Convert Case is a subscription-based browser extension designed for Firefox that allows users to easily convert selected text to various case formats, including UPPER CASE, Sentence case, and more. This tool enhances productivity by enabling users to right-click on highlighted text to instantly change its case, with an optional feature to auto-copy the converted text to the clipboard. The extension is particularly useful for social networking and communication tasks, making it a valuable addition for users who frequently deal with text formatting.

The extension has undergone several updates to improve its functionality and user experience. Recent versions have introduced support for platforms like Disqus and Reddit, as well as enhancements for WYSIWYG editors. Additional features include keyboard shortcuts for quick access to conversion options and reliability updates to ensure smooth operation. With its straightforward interface and practical features, Convert Case is an effective tool for anyone looking to streamline their text editing process.