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.
A note on the token: a classic GitHub token with the gist scope can read and
write every gist on your account, not only the one this extension creates. If you'd
like to limit that, create a fine-grained personal access token restricted to gists instead.
Either way the token lives only on your device — treat it like a password and don't paste it
anywhere you wouldn't paste one.
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. To show each site's icon it loads
favicons from Google's public favicon service (google.com/s2/favicons), which
means that service sees the domains in your lists as you view them.
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.