PDF Text Watermark Remover｜PDF水印文字移除工具

English | 中文说明

A powerful desktop application that intelligently removes text-based watermarks from PDF files while preserving the original content. The application features a user-friendly GUI and supports customizable watermark detection.

Features

• 🔍 Smart watermark detection based on customizable keywords
• 🗑️ Selective removal of text watermarks without affecting document content
• 🖼️ Handles both text and form-based watermarks
• 🎯 Preserves document quality and formatting
• 🔧 User-friendly graphical interface
• ⚙️ Customizable watermark keywords
• 📊 Detailed watermark detection reports
• 💾 Batch processing support

Quick Start

Method 1: Using Pre-built Executables (Recommended)

1. Download the latest release for your platform from the releases page:

   • Windows: PDF-Watermark-Remover.exe
   • macOS: PDF-Watermark-Remover.app

2. Run the application:

   • Windows: Double-click the .exe file
   • macOS: Double-click the .app file

     Note: If you see "app can't be opened" on macOS, follow these steps:

     1. Find the app in Finder
     2. Control-click the app icon
     3. Choose "Open" from the menu
     4. Click "Open" in the dialog box

     Or:

     1. Open "System Preferences" > "Security & Privacy"
     2. Click the "General" tab
     3. Click the lock icon and enter your password
     4. Click "Open Anyway"

Method 2: Installing from Source

1. Ensure you have Python 3.7 or higher installed
2. Clone the repository:

git clone https://github.com/yourusername/pdf-watermark-remover.git
cd pdf-watermark-remover

3. Create a virtual environment (recommended):

python -m venv venv
source venv/bin/activate  # On Windows: venv\Scripts\activate

4. Install dependencies:

pip install -r requirements.txt

5. Run the application:

python gui.py

Building from Source

To create your own executable:

python build.py

The executable will be created in the dist directory.

Usage Guide

1. After launching, the interface is straightforward:

   • File selection area at the top
   • Progress display in the middle
   • Function buttons at the bottom

2. Basic workflow:

   • Click "Browse" to select your PDF file
   • Click "Check Watermarks" to preview watermarks
   • Click "Remove Watermarks" to process
   • Choose where to save the processed file

3. Watermark keyword management:

   • Click "Manage Keywords" to open settings
   • Add or remove keywords (one per line)
   • Supports both English and other languages
   • Click "Save" to apply changes

Default Watermark Keywords

The application comes with pre-configured keywords for common watermarks:

- Review Copy
- University Press
- Copyright Material
- Review Only
- Not for Redistribution
- International

Acknowledgments

• pikepdf for PDF processing
• tkinter for the GUI framework
• gaoconghui

License

This project is licensed under the MIT License - see the LICENSE file for details.