Is my file uploaded to a server?

No. All processing happens inside your browser.

Can I use non-Latin text in the watermark?

Yes. A bundled font ensures non-Latin text renders correctly.

Can I use an image watermark?

Only text watermarks are supported at the moment.

Can I watermark only some pages?

It applies to all pages. If you need a subset, split the PDF first.

💧 PDF Watermark

Add a text watermark to every page of a PDF.

Drop your PDF file here

Click or drag a file

🔒 Uploaded files are never sent to a server — processed entirely in your browser

How to add a watermark

Select the PDF file.
Set the text, color, size, opacity and angle.
Press Add Watermark and the file is saved.

Watermark options

Item	Details
Content	The text you enter is tiled across every page
Opacity	Adjustable 5–100% (default 20%) — keep it light enough to read through
Scope	Applied identically to all pages of the document

💡 Why documents need a watermark

Marking a document with "CONFIDENTIAL," a company name, or "do not distribute" makes ownership and authorization clear if it's ever leaked or copied without permission.

💧 Subtle by design: Lower the opacity to keep the watermark unobtrusive without hurting readability.
🎨 Flexible styling: Adjust color, size and angle — from a large diagonal stamp to a small discreet mark.
🌐 Non-Latin text supported: A bundled font ensures non-Latin watermark text renders correctly.

📌 Where is a watermark useful?

Marking copyright — add "Confidential" or "Copyright" text to distributed material to discourage unauthorized copying.
Marking drafts — a "DRAFT" watermark clearly separates review copies from the final version.
Adding a company name — stamp your company name across proposals and reports for branding.
Tracing leaks — embed a recipient's name or distribution number so a leaked copy can be traced back.

✨ How to add one without it looking heavy-handed

Lowering opacity to 20–30% keeps the watermark visible without obscuring the text underneath.
A diagonal angle (45°) means the mark still shows up in copies or screenshots.
A light gray or muted red tone that contrasts with the body text usually works well.

🔒 Can I remove a watermark afterward?

A watermark added by this tool is baked directly into the saved PDF, so removing it later requires the original file. Keep a copy of your PDF before adding a watermark, just in case.

📖 Guide: How to Add a Watermark to a PDF →

Frequently asked questions

Is my file uploaded to a server?: No. All processing happens inside your browser.
Can I use non-Latin text?: Yes. A bundled font ensures non-Latin text renders correctly.
Can I use an image watermark?: Only text watermarks are supported at the moment.
Can I watermark only some pages?: It applies to all pages. If you need a subset, split the PDF first.