Tab Tagger does not collect, transmit, or sell any data. All of your data (custom titles, colors, emojis, categories) is stored locally in your browser. If you enable the optional sync feature, that same data is stored in your browser account's own sync storage (Firefox Sync) — it never passes through any server of ours; we do not have one. The extension makes no network requests. Full policy: https://sites.google.com/view/tab-tagger