Watermark PDF

PDF Management

Stamp text or an image watermark across every page of a PDF.

Tool Overview & Guide

What is Watermark PDF?

Watermark PDF stamps a text label or an image across every page of your document — perfect for marking files CONFIDENTIAL, DRAFT, or with your own logo. You control the wording, colour, size, opacity, rotation, and whether it sits once in the centre or repeats diagonally across the whole page, with a live preview of the first page as you tweak. It runs entirely in your browser using pdfjs for the preview and pdf-lib to write the watermark, so your PDF is never uploaded.

Technical Specifications & Supported Formats
Processing Engine:pdf-lib, PDF.js & WASM Vector Engine
Privacy & Security:100% In-Browser (Zero File Upload)
Supported Formats:PDF, DOCX, XLSX, TXT, PNG, JPG
Max File Limit:500 MB

How to use Watermark PDF

3 simple steps to complete your task directly in your browser:

  1. Add your PDF

    Drop a PDF onto the page or click to browse. The first page renders as a live preview you'll watermark against.

  2. Choose text or image

    Pick a text watermark and type your wording, or switch to Image and upload a PNG or JPG — a transparent PNG logo works best.

  3. Style it

    Adjust the font size and colour (or image size), then set the opacity and rotation. The preview updates instantly so you can dial in a subtle or bold look.

Common uses

  • Mark a document CONFIDENTIAL, DRAFT, or COPY before sharing
  • Stamp your company logo across a proposal or report
  • Add a 'SAMPLE' or 'SPECIMEN' overlay to a template
  • Brand a PDF portfolio or invoice with your name
  • Deter copying by tiling your name across every page
  • Label internal documents so they aren't mistaken for final versions

Why choose VersaTools

100% private

Your files are processed inside your browser and are never uploaded to a server.

Free, no account

No sign-up, no watermark, no paywalled “premium” tier. Just open a tool and use it.

Instant

No upload, no queue, no server round-trip — work starts the moment you drop a file.

Runs in your browser

Built on open web standards. Works on any modern desktop browser, nothing to install.

No upload size caps

Nothing leaves your device, so there’s no server file-size limit — only your machine’s memory.

Yours to keep

Results download straight to your device in clean, standard file formats.

Frequently asked questions

Related tools