Why does my scan open sideways?

Scanners record the page in the orientation the sensor saw it and set a rotation flag so readers display it upright. When that flag is missing or wrong, the page appears turned. This sets it correctly.

Does rotating lose any quality?

None at all. Rotation is a number stored with the page; nothing is redrawn or recompressed, and the file size barely changes.

Why did my page end up at an unexpected angle?

The turn is added to the rotation the page already had, rather than replacing it. A page already stored at 90° that you turn by another 90° ends at 180°, which is deliberate: it means a sideways scan finishes upright.

Can I rotate only some pages?

Yes — that is the usual case for a scan where a few sheets went through the feeder the wrong way. Enter a list like 2, 5-7, or use odd or even.

Rotate PDF

Fix a PDF whose pages are sideways. Choose which pages to turn — all of them, just the odd ones, or a specific list — and by how much. The rotation is stored as a property of the page rather than redrawing anything, so the file stays the same size and the text stays selectable.

PDF Tools

Choose a PDF to rotateRotated on your device — the document is never uploaded

Rotation is a property of the page, not a redraw — the content is untouched and the file stays the same size. The turn is added to any rotation the page already has, so a scan that is already sideways finishes upright rather than being reset.

Private by default

This tool runs entirely in your browser. Your data is never uploaded to a server.

How it works

Rotation is metadata, not a redraw

new angle = (existing rotation + turn) mod 360

Every PDF page carries a rotation value that readers apply when displaying it. Setting that value turns the page without touching a single byte of its content, which is why the operation is instant and lossless.

Only multiples of 90 are valid in the PDF specification — arbitrary angles are not possible at the page level.
The existing rotation is added to, not replaced, so pages that were already turned end up where you expect.
Because content is untouched, text stays selectable and searchable and images keep their exact quality.
The page's width and height are unchanged; readers swap them when applying a 90° or 270° rotation.

For reference

Which turn fixes what

Problem	Turn by
Top of the page is on the left	90° clockwise
Top of the page is on the right	90° counter-clockwise
Page is upside down	180°
Every other page is upside down	180° on odd or even pages

The last row is the signature of a double-sided scan fed in one direction — rotating only the even pages fixes it in one pass.

How to use

4 clear steps.

Drop in the PDF you want to fix.
Choose which pages to rotate — all, odd, even, or a list.
Pick 90, 180, or 270 degrees.
Download the rotated document.

Good to know

Frequently asked questions

Why does my scan open sideways?: Scanners record the page in the orientation the sensor saw it and set a rotation flag so readers display it upright. When that flag is missing or wrong, the page appears turned. This sets it correctly.
Does rotating lose any quality?: None at all. Rotation is a number stored with the page; nothing is redrawn or recompressed, and the file size barely changes.
Why did my page end up at an unexpected angle?: The turn is added to the rotation the page already had, rather than replacing it. A page already stored at 90° that you turn by another 90° ends at 180°, which is deliberate: it means a sideways scan finishes upright.
Can I rotate only some pages?: Yes — that is the usual case for a scan where a few sheets went through the feeder the wrong way. Enter a list like 2, 5-7, or use odd or even.