Add Watermark
Add custom text or image watermarks to your PDFs. Perfect for branding, copyright protection, or marking documents as drafts. Control position, opacity, rotation, and apply to all or specific pages.
or Drag & drop files here
Supported formats: .pdf, application/pdf
Professional PDF Watermark Tool
Add custom text or image watermarks to your PDF documents with full control over position, opacity, rotation, and styling. Our browser-based tool processes files securely on your device, perfect for branding, copyright protection, or marking documents as confidential, draft, or approved.
Key Features:
- Add text or image watermarks with custom styling
- 9 position presets plus custom placement options
- Adjustable opacity, rotation, and size controls
- Apply to all pages or select specific page ranges
- 100% client-side processing for complete privacy
- Batch watermark multiple PDF files simultaneously
How to add watermarks to PDFs:
- 1
Click "Select PDF Files" or drag and drop your PDFs
- 2
Choose watermark type: text or image
- 3
Customize text/image, position, opacity, and rotation
- 4
Click "Add Watermark" to apply to your PDFs
- 5
Download your watermarked PDF files
Your Privacy is Protected
All conversions happen locally in your browser. Your files never leave your device and are automatically deleted when you close this page.
Frequently Asked Questions
A watermark is text or an image overlaid on PDF pages to identify ownership, protect copyright, or mark document status (like DRAFT or CONFIDENTIAL). It's visible but doesn't interfere with readability.
Text watermarks are simple and effective for labels like 'CONFIDENTIAL' or 'DRAFT'. Image watermarks are better for logos, signatures, or complex branding. Both support opacity and positioning.
Yes! Use the opacity slider to make watermarks semi-transparent. 50% opacity is a good balance - visible but not distracting. Lower opacity creates subtle watermarks, higher opacity ensures visibility.
Yes, upload up to 100 PDFs and apply the same watermark to all files in one batch. Perfect for adding company logos or copyright notices to multiple documents simultaneously.
Watermarks added with this tool become part of the PDF content. They're permanent and cannot be easily removed, making them effective for copyright protection. Always keep original files as backups.
Your Privacy is Our Priority
Unlike other PDF tools, we process your files directly in your browser using WebAssembly technology. This means your sensitive documents never leave your device.
Browser Processing
Processing happens in your browser
No File Uploads
No files uploaded to our servers
No Storage
We don't permanently store your files
Complete Privacy
Your files never leave your device during processing
100% Privacy Guarantee
We use cutting-edge WebAssembly technology to process your PDFs entirely within your browser. No uploads to our servers, no data collection, no privacy concerns. Just pure, local processing power.
How Our Privacy-First Technology Works
WebAssembly Processing
We use WebAssembly (WASM) to run PDF processing libraries directly in your browser, eliminating the need to upload files to external servers.
Local Storage Only
Files are temporarily stored in your browser's memory during processing and automatically cleared when you close the tab or complete the task.
No Data Collection
We don't track, store, or analyze your file contents. Our analytics only measure tool usage patterns, not personal data.
GDPR Compliant
Our privacy-first approach means we're automatically compliant with GDPR, CCPA, and other privacy regulations worldwide.