Privacy Policy

Effective date: April 8, 2026

What is ChatTree?

ChatTree is a Chrome extension that visualizes ChatGPT conversation trees as interactive node-and-edge diagrams. It helps you navigate branching conversations.

Data Collection

ChatTree does not collect, transmit, or store any personal data on external servers. Specifically:

• No analytics or tracking. We do not use Google Analytics, Facebook Pixel, or any third-party tracking.
• No conversation content leaves your browser. ChatTree reads your ChatGPT conversations via ChatGPT's own API (on chatgpt.com) solely to build the tree visualization. This data stays in your browser and is never sent to our servers.
• No accounts required. ChatTree does not require you to create an account or sign in.

Local Storage

ChatTree stores the following data locally in your browser using Chrome's storage APIs:

• Node labels — names you assign to conversation nodes (chrome.storage.local)
• License key — your Pro license key, if activated (chrome.storage.sync)
• Theme preference — your chosen color theme (chrome.storage.sync)
• Language preference — English or Chinese (chrome.storage.sync)

Data stored in chrome.storage.sync is synced across your Chrome browsers via your Google account. Data in chrome.storage.local stays on the current device.

License Validation

When you activate a Pro license key, ChatTree sends the key to LemonSqueezy's API (api.lemonsqueezy.com) to verify it is valid. Only the license key string is sent — no conversation data, no personal information.

Permissions

• storage — to save your labels, license key, and preferences
• activeTab — to communicate between the popup and the ChatGPT page
• Host permissions (chatgpt.com, chat.openai.com) — to read conversation data and inject the tree visualization panel

Third-Party Services

ChatTree interacts with:

• ChatGPT (chatgpt.com) — reads conversation data via ChatGPT's existing API. ChatTree does not modify your conversations.
• LemonSqueezy (api.lemonsqueezy.com) — license key validation only (Pro users).

Changes

We may update this policy from time to time. Changes will be posted on this page with an updated effective date.

Contact

If you have questions about this privacy policy, please contact us at: chattree.goutoujunshi.cn