自訂角度旋轉

That's what this tool is for. Type any angle from -360 to 360 degrees, in steps of 0.1, into the box under a page and the thumbnail turns to match; positive values rotate clockwise and negative values counterclockwise.

Enter a small correction such as 1.5 or -2 for the tilted page and watch the preview until the lines of text look level, then click Apply Rotations. If a whole scanned document is skewed, Deskew PDF detects and corrects the angle on every page automatically.

For 90, 180, and 270 degrees the rotation is stored as a page attribute and the page just turns. For any other angle the content is placed on a new page sized to the rotated bounding box, so the page gets larger and the corners around the content are left blank.

No. The page content is embedded as vector content and drawn at the new angle, so text stays sharp, selectable, and searchable at any zoom level. Links, form fields, and comments on pages rotated by a non-90-degree angle aren't carried over, though.

Type the angle in the Batch Rotation box at the top and click Apply to All. That overwrites the angle on every page, so make any per-page tweaks after the batch step, not before.

They nudge that page's angle by one degree in either direction and are handy for fine-tuning after typing a rough value. For finer control, type the value directly; the field accepts tenths of a degree.

Each page has its own angle field, so set the value on the page you want and leave the others at 0. Pages left at 0 are copied through unchanged.

No. The thumbnails are rendered and the rotated PDF is rebuilt in your browser, and the file downloads under its original name straight from the page. Nothing is sent to a server.