PDFを回転
横向きや上下逆のページを数秒で修正します。
使い方
90°、180°、270°、または360°回転を選んでプレビューを確認し、ダウンロードするだけ——すべてブラウザ内で、すべてのページが同じように回転します。
PDF全体ではなく1ページだけ回転できますか？
現在の「PDF回転」は、ファイル内のすべてのページに同じ回転を適用します。向きが混在する文書の場合は、まず「PDF分割」でページを分け、該当ページのファイルを回転してから「PDF結合」で元に戻してください。
回転するとPDFの画質は下がりますか？
いいえ——ページは内容を再描画するのではなく向き（オリエンテーション）を変更するだけなので、画質とファイルサイズは変わりません。
Does rotating change the page size?
For a 90° or 270° rotation, width and height swap (a portrait page becomes landscape). 180° keeps the same dimensions, just upside down.
Can I preview before downloading?
Yes — the preview updates live as you choose a rotation, so you can confirm it looks right before downloading.
Will this fix pages that were scanned at a slight angle, not just sideways?
No — this tool rotates in fixed 90° increments. A slightly skewed scan needs a de-skew tool, which isn't what Rotate PDF does.
Can I rotate different pages in different directions?
Yes — in "Rotate pages individually," each page rotates on its own. Turn page 2 one way and page 5 another, and every other page stays exactly as it was.
Will it still rotate correctly if my scanner already rotated some pages?
Yes — each rotation is added on top of whatever orientation the page already has, not reset to zero. So a page your scanner rotated 90° that you then rotate another 90° ends up at 180°, not stuck back at 0°.
What if only one page out of many needs fixing?
Use "Rotate pages individually" — click just that one page in the grid until it's upright, then download. Every other page keeps its original content and quality, untouched.