When you store tabs, Even Better OneTab saves the titles, URLs, favicon addresses, and tab-group names of those tabs — along with list names, tags, colors, your settings, and a recently-deleted history — in your browser's local extension storage. This data never leaves your device unless you enable sync.
Nothing. The extension contains no analytics, no telemetry, no error reporting, no advertising, and no third-party services. The developer never receives, sees, or has access to any of your data.
If you choose to enable sync, you provide a GitHub access token that you create on your own
GitHub account. The extension then uploads your tab lists as a private gist on
your account, communicating directly with GitHub's API
(api.github.com) over HTTPS. No server other than GitHub's is ever contacted,
and the developer has no access to your token, your gist, or your lists. Your token is
stored in the extension's local storage on your device. GitHub's handling of your data is
governed by GitHub's Privacy Statement.
The companion mobile viewer page works the same way: the token and gist id you enter are stored only in that browser's local storage, on that device, and are used solely to fetch your gist from GitHub's API. The page has no analytics and no backend.
Uninstalling the extension deletes all locally stored data. If you used sync, you can delete the gist from your GitHub account at any time; disconnecting sync in the extension's settings removes the token from your browser.
If this policy changes, the updated version will be published at this address with a new date. Questions or concerns: open an issue at github.com/bphirsh/even-better-onetab.