PDF Compressor - Free Online Tool | PivaBox

Compress PDF files — reduce file size by optimizing streams and removing unused objects

How to Use PDF Compressor

  1. Upload a PDF file by clicking the upload area or dragging and dropping a file
  2. Select a Quality Level and optionally check Remove Metadata to strip document metadata
  3. Click Compress to optimize the PDF, then click Download to save the compressed file

Frequently Asked Questions

Is PDF Compressor free?

Yes, PivaBox PDF Compressor is completely free to use. All processing runs locally in your browser.

Are my PDF files uploaded to a server?

No. All PDF compression happens entirely in your browser using <code>pdf-lib</code>. Your files never leave your device, ensuring your documents stay private and secure.

How much can I reduce file size?

File size reduction depends on the PDF content. PDFs with large embedded images or uncompressed streams can achieve 50-80% reduction. Text-heavy PDFs typically see 20-40% reduction. The tool uses object stream compression and metadata removal to optimize file size without affecting visual quality.