Uncompressed File Transfer Online: Real-time Direct P2P Lossless Delivery

The Problem with File Compression

When sending files online, compression is often used automatically by sharing platforms. Cloud services, email providers, and chat apps compress photos, videos, and archives to save server storage space and reduce bandwidth costs. While this is convenient for the provider, it is frustrating for professionals who need to share uncompressed, high-fidelity files. Automated compression ruins raw photography, degrades video color spaces, and breaks precise engineering projects.

This is where uncompressed file transfer comes in. Direct browser-to-browser P2P networking lets you transfer raw data without quality loss or automatic format changes. By avoiding intermediate servers, files arrive on the recipient's device in their exact original state, preserving pixel-perfect quality and complete file integrity.

How Direct P2P Transfers Maintain Raw Quality

Direct peer-to-peer (P2P) transfers bypass intermediary servers entirely. In traditional sharing models, a file is uploaded to a cloud platform, processed by the hosting server, and then downloaded by the recipient. This processing stage is often where files are optimized or compressed without your consent. In contrast, our platform uses WebRTC to establish a direct connection between the sender and receiver.

Because the connection is direct, the file is read locally as raw binary data (a Blob or ArrayBuffer) and sent across the network stream. The receiver's browser pieces the binary data back together into the original file format. This guarantees that not a single byte of your file is altered, recompressed, or stripped of metadata during transit.

WebRTC and Browser Memory Streaming

Transferring large, uncompressed files directly through the browser requires efficient memory handling. Older browser-based tools attempted to load entire files into RAM before initiating a transfer, which could cause browser tabs to crash when handling files larger than 1GB. Our system overcomes this limitation by streaming files in chunks.

Using JavaScript's File System Access API and Streams API, files are read in small, manageable blocks and sent through WebRTC Data Channels. As the recipient receives these blocks, they are processed and written directly to local storage. This approach keeps memory usage low and allows you to share files of any size without risking system instability.

Security: Serverless AES-256-GCM Encryption

Security is critical when sharing uncompressed creative work, high-resolution media, or sensitive client documents. Our platform secures all transfers using client-side AES-256-GCM encryption. The decryption key is generated in your browser and appended to the sharing link as a URL hash parameter. Because the hash is never sent to the signaling server, the data remains private during transfer.

Frequently Asked Questions on Uncompressed Transfers