Compress PDF
Reduce your PDF file size online for free. Fast, secure, no quality loss.
How to Compress PDF Files
- Upload your PDF file above
- Choose compression level
- Download your compressed PDF
Why Use Our PDF Compressor?
- Free: No limits, no signup
- Private: Files auto-deleted after 1 hour
- Fast: Powered by Ghostscript — the industry standard PDF engine
- Quality: Choose from 4 compression levels to balance size vs quality
Frequently Asked Questions
- How do I compress a PDF online for free without losing quality?
- Upload your PDF above and select "Balanced" or "Best quality" compression level. Ghostscript optimizes the file structure while preserving visual quality. For maximum quality retention, use the "Prepress" setting.
- How to compress PDF below 500 KB or 2 MB?
- Select "Maximum compression (smallest)" for the smallest file size. If your PDF contains images, compression is most effective. Large text-heavy PDFs may not compress below 2 MB — try compressing any embedded images first.
- Is it safe to compress PDF online?
- Yes. Files are transferred over encrypted HTTPS and automatically deleted from our servers after 1 hour. We never access or store your documents.
- What is the best free PDF compressor?
- Our free PDF compressor uses Ghostscript — the same professional-grade engine used by enterprise solutions. It offers 4 compression levels and processes files up to 100MB with no signup required.