How to Compress a PDF
- Upload: Drag and drop your PDF or click the file picker.
- Choose quality: Select High, Medium, or Small compression level.
- Compress & download: Click Compress, then download your optimized PDF.
Compression Levels Explained
- High Quality (prepress): Maximum image fidelity. Best for print-ready documents and professional layouts.
- Medium Quality (ebook): Recommended for most use cases. Good balance between file size and visual quality.
- Small Size (screen): Smallest file size. Images are downsampled. Best for email and web sharing.
Why Use Our PDF Compressor?
- Ghostscript Powered: Industry-standard PDF compression engine used by professionals worldwide.
- Secure: Files are deleted immediately after compression. We never store your documents.
- Fast: Server-side compression is faster and more reliable than browser-based alternatives.
- Free: No registration, no file limits, no hidden costs.
Frequently Asked Questions
Will compression reduce PDF quality?
It depends on the level you choose. High Quality maintains near-original fidelity. Medium reduces image resolution slightly. Small Size downsamples images significantly for maximum compression.
Can I compress password-protected PDFs?
Password-protected PDFs may fail to compress. Remove the password first, then upload the unprotected file.
Does it work on mobile?
Yes. The compressor works on iOS, Android, and tablets through any modern browser — no app installation needed.