How to Add a Watermark
to a PDF for Free
Stamp CONFIDENTIAL, DRAFT, or your company name across every page — to protect drafts, mark copies, or brand a document. Here's how, free and private, with no upload.
A watermark tells everyone how to treat a document at a glance. "DRAFT" stops someone acting on an unfinished version. "CONFIDENTIAL" sets expectations before the first line is read. Your name or company across a proposal discourages people from passing it off as their own.
You can add one for free in your browser — and, importantly, without the tool sneaking in its own watermark, which many "free" sites do.
Quick Solution: Watermark Your PDF Right Now
Open the free Raha Tools Watermark PDF tool, upload your file, type your text, set opacity and angle, and download. No signup, no added branding, processed on your device.
Open Watermark PDF & StartWhat a Good Watermark Looks Like
The best watermarks are readable but unobtrusive — visible enough to convey the message, faint enough not to block the content. Three settings get you there:
- Opacity — usually 10–30%. Light grey diagonal text is the classic look.
- Angle — a 45° diagonal across the page is hardest to crop out and reads clearly.
- Size — large enough to span the page so it covers the key area.
Step-by-Step: Add a Watermark
Using the free Raha Watermark PDF tool:
1. Upload your PDF
Drag your file in. It's processed locally — nothing is uploaded.
2. Type your watermark text
Enter something like CONFIDENTIAL, DRAFT, SAMPLE, or your name/company.
3. Adjust opacity, angle & size
Tune it with a live preview until it looks right — typically a faint 45° diagonal.
4. Download
Click Download. The watermark is applied across every page, with no extra branding from the tool.
When to Use a Watermark
- Drafts & reviews — mark versions clearly as DRAFT or FOR REVIEW.
- Confidential documents — set a clear handling expectation.
- Samples & proofs — share previews stamped SAMPLE.
- Branding — put your company name on proposals and reports.
A Note on Protection
A watermark is a visual deterrent, not security. To actually restrict who can open or copy a file, add a password with Protect PDF. And if you need to permanently hide information, that's Redact PDF, not a watermark.
| Goal | Use this |
|---|---|
| Mark a document visually (DRAFT, etc.) | Watermark PDF |
| Restrict opening/copying | Protect PDF |
| Permanently hide sensitive text | Redact PDF |
Frequently Asked Questions
How do I add a watermark to a PDF for free?
Open Watermark PDF, upload your file, type your text, set opacity and angle, and download.
Can I watermark all pages at once?
Yes — the watermark is applied across the whole document automatically.
Will the tool add its own branding?
No. Only your text is added — no promo stamp.
Is my file uploaded?
Never. Everything runs locally on your device.