Watermark PDF
100% free & online — drop your PDF here to stamp text or your logo.
How to add a watermark to a PDF
Three steps from upload to a watermarked PDF. No signup, no installs.
Drag one or more PDFs into the dropzone, browse your device, or import from Google Drive or Dropbox.
Type text like "CONFIDENTIAL" or upload your logo, then set position, rotation, opacity, size and colour — or tile it across the page. The preview updates live.
Click Add watermark and your stamped PDF is ready in seconds — the original text, links and quality stay intact.
Add Watermark to PDF Online — Free & Private
A watermark tells readers a document is a draft, confidential, a sample, or yours. It discourages copying, protects your brand, and makes leaked copies easy to trace — but most watermark tools make you upload your file to a server first.
This tool adds a watermark to your PDF right in your browser. Use text such as "CONFIDENTIAL", "DRAFT", "SAMPLE" or "Do not copy", or upload a logo image. Place it in any of nine positions or tile it across every page, rotate it diagonally, and fade it with opacity so the content stays readable.
The watermark is stamped onto the page itself, so it appears in every PDF viewer and when printed. Landscape, rotated and mixed-size pages are handled automatically, and you can watermark a page range, several PDFs at once, or reorder and remove pages first.
Whether you need to add a watermark to a PDF contract, stamp your logo on a portfolio, or mark a report as draft, it's free, with no signup, no hidden watermark of our own and no daily limit — just a 200 MB per-file cap.
Why Use Our PDF Watermark Tool?
Flexible, private and free — no app, no upload, no fuss.
Watermarks are added locally in your browser. Your PDF and logo are never uploaded or stored.
Stamp any text or upload a PNG, JPG, WebP or SVG image — transparent logos look especially clean.
See the watermark on every page as you adjust it, so the result looks exactly how you expect.
Nine positions, diagonal or straight, adjustable opacity and size — or repeat it across the whole page.
Your pages aren't re-rendered — text stays selectable, links keep working and images aren't recompressed.
iPhone, Android, Mac, Windows — if it has a modern browser, it works. No app to install.
Related PDF tools
Free, browser-based, and built the same way as Watermark PDF.
Frequently Asked Questions
Yes. There's no signup, no trial, and we never add a watermark of our own. There are no daily limits — only a 200 MB cap per file.
No. The watermark is added locally in your browser using pdf-lib. Your PDF and logo never leave your device, and closing the tab clears everything.
No. This watermark tool works 100% online in any modern browser — Chrome, Safari, Edge or Firefox on Windows, Mac, iPhone and Android. There's nothing to download and no account to create.
Upload your PDF, keep "Text" selected and type your watermark, such as CONFIDENTIAL or DRAFT. Choose position, rotation, size, colour and opacity, then click Add watermark.
Yes. Switch to "Image" and choose a PNG, JPG, WebP or SVG file. Set its width as a percentage of the page, plus opacity, rotation and position. Transparent PNG logos look best.
Yes. Turn on "Repeat" under Tile and the watermark is repeated in a staggered pattern that covers every page — ideal for strong copy protection.
Yes. Set "From page" and "To page" to watermark a range. You can also remove or reorder pages first, and add more PDFs to watermark them together.
The watermark is stamped onto the page content, so it shows in every PDF viewer and when printed. It isn't locked, though — someone with PDF editing software could still remove it.