Organise pages
How to fix an upside-down page in a PDF
By DeckleUpdated
To fix an upside-down page in a PDF, open Rotate PDF, go to the page, set Rotation scope to This page, then choose Turn right twice (or Turn left twice). Two quarter turns make a 180-degree turn. Choose Rotate PDF and download the corrected copy; your original file stays as it was.
How to rotate a PDF page 180 degrees with Deckle
- Open Rotate PDF and choose your PDF, or drop it onto the page.
- Go to the upside-down page using the thumbnails or the preview.
- Under Rotation scope, choose This page. If the whole document is upside down, leave it on All pages instead.
- Choose Turn right twice. After the first click the page lies on its side; after the second it reads the right way up.
- Check the preview. The caption under the page shows the turn, for example "Page 4 · 180° clockwise".
- Choose Rotate PDF, download the new file and open it to check the page.
The result screen tells you how many pages were turned, so you can confirm that only the pages you meant to fix changed.
Two clicks in the same direction
Rotate PDF turns pages in quarter turns of 90 degrees. There is no single 180-degree button, so an upside-down page needs two clicks:
| Clicks | Result |
|---|---|
| Turn right once | 90° clockwise: the page lies on its side |
| Turn right twice | 180°: upside down becomes upright |
| Turn right, then Turn left | Back where it started, no change |
| Turn right four times | A full circle, no change |
Mixing directions cancels the turns out. If the page ends up where it began, the page no longer counts as turned and the button returns to "Turn at least one page first."
A whole scan or one page?
Upside-down pages usually come from a scanner or a phone scanning app, and the pattern tells you which scope to use.
- Every page is upside down. The stack went into the feeder the wrong way round. Keep Rotation scope on All pages and turn twice. Every page turns together.
- One page is upside down. A single sheet was put in the wrong way. Set This page and turn only that page.
- Every other page is upside down. This happens when a double-sided document is scanned on a one-sided scanner and the backs are fed in reversed. Set This page, then go to each affected page and turn it twice. The turns are all saved together.
Example: page 4 of a six-page invoice packet is upside down. Go to page 4, set This page and choose Turn right twice. Pages 3 and 5 stay as they were. After saving, check pages 3, 4 and 5 in the downloaded copy.
What rotation doesn't fix
Turning a page changes its orientation and nothing else.
- A slightly crooked scan stays crooked. Rotate PDF turns in 90-degree steps and does not straighten a page tilted by a few degrees. Rescan the sheet if it needs to be straight.
- A scan stays a picture. Turning an image of a page does not make its words selectable or searchable.
- Printed numbers don't change. Use the page's position in the file to find it, not the number in its footer; a cover page shifts the two apart.
If the scan also has pages in the wrong order or blank backs, fix those in Organize PDF pages, which turns, moves and removes pages in one pass.
Tips
- Judge by the text, not the thumbnail. A dark photo or a diagram can look the same either way up at small size. Select the page and read a heading in the larger preview.
- Use Undo for a wrong click. Undo reverses the last turn, and Reset pages clears every turn if you want to start again.
- Fix the scan before you merge it. It is easier to find an upside-down page in a three-page scan than in a combined 40-page packet. See rotate scans before merging.
Other ways to turn a page upside down
- Preview on a Mac. Choose View > Thumbnails, select the page and click Rotate Left in the toolbar twice. Preview saves changes to the file you opened, so choose File > Duplicate first if you need the original.
- Adobe Acrobat. The paid desktop app rotates pages 180 degrees from its Organize Pages tool. In the free Reader, rotation only changes the view and is not saved.
- Rescan. If you still have the paper and the scanner to hand, rescanning the page the right way up also fixes a crooked angle.
Frequently asked questions
How do I rotate a PDF 180 degrees?
Open Rotate PDF, leave Rotation scope on All pages, choose Turn right twice and then Rotate PDF. To turn one page only, set This page first.
Why is my scanned PDF upside down?
The paper went into the scanner or under the phone camera the wrong way round. The scanner saves what it sees, so the page is stored upside down until you rotate it.
Will rotating an upside-down page reduce its quality?
No. The turn is saved as the page's orientation; the scanned image is not re-compressed.
Can I fix an upside-down page that is also slightly tilted?
Rotate PDF will make it upright but not straight. For a page tilted by a few degrees, rescan it, then replace the page in the document if needed.
Related tools
- Rotate PDF to turn one page or every page
- Organize PDF pages to rotate, reorder and remove scanned pages together
- JPG to PDF to turn a rescanned photo into a PDF page