PDF Watermark

by Jack Liu · Tools

Manifest V3 Free

View in Chrome Web Store Data as of 20 Oct 2026

Add text watermarks to PDFs locally in your browser. Files never leave your machine.

Users

+11 in 30 days

Rating

0.0 / 5

unchanged in 30 days

Ratings

0 in 30 days

Store rank

#128K

#106K among extensions

Version

0.1.0

updated 4 May 2026

Users

monthly, 6 months

Latest, 20 Oct 2026: 33 usersMove the mouse over the chart for any month

Ratings count

monthly, 6 months

Latest, 20 Oct 2026: 0 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About PDF Watermark

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