How to Add a Watermark to a PDF (Text or Image)

A watermark marks a document as Draft, Confidential, or Copy, or brands every page with your logo. You can add one to a PDF for free in your browser.

Text watermark

1. Open your PDF in the editor and open Tools.
2. In the Watermark section, choose Text and type a word like DRAFT or CONFIDENTIAL.
3. Adjust the opacity, tilt angle, size, and color. A light, 45° diagonal watermark is the classic look.
4. Click Apply — it's stamped on every page — then download.

Image watermark

Switch to Image mode to use a logo instead. Choose a PNG or JPG, set the size as a percentage of the page width, and lower the opacity so it sits softly behind your content. This is perfect for company branding.

Tips

• Keep opacity low (10–25%) so the watermark doesn't obscure the text.
• Use a diagonal angle for Draft/Confidential stamps so they're clearly overlays.
• Apply last, after merging and reordering pages.

Watermark vs. header

A watermark sits behind or across your content on every page. If you just need a line of text at the top or bottom, a header or footer is cleaner — see page numbers, headers & footers.

Free and private

Watermarking runs on your device, so your document is never uploaded. Add watermarks to as many PDFs as you like, free.

Open the editor and watermark your PDF now.