StreamingKokoroJS: Unlimited, Local Text-to-Speech in Your Browser

StreamingKokoroJS: Unlimited, Local Text-to-Speech in Your Browser

Summary

StreamingKokoroJS provides unlimited text-to-speech capabilities directly within your browser, ensuring 100% local processing and complete privacy. This open-source project leverages the Kokoro-JS model and WebGPU acceleration to deliver high-quality, streaming audio generation without server-side interaction.

Repository Info

Updated on April 26, 2026
View on GitHub

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Introduction

StreamingKokoroJS is an innovative web-based application that brings unlimited text-to-speech (TTS) conversion directly to your browser. Built upon the Kokoro-JS model, it stands out by performing all processing locally, guaranteeing 100% privacy and offline functionality. This project offers a robust, open-source solution for generating high-quality speech audio without relying on any server-side APIs or data transmission. It leverages WebGPU for accelerated processing and provides a seamless streaming audio experience.

Installation

Getting started with StreamingKokoroJS is straightforward. Follow these steps to set up the application locally:

  1. Clone the repository from GitHub.
  2. Serve the files using a local web server of your choice.
  3. Open the application in a modern browser, such as Chrome or Edge, for optimal WebGPU support.
  4. Enter or paste your desired text into the text area.
  5. Click "Play" to stream the generated audio or "Download" to save it to your disk.

Examples

You can experience StreamingKokoroJS firsthand with its online demo. This demo operates entirely in your browser, ensuring that no user text data is ever sent to any server. Simply visit the demo link, type your text, and listen to the generated speech instantly. The project also supports using local models, offering flexibility for advanced users.

Why Use

StreamingKokoroJS offers compelling advantages for anyone needing text-to-speech functionality:

  • 100% Client-Side Processing: All TTS conversion happens directly in your browser, ensuring maximum privacy and data security.
  • WebGPU Acceleration: Automatically utilizes WebGPU for faster processing on compatible browsers, with a WebAssembly (WASM) fallback for broader compatibility.
  • Streaming Audio Generation: Processes text in chunks and streams audio as it's generated, providing a responsive and efficient user experience.
  • Fully Open Source: The entire project is open source under the Apache 2 License, allowing for transparency, customization, and community contributions.
  • Offline Functionality: Once the application and model are loaded, it can function without an active internet connection.

Links

Explore StreamingKokoroJS further using these official links: