How to Watermark a PDF (Text or Logo)

Add a professional watermark to protect your work. All done locally in your browser.

Watermarking is a polite but firm way to say: please do not copy this. It protects sensitive work, signals ownership, and keeps brand identity visible when files are forwarded. With PDF Smile, you can add text or logo watermarks to every page — or to a specific range — securely in your browser without uploading anything.

When to watermark a PDF

Client drafts: add Draft or Confidential until the final is approved.
Brand consistency: place a subtle logo on proposals or portfolios.
Internal sharing: label training materials and handouts.

How to add a watermark in PDF Smile

Open PDF Smile — Watermark PDF.
Choose text (e.g., CONFIDENTIAL) or upload a transparent PNG logo.
Set size, opacity, position, and angle.
Apply to all pages or a custom range, then export.

Security and privacy

Nothing leaves your device. The entire watermarking process happens inside your browser. Refresh the tab and your session clears immediately — nothing is stored.

Design tips for tasteful watermarks

Keep it readable: 20–30% opacity is usually right for body text behind content.
Diagonal placement: covers more area without overwhelming the page.
Use vector logos: crisp at any size; export as transparent PNG if needed.

Workflow ideas

Merge proposal plus case studies, watermark Confidential, then compress for email.
Prepare classroom materials with a school logo watermark and rotate or delete pages in Organize.

FAQ: watermarking with PDF Smile

Will the watermark be removable? It is baked into the exported pages, which discourages casual copying. For stronger protection, pair with Compress to flatten assets.

Can I watermark only some pages? Yes — choose a range.

Is anything uploaded? No — it all runs in your browser and disappears on refresh.

Protect and present your work

A subtle watermark communicates ownership without getting in the way. Add yours in seconds with PDF Smile and share work confidently.

👉 Add a watermark

Related: Organize pages · Merge PDFs · Compress PDFs