Add Watermark to PDF
Stamp diagonal text like "CONFIDENTIAL" or "DRAFT" across every page of a PDF, in your browser.
- 100% free
- No upload — runs in your browser
- No sign-up needed
A watermark signals intent — that a document is a draft, confidential, or a copy — and discourages misuse. This tool overlays your chosen text diagonally across every page at an adjustable opacity, then re-saves the PDF locally, so sensitive files are never uploaded just to be marked.
How to Add Watermark to PDF
- Upload your PDF.
- Type the watermark text (e.g. CONFIDENTIAL, DRAFT, your company name).
- Click "Add watermark" and download the stamped file.
Frequently asked questions
Does the watermark appear on every page?
Yes, the text is stamped diagonally across each page of the document.
Can I remove the watermark later?
The watermark is drawn into the page content, so keep an unwatermarked copy of the original if you'll need a clean version — it can't be simply toggled off afterwards.
Is the file uploaded anywhere?
No. The watermark is applied in your browser, so confidential documents stay entirely on your device.