Is it safe to watermark a PDF online?

Yes — and ours is safer than most. Many free online tools quietly upload your files to their servers to do the work. We don't. Everything happens inside your browser on your own device, so your files never reach the internet. There's no upload step, no server copy, and no way for us (or anyone else) to see what you're working on.

Are my files uploaded to a server?

No. There's no server-side processing here. The whole tool is a tiny app that runs in your browser — we don't even have a server that could receive your files. You can confirm this by opening your browser's network tab while you use the tool: nothing leaves your device.

Do I need to sign up or pay?

No. There's no account, no email collection, no credit card. The tool is free to use as much as you want, on as many files as you want. We're supported by a few unobtrusive ads on the page — not by your data.

Will the watermark be visible in print?

Yes — it's part of the page content, identical to print or screen.

Can I tile the watermark?

Yes — toggle "Tile across page" for a repeated grid pattern.

How do I make a draft watermark?

Use "DRAFT" as text, large font (~80pt), 20% opacity, 45° angle, centred.

Add Watermark to PDF

Add a text or image watermark to every page. Pick from 9 anchor positions, control opacity and angle, or tile across the whole page.

Features

Text watermark with adjustable font size, opacity, and angle
Image watermark (PNG, JPEG)
9-point position anchor (corners, edges, centre)
Tile mode for a repeated pattern
Applied to every page in one operation

How to add watermark to pdf

Drop the PDF — Drag the document you want to watermark.
Pick text or image — Type your watermark text, or upload a PNG/JPEG.
Choose position — Click one of the 9 anchor positions. Centre is the default.
Apply — The watermarked PDF downloads.

Frequently asked questions

Is it safe to watermark a PDF online?: Yes — and ours is safer than most. Many free online tools quietly upload your files to their servers to do the work. We don't. Everything happens inside your browser on your own device, so your files never reach the internet. There's no upload step, no server copy, and no way for us (or anyone else) to see what you're working on.
Are my files uploaded to a server?: No. There's no server-side processing here. The whole tool is a tiny app that runs in your browser — we don't even have a server that could receive your files. You can confirm this by opening your browser's network tab while you use the tool: nothing leaves your device.
Do I need to sign up or pay?: No. There's no account, no email collection, no credit card. The tool is free to use as much as you want, on as many files as you want. We're supported by a few unobtrusive ads on the page — not by your data.
Will the watermark be visible in print?: Yes — it's part of the page content, identical to print or screen.
Can I tile the watermark?: Yes — toggle "Tile across page" for a repeated grid pattern.
How do I make a draft watermark?: Use "DRAFT" as text, large font (~80pt), 20% opacity, 45° angle, centred.