Free text to speech online app with natural voices, convert text to audio and mp3, for personal and commercial use NaturalReader is a text-to-speech (TTS) technology that converts text into spoken audio using natural AI voices. It can read aloud PDFs, websites, and books in 99+ languages and supports various TTS features and applications. Turn text into natural speech instantly. Listen to AI-spoken text in your target language. Enjoy lifelike AI voice in over 91 languages. Listen to any site or content instantly. AI Voice Generator. Use AI text-to-speech to create voice over audio with commercial licenses and over 200 natural AI voices.