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Add Valeon-style word highlighting to your website with zero configuration. Automated synthesis, alignment, and secure hosting—all in one plugin.

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Astro Integration

The official VocaSync plugin for Astro. Add text-to-speech with word-level highlighting to your static site in minutes.

v1.0.1TypeScriptMIT

Automated synthesis — Converts your Markdown/MDX content to natural speech
Word-level alignment — Precise timestamps for every word
Audio player component — Drop-in player with word highlighting
Multilingual — Speech synthesis in 57 languages; word-level highlighting in the 15 alignment-supported languages
Math-to-speech — LaTeX equations read aloud naturally
CLI included — Sync content from the command line

Install the package

npm install @vocasync/astro

Add to your Astro config

import vocasync from '@vocasync/astro'

Sync your content

npx vocasync sync

See the full documentation for configuration options, the AudioPlayer component, and advanced usage.

We're building plugins for the most popular platforms. Request an integration or contribute on GitHub.

WordPress Plugin

Available

One-click audio for any post or page with Gutenberg block support.

Currently being submitted to the WordPress.org plugin directory — install from the GitHub release for now.

React Component Library

Coming Soon

Headless React components for custom integrations and frameworks.

We can build custom integrations for your platform or help you integrate VocaSync directly via our REST API.