Custom text
Any label — CONFIDENTIAL, SAMPLE, internal codes.
透かし追加
カスタム位置でテキスト透かしを追加。
ローカル処理 — ファイルは端末内に留まります
ファイルをここにドロップするか、クリックして選択
1回あたり最大 50 MB
Add a text watermark to every PDF page online — free, local, ideal for drafts and confidential docs.
- Custom watermark text
- Applied to all pages
- Local processing
Mark Documents Before You Share
Add Watermark stamps CONFIDENTIAL, DRAFT, or custom text diagonally across every page.
Watermarks deter casual copying and signal document status before final release. Enter your text, upload a PDF, and download the marked file in seconds.
Watermarking runs locally — sensitive drafts never touch our servers.
Why watermark with PDF900
Every page
Consistent watermark across the full document.
Local & free
No account, no upload — free to use.
How to add a watermark to a PDF
- 1
Upload your PDF and enter watermark text.
- 2
Click “Add Watermark”.
- 3
Preview the result by downloading watermarked.pdf.
- 4
Combine with Protect PDF for password security.
Watermark benefits
Contract Pack
Watermark before sign & protect in one workflow.
Draft protection
Clearly mark non-final versions.
Local privacy
Files stay on device.
Free
No Pro subscription needed.
よくある質問
- Custom text?
- Yes — enter any text before processing.
- Removable?
- Embedded text watermarks are hard to remove; add password with Protect PDF for stronger control.
- Uploaded?
- No — runs in your browser.