Open source

Beautiful file previews for AI coding agents

Turn your AI agent's file changes into shareable, beautifully rendered web pages. Works with OpenClaw, Hermes, and any AI agent.

View docs
Agent

OK, I've edited the documentation for you.

You

Use diff4 to see what you've changed.

Agent

Sure. Please review this on https://diff4.com/dfj3ds

diff4.com/dfj3ds

Your code stays yours

Everything you share is encrypted end-to-end before it leaves your machine. Not even we can read it.

AES-256-GCM

Military-grade encryption for every diff and file you share.

Zero-knowledge server

Files are encrypted on your machine before upload. The server only stores ciphertext.

Passphrase-protected

Only someone with the passphrase can decrypt and view your changes.

PBKDF2 · 600,000 iterations · Web Crypto API
Learn more about encryption →