edge-tts-universal and edge-tts-as-a-service
One provides a JavaScript library to interact with Edge's TTS service, while the other offers an HTTP service wrapper around the Edge-TTS library, making them ecosystem siblings where the latter leverages the former for a specific deployment model.
About edge-tts-universal
travisvn/edge-tts-universal
Use Microsoft Edge's online text-to-speech service in Node.js, browsers, or any JavaScript environment WITHOUT needing Microsoft Edge or Windows or an API key
Replicates Microsoft's WebSocket protocol with custom headers (Sec-WebSocket-Version, MUID authentication) and timing-aware chunk synthesis, working across Node.js, Deno, Bun, and edge runtimes via Web standard APIs. Offers multiple entry points (Universal, Node.js-optimized, Browser, WebWorker) with tree-shakable imports, from ~30KB gzipped for browser-only to ~46KB for full Node.js functionality, plus streaming APIs with metadata events (WordBoundary, SentenceBoundary) for subtitle synchronization.
About edge-tts-as-a-service
doctoroyy/edge-tts-as-a-service
This is a simple HTTP service that uses the Edge-TTS library to generate text-to-speech audio files.
Provides both streaming and file-download endpoints for real-time and batch TTS processing, with fine-grained control over speech parameters (rate, pitch, volume). Leverages Microsoft Edge's TTS engine through a Flask REST API, supporting 100+ voices across multiple languages and locales with configurable connection/receive timeouts. Can optionally generate WebVTT subtitle metadata alongside audio output.
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