Compress PDFs Online

Reduce PDF file sizes for easier sharing and faster uploads. No quality loss, no signup required.

How to Compress PDF Files Online

Compressly provides a fast and easy way to reduce PDF file sizes. Upload your PDF documents, choose your compression level, and our engine will optimize them while maintaining readability and visual quality.

Why Compress PDFs?

  • Send PDFs via email without exceeding attachment limits
  • Upload documents faster to cloud storage and forms
  • Save disk space on your computer and mobile devices
  • Share documents more easily through messaging apps

Compression Levels Explained

  • Light: Preserves maximum quality with 10-20% size reduction. Ideal for documents with detailed images.
  • Balanced: Optimal compression with 25-40% reduction. Best for general use.
  • Strong: Maximum compression with 50-60% reduction. Perfect for email attachments.

How PDF Compression Works

PDF compression works by optimizing internal structures, removing redundant data, compressing embedded images, and using efficient encoding. Our tool maintains text quality and document structure while significantly reducing file size.