RocketShare is a zero-knowledge file sharing service designed to ensure complete privacy by encrypting files directly in the user's browser before they are uploaded. The main purpose is to provide secure file sharing where the service provider cannot access the contents of the files being shared, addressing concerns about trusting third parties with sensitive data.

Key features include AES-256-GCM encryption performed locally in the browser, with the decryption key stored only in the URL fragment (after the # symbol) which browsers do not send to servers. Users can create expiring links with customizable durations from 1 to 90 days, set optional password protection, and impose download limits on shared files. The service supports resumable chunked uploads that can be resumed within 24 hours and allows downloading all files as a ZIP archive with streaming decryption for large downloads.

The unique approach centers on zero-knowledge architecture where files are encrypted client-side before upload, and only encrypted blobs are stored on RocketShare's servers. The decryption key remains exclusively in the URL fragment that recipients use to access files, ensuring that RocketShare never has access to the encryption keys or unencrypted file contents.

Benefits include the ability to share files without requiring recipients to create accounts, automatic deletion of files after link expiry, and enhanced privacy protection since file contents remain inaccessible to the service provider. Use cases involve securely sharing sensitive documents, photos, and other files where privacy is paramount.

The service works on both desktop and mobile platforms and stores basic transfer metadata such as file names, sizes, timestamps, expiry dates, and download counts to enable functionality, but never stores encryption keys or decrypted content.