Spellophoneespeak-ng in JavaScript

Text-to-speech and phoneme transcription for Node.js and browsers, compiled to WebAssembly. No server, no native addon.

Speech synthesis
Over a hundred languages and accents, 16-bit PCM out, with word, sentence, mark and phoneme events for highlighting and timing.
Phoneme transcription
Turn text into IPA or espeak-ng's ASCII phonemes with one call, which is what spelling and reading tools usually need.
Runs anywhere
One package for Node.js, browsers and workers. Dictionaries are fetched on demand, so a page only downloads the languages it uses.
Typed and small
Written in TypeScript, bundled with tsdown. About 380 KB of wasm plus 450 KB of compressed data for English.

Speech synthesis