Privacy Policy
Offthread is a Chrome extension that lets you highlight text on claude.ai, ChatGPT, or Gemini and ask short questions in a side bubble, without changing the main conversation. This policy explains what data is involved and where it goes.
Summary
- Offthread does not run its own servers and does not collect analytics.
- No third-party trackers, advertising SDKs, or remote code are used.
- Questions and excerpts are sent to the host you are on (claude.ai, chatgpt.com, or gemini.google.com) using your existing signed-in session.
-
Bubble state is stored locally on your device via
chrome.storage.local.
Data Offthread handles
When you use Offthread, the extension may process:
- Text you highlight on Claude, ChatGPT, or Gemini (the excerpt).
- Nearby paragraph text used only to resolve references in that excerpt.
- Questions and follow-ups you type in a bubble.
- Model replies streamed into that bubble.
- Preferences you set on the options page (for example, default model and archive-on-close).
- Bubble metadata needed to restore margin threads (titles, message history, and anchors within a conversation).
Where data goes
The model provider. On Claude, Offthread uses your logged-in session in the page. On ChatGPT and Gemini, it calls the official OpenAI or Google Generative Language API with a key you provide in Options. The developer of Offthread does not receive these messages.
Your device. Bubble content, preferences, and any API key you enter are stored locally with Chrome’s extension storage so threads can survive a refresh. This data stays on your machine unless you sync Chrome data through your own Google account settings.
No Offthread backend. Offthread does not transmit your highlights, questions, or replies to any server operated by the extension author.
Permissions
-
storage— save preferences and soft-persist margin bubbles locally. -
Content scripts on
claude.ai,chatgpt.com,chat.openai.com, andgemini.google.com— show the highlight UI, gutter, and bubbles on those sites only.
Data retention and deletion
Local bubble data remains until you dismiss bubbles, clear extension storage, or uninstall Offthread. Removing the extension deletes its local storage. Content sent to a host is subject to that company’s own retention and privacy terms (Anthropic, OpenAI, or Google).
Children
Offthread is not directed at children under 13. Do not use the extension if you are under 13.
Changes
If this policy changes in a material way, the “Last updated” date above will be revised and the new version published at this URL.
Contact
Questions about this policy: open an issue on the Offthread GitHub repository, or contact the author via GitHub at @r0han99.