PDF 旋轉

順時針、逆時針或 180° 旋轉 PDF 頁面 — 修復顛倒的掃描件、切換橫豎版,本地瀏覽器直接完成。

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永久旋轉 PDF 頁面 — 免費儲存旋轉後的 PDF

Viewers let you rotate PDF pages on screen, but the file still opens in the wrong orientation on every other device. Our browser-side tool permanently rotates pages and saves the change to a new PDF that opens correctly in any reader. No upload, no sign-up, no quality loss. Ideal for fixing upside-down scans and landscape→portrait conversions before sharing.

100% FreeNo UploadNo Sign-upPermanent Orientation Save

使用步驟

Upload PDF: Drag your PDF into the drop zone. The file stays on your device — pdf-lib runs locally.
Pick Rotation per Page: Click each page preview to rotate it 90° clockwise, 90° counter-clockwise, or 180°. The tool shows you a live preview before saving so you can verify orientation.
Apply Rotation: Click 'Apply' to write the new orientation into every affected page. pdf-lib modifies the page's rotation dictionary directly — no re-rendering, no quality loss, fast on multi-page documents.
Download Rotated PDF: Save the PDF. It opens in any reader (Adobe, Preview, browsers, mobile apps) with the new orientation as the default. Original fonts, images, and text stay intact.

為何選擇此工具

100% Local Processing: Files are processed entirely in your browser using JavaScript — never uploaded to any server.
No Limits: No file count or file size restrictions. Process as many files as your device can handle.
No Sign-up: Free forever, no account needed, no email required. Open the page and start.
Private by Design: Nothing is sent to any server. Close the tab and your files are gone forever.

常見問題

How do I permanently rotate a PDF?

Open our Rotate tool, upload your PDF, click each page preview to choose 90° clockwise, counter-clockwise, or 180°, then click 'Apply'. The tool modifies the page rotation dictionary using pdf-lib locally — your changes are baked into the file. The output opens in the new orientation in any reader, not just on your screen.

Is there a free tool to rotate and save a PDF?

Yes — our Rotate PDF tool is free, no sign-up, no upload, no watermark. The rotation runs entirely in your browser via pdf-lib. We support rotating individual pages by 90° clockwise, 90° counter-clockwise, or 180°, plus an 'apply to all pages' option for batch orientation fixes.

Will rotating a PDF reduce quality?

No. Rotation modifies the page rotation dictionary — pdf-lib does not re-render or recompress any content. All fonts, images, and text stay byte-identical except for the orientation metadata.

Can I rotate only some pages of a PDF?

Yes — the tool shows a thumbnail preview of each page. Click individual pages to rotate them independently. You can also rotate all pages by the same angle with one click. Mixed rotations are common for scanned documents where odd/even pages got scanned in opposite directions.

How is this different from the viewer's rotate button?

Adobe Reader, Preview, and other viewers have a 'rotate' button that only affects how YOU see the file. When you send the PDF to someone else, it opens in the original orientation. Our tool writes the rotation into the file itself, so the new orientation is the default for everyone, everywhere.

Can I rotate a scanned PDF?

Yes — rotation works on any PDF regardless of content. Scanned PDFs, image-only PDFs, and text-based PDFs all rotate correctly. For text extraction from scanned pages after rotation, use our separate OCR PDF tool.

Is my PDF content safe?

Yes. The tool runs entirely in your browser using pdf-lib. Files are never uploaded, never logged, never analyzed. After you close the browser tab, all state is cleared.