Lumo Chat Export by .Lab

Lumo Chat Export gives you instant control over your Lumo conversation history. Since Proton doesn't offer a native export feature yet, this extension fills the gap — securely and privately.
How It Works

Open any Lumo chat page
Click the extension icon in your toolbar
Choose your preferred format (JSON, Plain Text, or HTML)
Click Export — your file downloads instantly


Export Formats

JSON — Structured data perfect for developers, imports, and automation
Plain Text — Clean, readable conversation logs
HTML — Beautifully styled visual archives you can open in any browser


Key Features

One-click export with no configuration needed
Automatically strips out UI clutter, thinking paths, and action buttons
Sleek dark-mode interface that matches the Proton ecosystem
Works with any conversation length


Privacy

This extension collects zero data. All processing happens locally in your browser. Your conversations never leave your device. No servers, no analytics, no tracking — just a clean export tool.
Requirements

Firefox 140 or later
An active Lumo chat session


Not affiliated with Proton AG.