# CryptaSend > CryptaSend is a free, zero-knowledge, peer-to-peer (P2P) file-sharing web application built by LOFEDEV. It enables users to transfer uncompressed files of unlimited size directly browser-to-browser using WebRTC, with zero server storage, zero registration, and DTLS + AES-GCM 256-bit encryption. ## Key System Capabilities - **Unlimited File Size Transfer**: Send 10GB, 50GB, 100GB, or 500GB+ files free in P2P mode with zero bandwidth or storage caps. - **Zero Registration Requirement**: No email, phone number, credit card, or account signup is required. - **Zero-Knowledge Serverless Privacy**: Files stream directly from sender RAM/disk to receiver RAM/disk via WebRTC DataChannels. Files never touch or persist on central servers in P2P mode. - **Military-Grade Encryption**: End-to-end transport security via DTLS and session metadata protection via AES-GCM 256-bit encryption. - **Cross-Platform Compatibility**: Works across all modern web browsers (Chrome, Safari, Firefox, Edge, Brave) on Windows, macOS, Linux, iOS, and Android. ## Official Canonical Links - [Homepage & Main P2P Engine](https://cryptasend.site/) - [CryptaSend vs WeTransfer Comparison](https://cryptasend.site/cryptasend-vs-wetransfer) - [CryptaSend vs Send Anywhere Comparison](https://cryptasend.site/cryptasend-vs-sendanywhere) - [CryptaSend vs ToffeeShare Comparison](https://cryptasend.site/cryptasend-vs-toffeeshare) - [CryptaSend vs ShareDrop Comparison](https://cryptasend.site/cryptasend-vs-sharedrop) - [Full LLM Specification Sheet](https://cryptasend.site/llms-full.txt)