💧 PDF 透かし
PDFに透かしを追加 — 無料、高速、プライベート。
Drop PDF file(s) here
or click to browse
使い方 PDF 透かし
ファイルを上のエリアにドラッグ＆ドロップするか、クリックして選択してください。
ボタンをクリックして、ブラウザ内で即座にファイルを処理します。
処理されたファイルは自動的にダウンロードされます。登録不要！
Performance & Details
Adds semi-transparent diagonal text across every page. Customizable text (CONFIDENTIAL, DRAFT, your company name). Font rendered via fontkit — supports Latin characters.
All processing uses pdf-lib (open-source). Files stay in your browser — zero server uploads. Last verified: May 2026.
PDF 透かし — 全米で利用可能
PDF 透かし — Available Across Europe
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Go Pro — $5/monthPDF 透かし — Frequently Asked Questions
Can I customize the watermark text?▼
Yes — type any text you want. Common choices are CONFIDENTIAL, DRAFT, COPY, or your business name.
Will the watermark cover the document content?▼
The watermark is semi-transparent and positioned diagonally, so underlying text remains readable.
Can I add an image watermark instead of text?▼
Currently text watermarks are supported. Image watermark support is on our roadmap.
Can the watermark be removed?▼
The watermark is embedded in the PDF and cannot be easily removed without specialized software.
Does watermarking work on scanned PDFs?▼
Yes — the watermark is added as a text layer over every page, including scanned image PDFs.