Add Watermark to PDF
Add a text watermark to every page of a PDF for free. Customize font, opacity, and position in your browser.
How It Works
Quick, Secure & Frictionless in 3 Steps
1. Select or Drop File
Choose your PDF from local storage or drag it into the active workspace. Files load instantly in local device memory.
2. Fine-Tune Parameters
Adjust rotation, select pages, choose compression target, or set watermark positions with real-time interactive previews.
3. Instant Process & Save
Click execute and download your ready output file instantly. 100% private WebAssembly processing with zero wait times.
100% Local RAM
Zero Server Uploads
WebAssembly Speed
Instant Processing
ISO 32000 Standard
Preserves Fonts & Layout
Unlimited & Free
No Watermarks or Caps
Watermark PDF Comprehensive Guide & Best Practices
How to Add Watermark to PDF for Free?
Protect your intellectual property and brand your documents by adding text or image watermarks. Watermarks prevent unauthorized distribution of drafts, design proofs, invoices, and certificates. WeLovePDF allows you to configure, position, and preview watermarks in real-time inside your browser memory with zero uploads.
Steps to Watermark a PDF:
- Upload PDF: Select the file you wish to brand.
- Configure: Enter your text, customize colors, opacity, and choose a position.
- Apply: Click "Run Tool" to overlay the watermark pattern on all pages.
- Download: Save your brand-marked PDF document.
Watermark Styling Tips:
Use a diagonal rotation angle (like 45°) to prevent users from cropping or hiding the watermark. Adjust the opacity slider to 20-30% to keep the background text readable while maintaining clear copyright markings. You can choose to apply the watermark pattern to all pages, only selected page indexes, or odd/even pages.