Text to Speech (TTS) is a Firefox extension designed to convert text into natural-sounding speech using HTML5 TTS APIs. This subscription-based tool enhances user experience by providing easy one-click functionality for text-to-speech conversion. It automatically detects the input language, streamlining the process for users without requiring manual language selection each time. The extension allows users to activate speech by holding specific keys and highlights the selected text as it reads aloud, enhancing accessibility and engagement with the content.

The extension leverages the native HTML5 API, eliminating the need for additional plugins, which simplifies installation and usage. However, users should be aware that the highlighting feature is still in Beta and may not function properly on all websites. Additionally, as the HTML5 TTS API is continuously evolving, users might encounter occasional crashes or errors. For optimal performance, users may need to enable the API through the browser's configuration settings.