Build a Text-to-Speech Reader with Sentence Highlighting in JavaScript
2025-06-26

This article guides you through building a simple web tool that leverages JavaScript's SpeechSynthesis API for text-to-speech (TTS) functionality and dynamic sentence highlighting. It explains how to control speech playback, set voice parameters, and track speech events. The article also details implementing sentence-level highlighting using CSS and JavaScript, culminating in a fully functional interactive reader with play, pause, resume, stop buttons, and voice selection. The complete HTML, CSS, and JavaScript code is provided.
Development
Sentence Highlighting