What is Chrome Read Aloud?
Chrome Read Aloud is using Google Chrome to listen to text instead of reading it on screen. Three approaches exist. (1) Chrome extensions like Read Aloud: A Text to Speech Voice Reader require an install plus host-permission for every site you visit. (2) Chrome's built-in Reading Mode, added in Chrome 114, has a Play button in the side panel but only activates on pages Chrome classifies as articles — PDFs, code, and most apps are excluded. (3) Web apps like Wordcast call the Web Speech API directly from a regular Chrome tab — no extension, no install, no permissions prompt. Wordcast belongs to the third category, and the text never leaves the browser.
- Web Speech API shipped in Chrome 25 (early 2013) — 13 years of stable browser support.
- Chrome on Windows / Mac / ChromeOS exposes Google's neural voices (Wavenet) by default.
- Wordcast adds zero Chrome permissions. Extensions need host_permissions for every site.
- Chromium issue #679437 caps speech utterances at ~15 seconds on desktop Chrome — Wordcast works around it.