Watermark PDF
Add a text watermark (like DRAFT or CONFIDENTIAL) across every page of a PDF, with adjustable opacity, size and angle — in your browser.
Drop a PDF or click to choose
Stamp a text watermark on every page.
What Is the Watermark PDF?
Watermark PDF stamps custom text — DRAFT, CONFIDENTIAL, your company name, anything — across every page of a PDF. Adjust the opacity so it sits behind your content, set the size, and choose a diagonal or horizontal angle. It's a fast way to mark documents before sharing. Everything runs in your browser; your PDF is never uploaded.
How It Works
Drop in a PDF, type your watermark text, tune the opacity, size and angle, then click Add Watermark to download the stamped file.
When to Use It
Use it to mark drafts, flag confidential or internal documents, brand a proposal, or add a copyright notice before distributing a PDF.
Frequently Asked Questions
- Can I control how faint the watermark is?
- Yes — set the opacity from a faint background stamp to a bold overlay, and pick the size and diagonal/horizontal angle.
- Is my document private?
- Completely — the watermark is applied locally in your browser and nothing is uploaded.
Last reviewed: 2026-06-27