CastReader vs Immersive Reader
Immersive Reader Works in Edge. CastReader Works in Chrome.
Microsoft Immersive Reader is excellent — but it only works in Edge, Word, OneNote, and Teams. CastReader brings the same read-aloud + highlighting experience to Chrome, on any website, including Kindle and AI chats.
Feature Comparison
| Feature | CastReader | Immersive Reader |
|---|---|---|
| Price | Free forever | Free (in Microsoft apps) |
| Voice Quality | 8/10 (Kokoro AI) | 7/10 (Microsoft Azure) |
| Kindle Cloud Reader | ✓ Works (OCR) | ✗ Fails |
| WeRead Support | ✓ Works | ✗ Fails |
| AI Chat Per-Response | ✓ Listen button per response | ✗ Reads entire page |
| Paragraph Highlighting | Paragraph-level on page | Line-level focus mode |
| Page Extraction | 15+ specialized extractors | Only in supported Microsoft apps |
| Account Required | ✓ No account needed | No |
Why Choose CastReader Over Immersive Reader
Microsoft's built-in reading tool in Edge, Word, OneNote, and Teams? Here's what CastReader does differently.
Chrome Support
TTS in Your Favorite Browser
Immersive Reader is built into Edge, Word, OneNote, and Teams — but not Chrome. If Chrome is your browser, CastReader gives you the same core experience: read-aloud with text highlighting. Install the extension and it works on every website.
Any Website
Not Limited to Microsoft Apps
Immersive Reader only works in Microsoft products. CastReader works on any website — Medium, Substack, ChatGPT, Google Docs, Wikipedia, Reddit, and more. Plus it has 15+ specialized extractors that understand each site's layout.
Kindle & AI
Works Where No Reader Does
CastReader reads Kindle Cloud Reader (OCR), WeRead, and adds per-response Listen buttons on ChatGPT, Claude, and Gemini. Immersive Reader doesn't work on any of these platforms.
Frequently Asked Questions
CastReader vs Immersive Reader — common questions
Can I get Immersive Reader in Chrome?
Microsoft Immersive Reader is not available in Chrome — it's built into Edge, Word, OneNote, and Teams only. CastReader is the closest Chrome equivalent: TTS with paragraph highlighting on any webpage. Install from the Chrome Web Store.
Is CastReader as good as Immersive Reader?
For TTS + highlighting: CastReader's AI voices sound more natural, and it works on more websites. Immersive Reader has additional features like syllable splitting, line focus, picture dictionary, and grammar tools that CastReader doesn't have. For pure read-aloud, CastReader is better. For full reading comprehension tools, Immersive Reader offers more.
Does Immersive Reader work on any website?
No. Immersive Reader only works in Microsoft apps (Edge reading view, Word, OneNote, Teams, Outlook). CastReader works on any website in Chrome or Edge — including specialized platforms like Kindle, ChatGPT, and WeRead.
Can I use both?
Yes. Use Immersive Reader in Microsoft apps (Word documents, OneNote notes, Teams messages) and CastReader in Chrome for everything else (articles, Kindle books, AI chats, research papers). They complement each other.
Is CastReader free like Immersive Reader?
Yes. Both are free. Immersive Reader is free in Microsoft products. CastReader is free in Chrome and Edge. No account, no limits, no premium tier.
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Try CastReader Free
No signup. No limits. Install and start listening in 10 seconds.