Is the watermark removable?

It is drawn into the page content, so casual viewers cannot toggle it off, though determined editing tools can still alter any PDF.

Can I watermark only some pages?

This tool stamps every page; use the PDF Page Organizer to split out a range first if you need partial coverage.

Does it support images or logos?

Currently text watermarks only, which keeps the output vector-sharp and the file size small.

Are my documents uploaded?

No, watermarking happens entirely in your browser with pdf-lib.

Which fonts are used?

Helvetica Bold, a standard PDF font, so the file opens identically everywhere without embedding extra fonts.

PDF Watermark Adder

Stamp text watermarks across every page of a PDF.

Works Offline

Privacy First

No Login

No API

File API

Blob

About the PDF Watermark Adder

Add a CONFIDENTIAL, DRAFT or custom text watermark to every page of a PDF with control over placement (centered, tiled, footer or corner), font size, rotation, colour and opacity. The watermark is drawn as real vector text so it stays crisp at any zoom and prints cleanly.

Examples

Confidential stamp

contract.pdf + "CONFIDENTIAL" centered at 20% opacity

Output

contract-watermarked.pdf

Tiled draft mark

spec.pdf + "DRAFT" tiled at 45°

Output

spec-watermarked.pdf with repeating marks

Keyboard shortcuts

Copy the main outputCtrl / ⌘ + Shift + C
Download the resultCtrl / ⌘ + S
Share this toolCtrl / ⌘ + Shift + S
Reset the inputsAlt + R
Open the tool search paletteCtrl / ⌘ + K

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Frequently asked questions

Version 1.0.0 · Updated 2026-08-13 · Runs entirely in your browser