Do you have your own OpenAI-compatible Speech endpoint running and want to use it in Firefox? This is a TTS implementation for the OpenAI API format. It can probably be used for any OpenAI api compliant service but its made for remsky/Kokoro-FastAPI. Click 'Read Selected Text' in the context menu after highlighting text. Instructions: - You can change the API URL, API key, speed and voice by clicking the extension icon in the toolbar. - If no checkbox is checked, it will generate the audio sentence by sentence during playback. - The streaming mode is the prefered way of using the extension. - The download mode will provide an mp3 file. Since you can host your own speech endpoint, privacy and accessibility are as good as the service you're running. Github: https://github.com/BassGaming/customtts Personally I recommend using Kokoro FastAPI in a docker container: https://github.com/remsky/Kokoro-FastAPI/ Android: To read text: Mark text -> click the three option dots -> Extensions -> Custom TTS Reader To access settings: Click the three option dots -> Extensions -> Extension Manager -> Custom TTS Reader -> Settings Credits: Winor for refactoring the code, improving the UI and more. sagesound for improving the non-streaming logic. rampadc for fixing the streaming code. Note: This is just a quick implementation since I couldn't find a similar extension where you could use your own API endpoint anywhere. Feel free to improve it... or not