miyo capture — Privacy Policy

About this extension

miyo capture is a browser extension that exports your own conversation history from ChatGPT and Claude as markdown files. This policy explains exactly what the extension accesses, how that information is handled, and what leaves your device (nothing).

What the extension accesses

When — and only when — you click Download for a site, the extension fetches your conversations from that site using your existing signed-in browser session. The data it reads is:

• Your conversation content: titles, timestamps, and the messages in each conversation.
• Your sign-in status on each site, so it can tell you whether you need to log in before capturing.

The extension relies on the session you are already logged into in your browser. It does not read, collect, store, or transmit your passwords or authentication credentials.

How your information is used

The conversations the extension reads are used for one purpose only: to build the ZIP file of markdown that you asked for. That processing happens locally, in your browser. Once the ZIP has been downloaded, the temporary working copy is cleared.

What leaves your device

Nothing.

The extension has no backend. It does not send your conversations, browsing activity, or any other data to us or to any third party. It contains no analytics, no telemetry, no advertising SDKs, and no feedback or crash-reporting pings. All network requests it makes go directly to ChatGPT and Claude to fetch your own data — the same servers your browser already talks to when you use those sites.

Permissions and why we request them

• storage — saves your local preferences (such as the selected time range) and resume bookkeeping so an interrupted capture can continue. This stays on your device.
• Access to chatgpt.com and claude.ai — lets the extension fetch your conversation history from those sites when you click Download. These are the only sites the extension can access.

Data storage and retention

During a capture, the extension buffers your conversations in your browser's local storage (IndexedDB) so it can assemble the ZIP. This buffer is cleared automatically after the ZIP downloads, or if you stop the capture. Your small preference and resume records are kept in local extension storage until you change them or uninstall the extension. Uninstalling miyo capture removes all of its local data. The exported ZIP file itself lives wherever your browser saves downloads, and is entirely under your control.

Data sharing and sale

We do not sell, rent, or share your data with anyone. Because your data never leaves your device, there is nothing for us to share. Use of the information accessed by the extension is limited to the single purpose described above, in line with the Chrome Web Store Limited Use requirements.

Children's privacy

miyo capture is a general-purpose productivity tool and is not directed to children under 13.

Changes to this policy

If we update this policy, we will revise the date at the top of this page. Material changes will be reflected here before they take effect.

Contact

Questions about this policy or the extension? Email us at info@brevilabs.com.