Compress PDF Online
Reduce PDF file size by optimizing the document structure. Upload your PDF, compress it instantly, and download the smaller version. All processing happens locally in your browser.
Upload PDF to Compress
🗜️
Drop a PDF file here or click to browse
Note: Compression works by re-saving the PDF, stripping unused objects. Results vary by file.
🗜️ Smart Compression
Strips unused objects and optimizes PDF structure to reduce file size without losing content.
📊 Size Comparison
See the original and compressed file sizes side by side with percentage saved.
🔒 100% Private
All processing happens in your browser. Files never leave your device. No server uploads.
Free Online PDF Compressor
Compress PDF files for free directly in your browser. This tool uses the pdf-lib library to re-save your PDF, stripping unused objects and optimizing the file structure. Your files never leave your device.
How It Works
- Upload your PDF file by clicking or dragging it into the upload area
- Click "Compress & Download" to optimize the file
- View the size comparison showing original vs compressed size
- The compressed PDF downloads automatically