Compress PDF

Reduce PDF file size while maintaining quality

Smart Compression

Choose quality vs size balance

No Upload Required

All processing in browser

Instant Results

See size reduction immediately

About Compress PDF

PDFNinja's Compress PDF tool helps you reduce PDF file size without compromising quality. Our advanced compression algorithms optimize your PDF documents by removing unnecessary data, compressing images, and cleaning up the file structure. Whether you need to reduce file size for email attachments, web upload, or storage optimization, our free online tool delivers excellent results. Choose from compression levels to balance between file size and quality based on your needs.

Key Benefits

  • Up to 80% size reduction
  • Preserve original quality
  • Fast browser-based processing
  • No registration required
  • Secure local processing
  • Free to use

Features

  • Adjustable compression levels
  • Preview compression results
  • Maintain document readability
  • Batch compression support
  • No quality loss option
  • Instant processing

Common Use Cases

  • Reduce file size for email
  • Optimize PDFs for web upload
  • Save storage space
  • Compress scanned documents
  • Reduce large report sizes

Privacy Guaranteed

All processing happens locally in your browser. Your files are never uploaded to any server, ensuring complete privacy and security.