PDF Compressor

Reduce PDF document file size directly in your browser. Choose compression level, compare original versus compressed file sizes, and download the optimized PDF instantly.

Key Features

• 100% Client-side processing — files never leave your browser
• Preserves original PDF layouts, vector graphics, and fonts
• Instant side-by-side compression ratio comparison
• No file size caps or daily usage limitations

Frequently Asked Questions

Does PDF compression affect document image quality?

DODDY uses intelligent stream re-compression and downsampling algorithms. Text remains sharp while image streams are optimized without visible loss.

Are my PDF files stored on your servers?

No. All PDF processing happens directly in your WebAssembly/JavaScript browser runtime. Your files are never uploaded to any remote server.

How much can I reduce my PDF file size?

Depending on embedded graphics and uncompressed streams, file sizes are typically reduced by 40% to 85%.