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PDF に透かし

PDF に透かしを入れる

ブラウザで動作 · アップロード不要

このツールとページ内の説明は、現在は英語のみです。動作は同じで、すべてブラウザ内で実行されます。

Drag & drop a PDF here

or

One PDF file

Your files stay on your device. Nothing is uploaded.

  • 何も端末から出ません
  • サーバーによるサイズ制限なし
  • 登録不要・透かしなし
  • 無料

How to add a watermark to a PDF

  1. Choose your PDF.
  2. Type the watermark text and choose its size, color, opacity and angle, once in the center or repeated across the page.
  3. Choose all pages or some pages, then save and download.

Good to know

  • The watermark is placed upright and centered even on rotated pages.
  • Text in any language works, including Chinese, Japanese, Arabic and Cyrillic.
  • The page content is copied as it is; only the watermark is added.
  • For an image watermark on photos, use Add Watermark to Images.
  • Password-protected PDFs must be unlocked first with Unlock PDF (you need the password).

Your PDF stays in your browser

The file is read and changed on your device. Nothing is uploaded, so contracts, statements and IDs stay private.

よくある質問

Can the watermark be removed?

It is added as part of the page, which makes removal hard but not impossible with editing software. For real protection, also use Protect PDF.

Is my PDF uploaded?

No. Everything happens in your browser.