Articles · PDF Tools
Stamp CONFIDENTIAL without rewriting the whole PDF
Drafts leak. Sample decks get forwarded as finals. A diagonal CONFIDENTIAL mark will not stop a determined person, but it reduces honest mistakes and marks intent. Desktop editors are heavy for a one-off stamp. A browser tool that draws text or an image across selected pages and downloads a new PDF keeps the original untouched.
Why this is worth doing in the browser
DevNestro’s PDF Watermark tool extends the same pdf-lib client used by Merge and Split. Choose text, optional PNG/JPG image, size, opacity, rotation, position, and page range. Presets fill common labels. Preview renders page one of the new file. Start Over clears the session state. Encrypted source PDFs are rejected the same way as other client PDF tools.
How to use the tool
Drop a PDF, set text or image options, preview if you want, download the watermarked copy, then Start Over when you move to another file. Related PDF Page Numbers and PDF Protect cover numbering and passwords.
- Watermarks are visual; they are not redaction.
- Use page ranges when only the appendix should be marked SAMPLE.
- Keep opacity readable but not crushing body text.
- Download a new file; do not expect the disk original to change.
Privacy
Watermarking runs in your browser. PDFs are not uploaded to DevNestro for this tool.
Need a DRAFT stamp before you circulate? Open PDF Watermark and download a marked copy.