Free PDF Compressor Online
Reduce PDF file size up to 90% without losing quality. Fast, secure, and completely free.
Why Choose ThinPDF for PDF Compression?
The best free online PDF compressor with advanced features
100% Secure
All files are automatically deleted after 10 minutes. No data collection or storage.
Lightning Fast
Compress PDF files in seconds with our optimized compression algorithms.
Quality Preserved
Reduce file size up to 90% while maintaining document quality and readability.
Completely Free
No hidden fees, subscriptions, or registration required. Always free to use.
Works Everywhere
Compatible with all devices and browsers. No software installation needed.
Large File Support
Support for PDF files up to 100MB. Handle even the largest documents.
How to Compress PDF Files Online
- Upload your PDF: Click "Choose File" or drag and drop your PDF file into the upload area.
- Start compression: Click the "Compress PDF" button to begin the compression process.
- Download result: Once compression is complete, download your optimized PDF file.
About PDF Compression
PDF compression reduces file size by optimizing images, removing redundant data, and compressing text content. Our advanced compression algorithm maintains document quality while significantly reducing file size, making it perfect for email attachments, web uploads, and storage optimization.