# kripken/speak.js

Text-to-Speech in JavaScript using eSpeak

Repository: https://github.com/kripken/speak.js
Canonical: https://ross.abutalabs.com/products/speakjs
Language: C++
License: GPL-3.0
License Family: copyleft
Last push: 2020-01-30T04:30:13+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 5510, "days_push": 2407, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1335, forks 300 (observed 2026-08-28T04:04:25.305586+00:00)

## What it is
speak.js is a port of the eSpeak C++ speech synthesizer to JavaScript via Emscripten, enabling text-to-speech in the browser using only JavaScript and HTML5. It generates WAV audio from text in a web worker and plays it through an HTML Audio element.

## Use cases
- add text-to-speech to a web page without a server
- convert text to spoken audio in the browser
- make a website read content aloud for accessibility
- generate WAV speech audio client-side in JavaScript
- support multiple spoken languages in a web app
- build a browser-based talking application

## When to choose
- you need client-side TTS with no server dependency
- you want a lightweight, self-contained speech synthesizer for the web
- you need multilingual eSpeak voices in JavaScript

## When to avoid
- you need high-quality, natural-sounding modern neural voices
- you need a maintained library with active updates
- you need TTS outside the browser or on mobile native apps

## Facets
- artifact type: library
- maturity: maintenance
- function: tts, speech-recognition, audio-processing
- domain: speech-processing, web-development, frontend, accessibility
- platform: browser
- tags: text-to-speech, espeak, emscripten, web-worker, wav-generation, javascript, web

## Member repositories
- kripken/speak.js (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:25.305586+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T04:44:22.935520+00:00, confidence not recorded.
  - readme: https://github.com/kripken/speak.js (fetched 2026-08-28T04:04:25.305586+00:00, sha 6c9b89d9c9ff)
- Data as of 2026-08-30T08:39:29.467469+00:00.