Google Translator Lite is an unofficial Firefox add-on designed to facilitate easy translations across 91 languages. This tool leverages the mobile version of Google Translate, providing users with an intuitive toolbar panel that allows for seamless translation of words and sentences. Key features include auto-detection of input languages, instant translations as you type, and an integrated spell-check feature. Users can also access their translation history and save favorite translations for quick reference.

The add-on is subscription-based and offers a resizable popup UI for user convenience. It encourages efficient text copying via keyboard shortcuts and provides a straightforward method for reporting bugs through its homepage. Overall, Google Translator Lite enhances the browsing experience by making language translation accessible and user-friendly.