Reduce PDF file size while maintaining quality. Free, secure, and fast compression with advanced optimization settings.
PDF Compressor
Features
Examples
User Guide
Tips
📄 PDF File Compressor
📄
Drag & drop your PDF files here
or click to select files
Maximum file size: 100MB per file
File Name:-
File Size:-
Page Count:-
Compressing...
Original Size
-
Compressed Size
-
-
Low: Better quality, High: Smaller file size
5%65%95%
LowMediumHigh
🚀 Advanced Features
🗜️
Advanced Compression
AI-powered algorithms can reduce PDF file sizes by up to 95% while maintaining quality.
Optimized compression preserves text clarity and image details.
🔒
Secure Processing
Files are processed locally in your browser, never uploaded to servers. 100% privacy and security guaranteed.
Data is automatically deleted after processing.
⚡
Fast Processing
Optimized algorithms compress large PDF files in seconds.
Batch processing support for multiple files simultaneously.
🎯
Customizable Settings
Adjust compression level, quality ratio, and image quality settings according to your needs.
Fine-tune the balance between file size and quality.
📱
Mobile Friendly
Responsive design works perfectly on all devices. Same quality experience on
phones, tablets, and desktops.
🆓
Completely Free
100% free to use. No registration required, no watermarks added, no file count limits.
Professional-quality results every time.
📋 Compression Examples
📊
Business Report (5.2MB → 0.8MB)
Original: 45-page PDF converted from PowerPoint Compression: 85% size reduction Result: Perfect for email attachments, text quality preserved
📚
E-Book (28.5MB → 3.2MB)
Original: 200-page book with high-resolution images Compression: 89% size reduction Result: Reading quality maintained, fast download
📝
Resume (850KB → 180KB)
Original: CV with professional photos and graphics Compression: 79% size reduction Result: Optimized size for job applications
🏗️
Technical Drawing (15.3MB → 2.1MB)
Original: Detailed architectural plan exported from CAD Compression: 86% size reduction Result: Drawing details preserved, easy sharing
📋
Legal Document (12.1MB → 2.8MB)
Original: 85-page file from scanned documents Compression: 77% size reduction Result: Perfect for archiving, text readability maintained
🎨
Portfolio (45.2MB → 6.8MB)
Original: High-resolution design work samples Compression: 85% size reduction Result: Optimized for web sharing, color quality preserved
📖 User Guide
📁
1. File Selection
• Click "Choose Files" button or drag and drop files
• Select multiple PDF files for batch processing
• Maximum file size: 100MB per file
• Supported format: PDF (.pdf) only
⚙️
2. Settings Configuration
• Compression Level: Low (quality priority), Medium (balanced), High (size priority)
• Quality Setting: 5-95% overall quality control
• Image Quality: Low, Medium, Good, High options
🚀
3. Compression Process
• Click "Compress PDF" button to start
• Progress bar shows processing status
• Processing time varies with file size
• All processing happens in your browser (offline)
💾
4. Download Results
• Size comparison is displayed after processing
• Savings percentage is shown
• Click "Download Compressed PDF" button
• File is automatically downloaded
🔄
5. Process More Files
• Use "Clear All" button to start fresh
• Or refresh the browser page
• Previous settings are remembered
• Select multiple files for batch processing
❓
Troubleshooting
• File won't upload: Check PDF format
• Process taking long: Try reducing file size
• Getting errors: Refresh browser
• Poor quality: Increase quality settings
💡 Professional Tips
🎯 Maximum Compression
Use "High" compression with 5-15% quality for maximum size reduction. This can achieve
up to 95% compression for image-heavy documents while keeping text readable.
📁 Extreme File Size Optimization
For files larger than 100MB, use quality settings below 30% combined with "High" compression.
This aggressive approach can reduce files by 90%+ while maintaining document usability.
🖼️ Image Compression Strategy
Set image quality to "Low" for documents with photos to achieve maximum compression.
Technical drawings may need "Medium" quality. Text-only documents work with any setting.
⚡ Aggressive Processing
Use quality settings as low as 5% for archival documents where file size is more important
than visual quality. This can achieve compression ratios of 95%+ in many cases.
🔒 Security & Privacy
Files are processed only in your browser, works even offline.
No data is sent to servers, ensuring complete privacy and security.
📱 Mobile Optimization
When processing large files on mobile, use "High" compression with quality below 25%
to reduce processing time and ensure optimal performance on limited hardware.
💡 Professional Workflow
Target max 5MB for email attachments, max 2MB for web uploads.
Use 10-20% quality for archiving, 40-60% for presentations, 70%+ for print documents.
🔄 Batch Processing Efficiency
When compressing multiple files, start with the most aggressive settings (High + 5% quality).
You can always reprocess with higher quality if needed, but maximum compression is often sufficient.