Getting Started

Welcome to超级PDF文件转换大师! This is a powerful open-source PDF processing tool.

Main Features

• PDF Operations - Merge, split, rotate, compress, crop, extract
• File Conversion - Support conversion between multiple formats
• Security Features - Watermark, password protection, digital signature
• Advanced Features - Compare, analyze, optimize, repair
• Utility Tools - Page numbering, image extraction, etc.

PDF Operations Guide

PDF Merge

Merge multiple PDF files into one document

1. Select PDF files to merge
2. Adjust file merge order
3. Select merge options (add bookmarks, optimize size, etc.)
4. Click "Merge PDF" button to complete operation

PDF Split

Split PDF document into multiple files

1. Select PDF file to split
2. Choose split type (by page range, page count, file size, etc.)
3. Set split parameters
4. Click "Split PDF" button to complete operation

File Conversion Guide

Supported Formats

Security Features Guide

Password Protection

Add password protection to PDF documents

1. Select PDF file to protect
2. Set user password (required to open PDF)
3. Set owner password (required to edit PDF)
4. Choose permission settings
5. Click "Add Password Protection" button

Add Watermark

Add text or image watermarks to PDF documents

1. Select PDF file to add watermark
2. Choose watermark type (text or image)
3. Set watermark content and style
4. Adjust watermark position and transparency
5. Click "Add Watermark" button

Advanced Features Guide

PDF Comparison

Compare differences between two PDF documents

1. Select first PDF file
2. Select second PDF file
3. Choose comparison type and options
4. Click "Compare PDF" button to view results

PDF Analysis

Deep analysis of PDF document structure and content

1. Select PDF file to analyze
2. Choose analysis type (structure, content, images, fonts, etc.)
3. Set analysis options
4. Click "Analyze PDF" button to view results

Troubleshooting Guide

Common Issues