Text to speech and voice AI across every device
BB WaveNet records 0 monthly visits with — month-over-month growth and Freemium pricing. CastReader records 55,999 monthly visits with +9.8% growth and Freemium pricing.

Turn any selected web text into natural-sounding speech in Chrome
| Dimension / Metric | ![]() | ![]() |
|---|---|---|
| Official Domain | chromewebstore.google.com | castreader.com |
| Pricing Model | Freemium | Freemium |
| Monthly Visits | 0 (0) | 56K (55,999) |
| MoM Traffic Delta | 0 (—) | +4.98K (+9.8%) |
|---|
| Primary Market & Share | 🌐 Global (—) | 🇺🇸 United States (56%) |
|---|
| Direct Visits / mo | 0 | 19.7K |
|---|
| User Rating | 3.9 | 4.4 |
|---|
| Supported Platforms | Browser Extension | Website |
|---|

Turn any selected web text into natural-sounding speech in Chrome
Uses Google's WaveNet text-to-speech engine to convert selected page text into high-quality, natural-sounding audio.
All captured text and synthesized audio flow into a separate control window instead of playing in the background, as required by Manifest V3.
Move between sentences with arrow keys, play or pause with Enter, K, or F2, and click any sentence to replay it without spending new API characters.
Slow down or speed up playback by 0.25x steps while listening, and download per-sentence OGG files for offline playback at different rates.

Read aloud webpages, PDFs, Kindle books and AI answers with synced highlighting
Natural AI voices narrate webpages, PDFs, ebooks and documents while each spoken word is highlighted and the page auto-scrolls, so you never lose your place.
Instead of only reading a hard passage, CastReader summarises and unpacks its meaning in the language you know best, with an animated pen marking the key lines in the original text.
Works across Kindle, WeRead, Google Play Books, O'Reilly and other book platforms, news and newsletter sites, Google Docs, Notion, Gmail, plus ChatGPT, Claude, Gemini, DeepSeek and Kimi answers.
Preview real samples of dozens of voices across many languages, and create private cloned voices that Pro members can apply to their own PDF, EPUB, Word and TXT files.
Text to speech and voice AI across every device
Free AI text to speech with 200+ voices in 70+ languages
Free online text-to-speech with hundreds of AI voices across more than 100 languages
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Free AI text-to-speech across 140+ languages with instant MP3 downloads

Hear OpenAI's text-to-speech voices in your browser, no setup required
Listen to anything. Beautifully.

Turn any webpage, PDF, Doc or ebook into natural-sounding speech in 60+ languages
Turn PDFs, docs and web pages into natural-sounding audio you can listen to anywhere

Free ChatGPT-style text-to-speech and speech-to-text in your browser

Free browser text-to-speech with natural neural voices
Listen to PDFs, ebooks, and webpages in natural AI voices with synced highlighting.
Reader mode, text-to-speech and AI summaries for any web page
Text to speech and voice AI across every device
Free AI text to speech with 200+ voices in 70+ languages
Free online text-to-speech with hundreds of AI voices across more than 100 languages
Free AI text-to-speech across 140+ languages with instant MP3 downloads
Listen to anything. Beautifully.
Turn any webpage, PDF, Doc or ebook into natural-sounding speech in 60+ languages
Turn PDFs, docs and web pages into natural-sounding audio you can listen to anywhere
Free ChatGPT-style text-to-speech and speech-to-text in your browser
Free browser text-to-speech with natural neural voices
Reader mode, text-to-speech and AI summaries for any web page