I Built an Encrypted Text Sharing Tool With Zero npm Dependencies — Here's the Architecture

The key insight: browsers never send the URL fragment (#...) to the
server in HTTP requests. So the decryption key exists only on the
clients — the server is mathematically unable to read any message.

Features

• Real-time sync via WebSockets
• Syntax highlighting for 190+ languages (auto-detected)
• Encrypted voice notes (MediaRecorder API)
• File sharing up to 5MB
• Password-protected rooms (PBKDF2 key derivation)
• QR code room joining
• Anti-spam with escalating mute system
• Built-in admin dashboard
• Gzip compression for bandwidth optimization

Try It

• Live: shareli.online

• Source: https://github.com/hidayashaikh86-tech/livetext

The whole thing is open source. PRs welcome.

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What would you change about this architecture? Drop a comment 👇