Overview
Add text watermarks to PDFs locally in your browser. Files never leave your machine.
PDF Watermark A Chrome extension that adds text watermarks to PDFs entirely in your browser. Files never leave your machine. No upload, no server, no telemetry. Features - Drag-and-drop or click to load a local PDF - Watermark with English, Chinese (simplified), or mixed text - Live preview of the first page - Adjustable parameters: opacity, rotation angle, font size, color - Three layout presets: single (centered), 2×2 grid, 3×3 grid - Output PDF preserves the original content; watermark sits on top of every page - Files up to 100 MB Privacy This extension runs 100% locally: - No network requests of any kind - No data collection or analytics - No background page or service worker watching your activity - The permissions field in manifest.json is empty - All processing (PDF parsing, font embedding, watermark drawing) happens in the popup, in your own Chrome process
Details
- Version0.1.0
- UpdatedMay 4, 2026
- Offered byJack Liu
- Size3.85MiB
- LanguagesEnglish
- Developer
Email
tomato.sliu@gmail.com - Non-traderThis developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.
Privacy
This developer declares that your data is
- Not being sold to third parties, outside of the approved use cases
- Not being used or transferred for purposes that are unrelated to the item's core functionality
- Not being used or transferred to determine creditworthiness or for lending purposes
