all right or left, check the page pictures and press Save rotated PDF. You get a copy with the pages turned.
    Can it find the right direction by itself?
    Yes, if the page has real text. Press Fix orientation, or choose Stand the pages upright automatically under When a PDF is added. The tool works out which way most of a page's text runs and turns the page to match, but only when there are at least 20 letters and three quarters of them agree. Otherwise the page stays as it is and the note says so.
    What about scanned PDFs?
    A scanned page is one picture, so there is no text to check and the tool does not guess. Such pages stay as they are, are counted in the note, and can be turned with the arrows. Mirrored text is skipped too, because a turn cannot undo a mirror; the flip PDF page is for that.
    What happens when I send a PDF here from another tool?
    The upright fix is turned on for that file, so its pages are straightened as it arrives and you are asked nothing. Running a saved tree that ends at this tool on a new file does the same.
    How do I rotate only one page?
    Use the turn arrows under that page. The other pages are left as they are.
    Does rotating make the PDF worse?
    No. Rotating changes one number per page, its rotation setting, and leaves the page content untouched, so sharpness and quality are not affected.
    Is the rotation saved in the file?
    Yes. The new file opens turned in PDF viewers. The original file is not changed; you download a new one.
    Are my files uploaded?
    No. Reading, turning and saving all happen in this tab, so a private document is never sent anywhere.
    Is there a limit?
    A file can have up to 500 pages and be up to 100 MB. A password-protected PDF cannot be opened here: remove the password in the program that set it, then add the file.
    Version history
    • 1.0.1 — Rewrites the answers about direction finding, scans, files sent from another tool, quality, uploads and limits so that they describe turning only.
    • 1.0.0 — First release.

    Last updated: