Edge Tts

Edge TTS is a Node.js or Bun package that taps into the online text-to-speech service underlying Microsoft Edge. It allows you to generate natural-sounding speech from text without needing the Edge browser, a Windows environment, or any API key. Simply install the package and start converting text to audio. This tool is ideal for developers building voice applications, accessibility tools, or content generation pipelines. It provides a straightforward API to list available voices (including multilingual and neural voices) and synthesize speech to file or stream. The package is lightweight and works cross-platform. Under the hood, Edge TTS mimics the requests that Edge browser makes to Microsoft's cloud TTS service. This means it's free to use (subject to Microsoft's terms of service) and offers high-quality voices comparable to commercial offerings. The project is open source and actively maintained on GitHub. What sets Edge TTS apart is its simplicity and zero-cost model. Unlike many TTS APIs that charge per character or require complex OAuth flows, Edge TTS just works. However, because it relies on an unofficial interface, it may break if Microsoft changes its service. The package is Python-based (original) with a Node.js port, and a PHP version also exists.