Watermarker Offline is a 100% client-side tool that lets you apply customizable watermarking to images or PDF files, right in your browser — no upload required, no data leaves your machine.
✅ Works entirely offline
✅ Privacy-first (everything runs locally)
✅ Built with HTML, JavaScript, and Bootstrap
✅ Deployable on GitLab Pages
Check out the live version here:
📄 https://watermarker-13b1b0.gitlab.io/
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Document to watermark
Supports images and PDF files. -
Text
Define your custom watermark message. -
Text size
Adjust the font size of the watermark. -
Space between watermark
Control the vertical horizontal and offset gap between watermark. -
Watermark color
Choose any color using a color picker. -
Watermark opacity
Set how transparent your watermark should appear.
- Clone the repo
- Open
index.htmlin your browser - Done! Everything works locally
- Bootstrap 5
- JavaScript
- HTML5
- PDF.js
- PDFKit
- blob-stream
- font-awesome
This project is licensed under the GNU General Public License v3.0.
