Watermark
Stamp a text watermark over every page.
Drag & drop files, or click to select
1–10 files · .pdf
Files never leave your device
Stamp a text watermark — “CONFIDENTIAL”, “DRAFT”, your company name — across every page of a PDF. Control the font size, transparency, and whether it runs diagonally or horizontally, then download the watermarked copy.
Because watermarking is usually applied to documents that are sensitive by definition, this tool runs entirely client-side: the file you're marking never touches a server.
How it works
- 1Select or drag in your files
- 2Choose your options and click “Watermark”
- 3Download the result — everything ran in your browser
Frequently asked questions
Can I control how visible the watermark is?
Yes. The opacity setting runs from barely-there 5% to fully opaque, and you can choose the font size and a diagonal or horizontal angle.
Does the watermark go on every page?
Yes, it's stamped identically across all pages, centered, so the document reads as uniformly marked.
Is my PDF uploaded to add the watermark?
No. Your file is processed entirely in your browser using JavaScript — it is never uploaded to a server, so nothing can be stored, leaked, or read by anyone else.
Can the watermark be removed later?
The watermark is drawn into the page content, not added as a removable annotation — so casual removal isn't possible, though no watermark is cryptographically permanent.