PDF Compressor
Reduce PDF file size online for free. Compress PDFs for email, web uploads, or storage — all processing happens in your browser.
Compress your PDF
Upload a PDF file to reduce its size. Processing is done locally in your browser.
Privacy: Your PDF never leaves your device. All compression is performed locally using JavaScript.
Drop PDF here or click to browse
Supports PDF files up to 100MB
Free Online PDF Compressor
Our PDF compressor helps you reduce PDF file size without installing any software. Whether you need to compress PDF for email, web uploads, or storage, this tool processes everything in your browser for complete privacy.
How it works
The PDF is processed using the pdf-lib JavaScript library directly in your browser. The compression removes redundant data, optimizes the internal structure, and reduces the overall file size while preserving the document's readability.
Compression levels
- Low Compression: Minimal size reduction, best quality preservation
- Medium Compression: Balanced approach for most use cases
- High Compression: Maximum size reduction for smallest files
Why use our PDF compressor?
- 100% free with no registration required
- Your files never leave your device — complete privacy
- No file size limits enforced by servers
- Works on any device with a modern browser
- No watermarks added to your PDFs