Add Watermark to PDF
Stamp a text watermark on every page — diagonal or horizontal, free
100% private — Files are processed right in your browser and never uploaded to any server.
使い方
- 1
Drop in the PDF you want to watermark.
- 2
Type your text and pick a color, size, opacity and orientation.
- 3
Click Process and download your watermarked PDF.
選ばれる理由
プライバシー重視
入力は安全に処理され、販売されません。クライアント側ツールはブラウザから一切出ません。
すぐ・無料
インストール不要、待ち時間なし。あらゆる端末のブラウザで数秒で結果。
ずっと無料
登録不要・透かしなし・回数無制限。クライアント側ツールはすべて好きなだけ使えます。
よくある質問
Can I use my own text?⌄
Yes — type anything up to 60 characters, like "CONFIDENTIAL", "DRAFT", or a company name.
Does it cover the content underneath?⌄
No — the watermark is semi-transparent (you control the opacity), so the original content stays fully readable.
Is my file uploaded?⌄
No — the watermark is drawn entirely in your browser. Your PDF never leaves your device.
Can I remove a watermark added by this tool?⌄
Not with this tool — keep your original file if you might need an unwatermarked copy later.