PDF Compress is a free online tool that reduces PDF file size while maintaining acceptable quality. Our browser-based compressor uses advanced techniques to optimize images, remove redundant data, and compress fonts - all on your device without uploading files to a server.

Perfect for compressing large PDFs for email attachments (usually 25MB limit), faster web uploads, reduced storage use, or meeting file size requirements for online forms and applications.

• Multiple compression levels (Low, Medium, High)

• Image quality optimization

• Remove unused resources

• Font subsetting and compression

• Object stream compression

• Real-time size comparison

• No file upload - 100% client-side

• No file size limits

• Free with no watermarks

1. Click 'Select PDF File' to upload

2. View original file size

3. Choose compression level (Low/Medium/High)

4. Click 'Compress PDF' to process

5. Preview compressed result and size reduction

6. Compare original vs compressed size

7. Download optimized PDF

• Email attachments exceeding size limits

• Faster website loading times

• Reduce cloud storage usage

• Meet upload size requirements

• Optimize PDFs for mobile viewing

• Archive documents efficiently

• Share large files more easily

• Improve PDF loading speed

Low Compression: Minimal size reduction (10-20%) with near-original quality. Best for PDFs with important images or diagrams where quality is critical.

Medium Compression: Balanced size reduction (30-50%) with good quality. Recommended for most documents, suitable for general use and email attachments.

High Compression: Maximum size reduction (50-70%) with acceptable quality. Best for text-heavy PDFs or when file size is more important than image quality.