The TTS part runs 100% in your browser, so the audio quality is much better on Desktop devices using Safari or Chrome compared to Android and iOS.

https://desktop.with.audio/reader/new?github

It also works for any link as long as the backend can fetch the content.

Check it out and let me know what you think. If you are interested in more details there is also a blog post about this: https://blog.with.audio/posts/web-reader-tts