CastReader

CastReader is a text-to-speech and reading-assistance tool that comes as both a browser extension and a mobile app, so you can turn reading time into listening time wherever it suits you best.

It reads webpages, PDFs, Kindle books, ebooks, documents, emails, and even AI responses aloud, with synchronized highlighting and auto-scroll that keep your eyes on the exact words being spoken. This makes it easy to follow long articles on a commute, review PDFs hands-free, or digest AI answers without squinting at the screen.

Struggling with a difficult passage? CastReader's Read & Explain feature helps you understand it through spoken explanations, subtitles, and annotations, all while the original source stays visible so you never lose your place.

CastReader supports multiple languages, including German, and works across Chrome, Edge, Firefox, iPhone, iPad, and Android, letting you carry a consistent listening and reading experience across your favorite devices and workflows.