PDF Tools - Offline Merger & Compressor

Complete offline PDF toolkit with merge and compression capabilities.

🌐 Web Interface (Basic)

Files: index.html, styles.css, app.js

Features:

• ✅ Merge multiple PDFs
• ✅ Basic compression (structural optimization)
• ✅ Works in browser
• ⚠️ Limited compression (5-20% reduction)

How to Use:

1. Open index.html in any browser
2. Use Merge or Compress tabs

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🐍 Python Compressor (Advanced)

File: compress_pdf.py

Features:

• ✅ Real compression - Compresses images within PDFs
• ✅ Target size - Reduces to specific KB size
• ✅ Automatic quality adjustment - Tries different compression levels
• ✅ Offline - No internet required
• ✅ 50-90% reduction possible on image-heavy PDFs

Installation:

1. Install Python (if not installed): https://www.python.org/
2. Run installer:

   Double-click: install.bat
   

   OR manually:

   pip install -r requirements.txt
   

Usage:

Method 1: Command Line

# Maximum compression
python compress_pdf.py document.pdf

# Compress to specific size (500 KB)
python compress_pdf.py document.pdf 500

Method 2: Drag & Drop

1. Drag PDF file onto compress.bat
2. Enter target size when prompted (or press Enter for max compression)

Method 3: Batch File

compress.bat document.pdf 500

Examples:

# Compress presentation.pdf to maximum
python compress_pdf.py presentation.pdf

# Compress report.pdf to exactly/below 1000 KB (1 MB)
python compress_pdf.py report.pdf 1000

# Compress images.pdf to 200 KB
python compress_pdf.py images.pdf 200

Output:

• Original: document.pdf
• Compressed: document_compressed.pdf

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📊 Comparison

Feature	Web Interface	Python Compressor
Offline	✅ Yes	✅ Yes
Installation	None	Python + packages
Merge PDFs	✅ Yes	❌ No (use web)
Image Compression	❌ No	✅ Yes
Target Size	⚠️ Limited	✅ Accurate
Typical Reduction	5-20%	50-90%

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🎯 When to Use What:

• Merging PDFs → Use Web Interface
• Light compression → Use Web Interface
• Heavy compression → Use Python Compressor
• Target specific size → Use Python Compressor
• Image-heavy PDFs → Use Python Compressor

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📁 File Structure:

pdf_merger_offline/
├── index.html          # Web interface
├── styles.css          # Web styling
├── app.js             # Web logic
├── compress_pdf.py    # Python compressor (POWERFUL)
├── requirements.txt   # Python dependencies
├── install.bat        # Auto-installer
├── compress.bat       # Drag-drop helper
└── README.md          # This file

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🚀 Quick Start:

1. For Merging: Open index.html
2. For Compression:
   • Install: install.bat
   • Use: python compress_pdf.py yourfile.pdf 500

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⚠️ Troubleshooting:

"Python not found"

• Install Python from https://www.python.org/
• Check "Add to PATH" during installation

"Module not found"

• Run install.bat again
• Or: pip install -r requirements.txt

"Cannot compress to target size"

• PDF may have non-compressible content
• Try lower quality (script auto-adjusts)
• Some PDFs have minimum sizes

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💡 Tips:

• Start with target size slightly higher than needed
• Image-heavy PDFs compress better
• Text-only PDFs have limited compression
• Lower quality = smaller size (quality: 10-100)

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Made with ❤️ for offline PDF processing