Text‑to‑Speech Technology
How browsers convert written words to spoken audio.
Updated: 1 April 2026
What is Text‑to‑Speech?
Text‑to‑speech (TTS) technology converts written words into spoken language. AI models analyse text and generate smooth audio with natural pronunciation, pacing and intonation. TTS engines are invaluable for accessibility, audio production and language learning.
Speech Synthesis in the Browser
The Web Speech API exposes the browser’s built‑in speech synthesis system, so web apps can speak without contacting external servers. Developers create a SpeechSynthesisUtterance from a string, adjust its rate and pitch, and call speechSynthesis.speak() to hear it. Demo pages let users type text, choose voices and tweak playback settings.
Use Cases & Ethics
Text‑to‑speech serves a wide range of purposes: reading articles aloud, generating voiceovers for videos, helping people with visual impairments and powering virtual assistants. As AI voices become more convincing, it’s important to respect intellectual property and inform audiences when speech is synthetic.
Try It Yourself
Visit our Interactive AI Toolbox to experiment with a simple text‑to‑speech demo. You can enter any text, adjust the rate and pitch, and hear your words spoken in your browser.
Key Takeaways
- Built‑in capability: Modern browsers support speech synthesis through the Web Speech API.
- Wide applications: TTS enhances accessibility, education and media production.
- Ethical awareness: Synthetic voices should be used transparently and responsibly.