Lumo Chat Export

Lumo Chat Export is a Firefox browser extension that enables users to export their Lumo (Proton AI) chat history in multiple formats. Since Proton does no
t currently offer a native export feature for Lumo conversations
this extension fills that gap with a privacy-focused solution.

Overview

This extension allows users to instantly download their conversation history from Lumo chats. All processing happens locally within the browser—no data is sen
t to external servers, ensuring complete privacy and security.

Key Features

Export Formats

• JSON: Structured data ideal for developers, automation, and programmatic imports
• Plain Text (.txt): Clean, readable conversation logs
• HTML: Visually styled archives that can be opened in any web browser

Core Capabilities

• One-click export: No configuration required
• Clean output: Automatically removes UI clutter, thinking paths, and action buttons
• Dark mode interface: Matches the Proton ecosystem aesthetic
• Scalable: Works with conversations of any length
• Instant download: Files are generated and downloaded immediately

How It Works

1. Open any Lumo chat page in Firefox
2. Click the extension icon in your browser toolbar
3. Select your preferred export format (JSON, TXT, or HTML)
4. Click Export—your file downloads instantly

Privacy & Security

• Zero data collection: The extension collects no personal data
• Local processing: All export operations happen entirely in your browser
• No tracking: No analytics, no external servers, no telemetry
• Your conversations stay yours: Nothing leaves your device

Requirements

• Firefox 140 or later
• An active Lumo chat session

Important Notes

• Not affiliated with Proton AG: This is a third-party extension developed independently
• Firefox only: Designed specifically for the Firefox browser
• Active development: Regularly updated (last updated July 7, 2026)

Support

• Support Site: https://carlostkd.ch/lumo/export

Installation

Available through the official Firefox Add-ons website.

This extension empowers users to take control of their conversation data with a simple, secure, and private export tool.