Close Tab by Regexp does not collect, sell, or share any personal data with the developer or with anyone else.

WHAT THE EXTENSION STORES
The regular-expression rules you create: the pattern, its flags, and whether it is enabled. These are saved with Firefox's built-in extension storage (storage.local) and stay on the device that created them. They are not synchronized between devices and are never sent to the developer.

WHAT THE EXTENSION ACCESSES
Tab URLs, in order to test them against your rules and close matching tabs. URLs are evaluated locally, in memory only. They are not logged, stored, or transmitted anywhere.

NETWORK
The extension makes no network requests at all. Your rules never leave the device.

NO TRACKING
There is no analytics, telemetry, advertising, or third-party code of any kind.

CONTACT
Questions or concerns: https://github.com/eridem/firefox-extension-close-tab-by-regexp/issues