TitleCase is a Firefox add-on that streamlines the process of changing text case with ease. It supports various formats including Title Case, Proper Case, Upper Case, and Lower Case. Users can transform text by either right-clicking on the field or highlighting specific sections. A keyboard shortcut feature enhances user experience, allowing quick case changes directly from the keyboard. The latest version, 3.0, has been rewritten in pure JavaScript using the WebExtension format, ensuring better compatibility and performance.

Additionally, TitleCase includes a context menu option for enabling keyboard shortcuts and has undergone several bug fixes to improve functionality. Users can access options to customize their experience, including maintaining highlighted text after changes. The add-on is subscription-based and aims to provide an efficient tool for developers and anyone needing to manage text case in their web projects.