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Click to upload PDF file or drag & drop
Supports PDF files up to 100MB
Compression Quality Settings
High Quality
Minimal compression, best for printing
Medium Quality
Balanced compression and quality
Low Quality
Maximum compression, smallest file
Custom
Advanced settings for experts
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File Name
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Original Size
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Pages
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File Type
Preparing compression...
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Original Size
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Compressed Size
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Size Reduction
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Quality Score

Features & Capabilities

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Smart Compression
Advanced algorithms reduce file size while maintaining optimal quality for your specific use case.
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Fast Processing
Lightning-fast compression powered by optimized algorithms and efficient processing.
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Secure & Private
All processing happens locally in your browser. Your files never leave your device.
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Quality Control
Multiple quality settings to balance file size and visual quality according to your needs.
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Mobile Friendly
Responsive design that works perfectly on desktop, tablet, and mobile devices.
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Completely Free
No registration, no watermarks, no file size limits. Completely free to use forever.

About PDF Compression

Our free online PDF compression tool is designed to help you reduce PDF file sizes while maintaining optimal quality. Whether you need to compress PDFs for email attachments, web uploads, or storage optimization, our tool provides the perfect balance between file size reduction and visual quality preservation.

đź”’ Privacy & Security

All PDF compression happens locally in your browser. Your files are never uploaded to our servers, ensuring complete privacy and security of your documents.

Compression Quality Options:

Quality Level Compression Ratio Best For File Size Reduction
High Quality Low compression Printing, archival 10-30%
Medium Quality Balanced compression General use, sharing 30-60%
Low Quality High compression Web upload, email 60-80%
Custom User-defined Specific requirements Variable

How PDF Compression Works:

PDF compression reduces file size through various optimization techniques including image compression, font subsetting, content stream optimization, and removal of unnecessary metadata. Our tool intelligently applies these techniques based on your selected quality level to achieve the best balance between file size and visual quality.

Common Use Cases:

  • Email Attachments: Reduce PDF size to meet email attachment limits
  • Web Upload: Optimize PDFs for faster website loading
  • Storage Optimization: Save disk space while preserving document quality
  • Document Sharing: Make large documents easier to share and download
  • Mobile Viewing: Optimize PDFs for mobile device viewing
  • Archival: Reduce storage costs for document archives

Why Choose Our PDF Compressor?

Unlike other online PDF compressors, our tool prioritizes your privacy by processing files locally in your browser. This means faster processing, better security, and no file size limits. The tool supports all PDF versions and maintains document integrity while achieving significant size reductions.

Technical Features:

  • Support for all PDF versions (1.0 to 2.0)
  • Lossless and lossy compression options
  • Image optimization and resampling
  • Font subsetting and optimization
  • Metadata cleanup and optimization
  • Content stream compression
  • Batch processing capabilities
  • Real-time compression preview