Add Watermark
Choose pages, customise per-page size & position — preview updates live
Drop a PDF file here or click to browse
application/pdf
Add watermark to PDF — free online, instant preview
Stamp a text watermark — "Confidential", "Draft", your company name, anything — across every page of a PDF. Free, in your browser, with a live preview on every page before you download.
Set the text, opacity, colour, font size, and position once and it applies to the whole document. Or customise individual pages for different needs.
How to add a watermark to a PDF
- 1
Upload your PDF
Drop the file in. Thumbnails load instantly and update live as you change the watermark settings.
- 2
Set up the watermark
Type your text, pick opacity (5–80%), font size (16–90pt), colour, and one of eight positions (diagonal, centre, corners, or edges).
- 3
Customise individual pages
Click any page to override its font size or position — useful for cover pages, landscape spreads, or sample-only chapters.
- 4
Download the watermarked PDF
Click Download. The watermark is burned into every page permanently and saves to your device.
Why use this tool
8 preset positions
Diagonal, centre, top/bottom, and all four corners — one click sets the look across the whole document.
Opacity control
Slide from 5% (subtle background stamp) up to 80% (bold CONFIDENTIAL mark).
Colour and font size
Gray, Red, Blue, Green, or Black — and any font size from 16pt to 90pt.
Per-page overrides
Expand any page to override its font size or position for a custom look.
Live preview
See exactly how the watermark looks on every page before you export — no guesswork.
Private by default
Files are watermarked in your browser — never uploaded.