Compress PDF
Reduce file size through image downsampling and metadata removal.
Start using Compress PDF
Your files stay strictly inside your browser. No files are uploaded to any server or cloud storage.
Open in Studio WorkspaceHow to use Compress PDF
1. Select Heavy PDF
Choose the file you need to compress.
2. Select Preset
Choose between Low, Recommended, or High compression presets.
3. Download Smaller PDF
Inspect the saved megabytes and download your lightweight PDF.
Technical Architecture & Privacy
Optimize bulky PDF files for email or web distribution. Strip unnecessary metadata, compress raster graphics, and remove redundant object streams.
Unlike conventional PDF websites that send your personal tax forms, legal agreements, and corporate contracts to third-party cloud infrastructure, PDFolio operates under a Zero-Server Architecture. Your documents are decoded into pure memory buffers (Uint8Array) inside your browser's dedicated JavaScript runtime or Web Worker. When you click download, the newly assembled PDF is produced directly from memory into your Downloads folder.
Frequently Asked Questions
How much size reduction can I expect?
Documents with high-resolution scanned images can often be reduced by 50% to 80%.