PDF Watermarker

Add text or image watermarks to PDFs with position, rotation, opacity and per-page control — fully in your browser.

📄 Drop a PDF here or click to browse One PDF · max 200 MB

What is this PDF watermarker?

A free browser-based PDF watermarker that stamps text or image watermarks onto your pages — with center, corner, diagonal or tiled placement, rotation, opacity, colour, font and a live preview of page 1. Choose all pages, the first, or a custom range, then download. Nothing is uploaded.

How do I add a watermark to a PDF online without uploading it?

Drop your PDF, choose text or image, set options, click Apply.

Key features

Text or image: Type any text (Helvetica, Times or Courier) or upload a transparent PNG / JPG logo.
Live preview: See the watermark on page 1 in real time as you change position, rotation, opacity, colour and size.
Flexible placement: Center, four corners, diagonal, or a repeating tile with adjustable density; per-page selection (all, first or a custom range).
Private & offline: pdf-lib and PDF.js run in your browser, so confidential and draft documents are never uploaded.

How to use it

Drop a PDF, pick Text or Image, then set the watermark, position, rotation, opacity, colour, font and which pages to stamp — the live preview of page 1 updates as you go. Name the output and click Apply watermark to download.

Frequently asked questions

Uploaded?

No - local pdf-lib

Transparent logo?

Yes - PNG alpha preserved

Cut off?

Reduce font size or use diagonal

Only first page?

Yes - via page selector

Built on pdf-lib (MIT), preserves your styling exactly.