Compress PDF Under 1MB Free Online
Reduce PDF file size by up to 90% while maintaining readability. 100% client-side processing.
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How Our PDF Compression Works
Our advanced compression algorithm re-renders each page of your PDF at an optimized resolution, then rebuilds the document with compressed JPEG images. This approach achieves much better compression ratios than simple PDF optimization tools.
Compression Levels Explained
- Low Compression: Maintains high quality at 144 DPI with 85% JPEG quality. Best for documents you need to print.
- Medium Compression: Balanced approach at 108 DPI with 70% quality. Ideal for most use cases including email attachments and online uploads.
- High Compression: Aggressive compression at 86 DPI with 50% quality. Perfect for getting under size limits while keeping text readable.
- Maximum Compression: Extreme compression at 72 DPI with 30% quality. Use when file size is critical and some quality loss is acceptable.
100% Private & Secure
All processing happens directly in your browser. Your PDF files are never uploaded to any server. This makes our tool completely secure for sensitive documents like government forms, financial statements, and personal identification documents.
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