ClearMark PDF is a free, browser-based PDF watermark and logo remover that intelligently selects the best cleaning method automatically.
The tool runs entirely in your browser with no login and no server processing.
- Upload PDF files instantly
- Automatic watermark/logo removal
- Hybrid cleaning engine (smart method selection)
- Preserves text when possible
- Visual fallback cleaning for complex PDFs
- Drag & Drop support
- Progress indicator
- Mobile-friendly interface
- 100% client-side processing
- Privacy-safe (files never leave your device)
ClearMark PDF uses a dual-engine system:
- Analyzes internal PDF structure
- Removes watermark objects directly
- Keeps original text selectable
- Maintains file quality
- Renders pages as images
- Detects light background watermark pixels
- Cleans watermark visually
- Works on nearly all PDFs
The application automatically chooses the best method for each uploaded file.
- HTML5
- CSS3
- JavaScript
- PDF.js (PDF rendering)
- PDF-Lib (structural editing)
- jsPDF (PDF generation)
https://vishalkumar-netizen.github.io/ClearMark-PDF/
- Download or clone repository
- Open
index.html - Upload PDF
- Download cleaned file
No installation required.
All processing happens locally inside your browser.
Your files are never uploaded or stored anywhere.
- Some complex PDFs embed watermark with text layers.
- In such cases, visual cleaning mode is used automatically.
- Results depend on PDF structure.
Contributions, improvements, and suggestions are welcome.
This project is licensed under the MIT License.
