CastReader

CastReader

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Introduction
CastReader reads webpages, PDFs, Kindle books, and AI answers aloud with synced highlighting in 9 languages.
Listed on
August 21, 2026

What is CastReader?

CastReader is a text-to-speech browser extension and mobile app that reads webpages, PDFs, Kindle books, and AI answers aloud with synced highlighting. It supports multiple languages and offers a unique 'Read & Explain' feature that explains difficult passages in your preferred language while marking key points on the original page. Available on Chrome, Edge, Firefox, Safari, and mobile devices.

How to use CastReader?

  • Install the CastReader extension from the Chrome Web Store or download the mobile app. For quick reading, paste text into the 'Read This to Me' demo on the website. For full features, use the extension or app to open webpages, PDFs, or Kindle books, then press play to listen with synced highlighting. Use the 'Read & Explain' feature for difficult passages, and choose voices from the Voice Hub.

Core features of CastReader

  • Read webpages, PDFs, Kindle books, and AI answers aloud
  • Synced highlighting and auto-scroll
  • Read & Explain: cross-language explanation with pen marks
  • 9 supported languages
  • Voice Hub with real samples and language availability
  • Free tier with 20 minutes/day listening; Pro for more hours and premium voices
  • Available on Chrome, Edge, Firefox, Safari, iOS, and Android

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