Can I place the watermark behind the text?
Yes, select "Behind Content" so the watermark acts as an authentic background security imprint without hiding legibility.
● 100% In-Browser Memory • Zero Server Uploads
Add Text & Image Watermark to PDF
Stamp customized text watermarks ("CONFIDENTIAL", "DRAFT", company name) or logos with fine-tuned opacity, angle, and 45° repeating grid.
Select PDF File or Drag & Drop Here
Files are processed entirely in local device RAM. Supported: .pdf
Quick Answer & Overview
Apply custom text or logo watermarks across PDF pages. CrispPDF embeds watermark objects into the `/ExtGState` transparency dictionary, allowing adjustable opacity, rotation angles, and repeatable patterns.
How to Use Watermark PDF
- 1 Select or drop your PDF document directly into the tool workspace.
- 2 Configure your preferred options or let CrispPDF optimize automatically.
- 3 Click Process to run the operation instantly inside your browser RAM and save your file.
Technical Specifications
Architecture
WebAssembly (WASM)
Privacy Guarantee
Zero Server Uploads
Max File Size
100 MB
Standard
ISO 32000-1