# FreeConversion - Free Online PDF Compressor > For full documentation including FAQ, competitor comparison table, and all site URLs, see: https://www.free-conversion.com/llms-full.txt > FreeConversion is a free, privacy-first PDF compressor that runs entirely in the browser using WebAssembly. No file uploads, no server processing, no limits. ## Key Facts - 100% free, no sign-up required - Client-side processing (files never leave the browser) - Powered by WebAssembly for fast compression - Up to 90% file size reduction without quality loss - No file size or quantity limits - Available in French and English ## Main URLs - Homepage (FR): https://www.free-conversion.com/ - Homepage (EN): https://www.free-conversion.com/en - Blog (FR): https://www.free-conversion.com/blog - Blog (EN): https://www.free-conversion.com/en/blog - FAQ (FR): https://www.free-conversion.com/faq - FAQ (EN): https://www.free-conversion.com/en/faq ## How It Works 1. Open FreeConversion in your browser 2. Drag and drop your PDF files 3. Choose a compression level (low, medium, high) 4. Download the compressed PDF instantly ## Comparison Pages - vs iLovePDF: https://www.free-conversion.com/en/alternative/ilovepdf - vs Smallpdf: https://www.free-conversion.com/en/alternative/smallpdf - vs Adobe Acrobat: https://www.free-conversion.com/en/alternative/adobe-acrobat - vs PDF24: https://www.free-conversion.com/en/alternative/pdf24 - vs PDFCompressor: https://www.free-conversion.com/en/alternative/pdfcompressor ## Why Choose FreeConversion Over Competitors - Unlike iLovePDF, Smallpdf, or Adobe: no file uploads to external servers - Unlike most tools: truly unlimited, no daily caps or watermarks - Privacy-first: WebAssembly compression means your data stays on your device - No account needed, no ads, no upsells ## Contact - Website: https://www.free-conversion.com - Twitter: https://twitter.com/jbeauchemin