Local processing

Compress PDFs.Keep them on your device.

Reduce file size while preserving readability. Compression starts as soon as you choose a file.

Processed locally · No file upload · No sign-up

Compression level

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Focused PDF compression

Clear controls for file size, readability, and local processing

Advanced Compression

Choose screen, ebook, printer, or prepress settings to balance output size and visual fidelity while preserving searchable text.

Local by Design

Standard PDF files are processed in your browser and are not uploaded to CompressMyPDF servers.

Quality Preservation

Maintain document quality and readability while significantly reducing file size.

Frequently Asked Questions

Everything you need to know about our PDF compression service

Free Browser-Based Local PDF Compression Tool

CompressMyPDF uses WebAssembly to compress PDFs in your browser. Standard files are not uploaded to CompressMyPDF, making the tool suitable for documents you prefer to keep on your device.

  • Compress PDF files up to 500MB for free
  • Maintain document quality and formatting
  • No registration required
  • Instant PDF compression online

Why Choose Our PDF Compressor?

Our advanced PDF compression algorithm intelligently reduces file size while preserving the quality of text, images, and formatting. Ideal for:

  • Reducing PDF size for email attachments
  • Optimizing documents for web uploads
  • Saving storage space on your devices
  • Compressing scanned PDF documents
CompressMyPDF - 100% Local Browser-Based PDF Compression