Hi! Suggesting FileShot.io for reference in the security section.
FileShot.io: https://fileshot.io
GitHub: https://github.com/FileShot/FileShotZKE
License: MIT
A production JavaScript implementation of client-side AES-256-GCM file encryption using the Web Crypto API. Demonstrates zero-knowledge architecture: key generated in browser, encryption before upload, key in URL fragment only. MIT open source, good reference for JavaScript developers working with cryptography.