CastReader adds text-to-speech to O'Reilly Learning Platform. Click play on any chapter — it reads aloud with paragraph highlighting, skips code blocks, and auto-advances to the next chapter.
Built for technical content — not just another generic TTS tool
O'Reilly has the world's largest technical book library — over 50,000 titles on programming, AI, DevOps, data science, and more. But fewer than 1% have audiobook versions. O'Reilly's mobile app has basic device TTS, but with robotic voices and no smart content filtering. Technical books deserve better.
Technical books are full of code snippets, tables, and diagrams that make no sense when read aloud. CastReader intelligently extracts only the readable text — paragraphs, headings, and list items — while skipping code blocks, tables, figures, and footnotes.
Each paragraph highlights as it's read aloud. Click any paragraph to jump there. The page auto-scrolls to follow the reading — so you can read along or just listen.
Scrolled halfway through a chapter? CastReader detects your reading position and starts from there — no need to listen from the beginning. Works on any page with URL anchors.
Free to use. No signup needed. Every book in your O'Reilly library becomes listenable — you're already paying for the O'Reilly subscription, so just install and listen. Upgrade to CastReader Pro for premium voices and more listening hours.
O'Reilly Learning (formerly Safari Books Online) is the gold standard for technical education — over 50,000 books from O'Reilly, Addison-Wesley, Pragmatic Bookshelf, Packt, and Manning, plus thousands of hours of video courses. If you're a software engineer, data scientist, or tech professional, chances are your company or university provides an O'Reilly subscription. The problem: almost none of these books have audiobook versions.
This matters because technical professionals are busy. You want to absorb 'Designing Data-Intensive Applications' during your commute, review 'AI Engineering' while cooking, or catch up on the latest Kubernetes book at the gym. But the only way to consume O'Reilly content is to sit down and read — until now.
O'Reilly's mobile app includes a basic read-aloud feature that uses your device's built-in TTS engine. It works, but the voice quality is robotic, it reads everything on the page (including code blocks, table headers, and figure captions), and there's no smart content filtering. For a 400-page technical book full of code examples, this is unusable.
CastReader solves this by adding intelligent text-to-speech to O'Reilly's web reader at learning.oreilly.com. It identifies the chapter content container, extracts only readable text (paragraphs, headings, list items), and skips code blocks, tables, figures, and footnotes. The result is clean, natural audio that makes sense — you hear the author's explanations without 'import numpy as np, def train underscore model, open paren, X comma y, close paren, colon' interrupting every other paragraph.
The workflow: open any book on O'Reilly Learning in Chrome or Edge, click the CastReader extension icon, and press play. It reads the current chapter aloud with paragraph highlighting that follows along. When you're done with a chapter, CastReader can auto-advance to the next one. If you scrolled halfway through the chapter before clicking play, it detects your position and starts reading from there — no need to listen from the beginning.
Everything about O'Reilly text to speech
O'Reilly's mobile app has a basic read-aloud feature using your device's built-in TTS. However, it reads everything including code blocks and tables, making it unusable for technical books. The web reader at learning.oreilly.com has no built-in TTS. CastReader adds intelligent TTS that skips code and reads only the prose.
O'Reilly has a small audiobook catalog (a few hundred titles), but the vast majority of their 50,000+ technical books have no audio version. CastReader turns any O'Reilly book into an audiobook using AI text-to-speech.
Install CastReader (free Chrome extension), open any book on learning.oreilly.com, and click the extension icon. CastReader reads the chapter aloud with paragraph highlighting, skipping code blocks and tables automatically.
Yes. CastReader's O'Reilly integration automatically filters out code blocks, inline code, tables, figures, and footnotes. It only reads paragraphs, headings, and list items — the parts that make sense as spoken audio.
Yes. When the current chapter finishes, CastReader automatically clicks the next chapter button and continues reading. You can listen through an entire book hands-free.
Yes — CastReader is free to use, no signup. CastReader Pro (optional) adds premium ultra-realistic voices, more listening hours, voice cloning, and AI document analysis. You're already paying for your O'Reilly subscription — CastReader adds audio on top.
CastReader supports 40+ languages with natural AI voices. Most O'Reilly books are in English, but CastReader automatically detects the language and selects the appropriate voice.
Yes. CastReader works with O'Reilly accessed through library proxies (e.g., EZproxy) and direct access at learning.oreilly.com. It detects O'Reilly's content structure regardless of the access method.
Yes. Scroll to where you want to start, then click play. CastReader detects your scroll position via the URL anchor and begins reading from that point — no need to listen from the beginning of the chapter.
O'Reilly's mobile app read-aloud uses basic device TTS and reads everything on the page including code. CastReader uses AI voices (40+ languages), intelligently skips code/tables/figures, supports paragraph highlighting, auto-advances chapters, and works on the web reader.
Safari Books Online was the former name of O'Reilly Learning Platform. It was renamed in 2019. CastReader works with the current O'Reilly Learning platform at learning.oreilly.com and provides text-to-speech for all books in the library.
CastReader's Send to Phone feature streams audio to your phone via Telegram. Start reading on your computer, tap the phone icon, and continue listening on your phone during your commute.
No, CastReader is designed for text content (books, articles, documentation). O'Reilly video courses already have audio narration.
Conceptual and design-focused books work best — think 'Designing Data-Intensive Applications,' 'Clean Code,' 'The Pragmatic Programmer,' or 'AI Engineering.' Books that are heavy on code examples (like cookbooks or reference manuals) still work but you'll skip more content since CastReader filters out code blocks.
硬数据 —— 不是 vibe —— 来自权威来源
effect size 0.35
22 篇研究的 meta 分析显示 TTS 对阅读障碍学生的理解力提升幅度（Wood, Moxley, Tighe & Wagner, Journal of Learning Disabilities, 2018）
Source →下方每一条 Chrome Web Store 评论都可以在卡片链接处验证。我们不藏负面反馈 —— 我们 24 小时内回复。
“This is 1 of the best TTS and its smooth. If this is truly free i'll keep this 100%. Every other TTS says its free but has a secret. They interrupt or they just say better ai voices pay. But i like this voice. I've tried loads and this is 1 of the best ones that actually says free.”
“Works perfectly on vivaldi. One suggestion though. I wish it had a play button appear next to a paragraph when we hover over it. Just like in the case of speechify.”
“Extremely user friendly short keys. Placed forward backward and speed up down as Natural as it could be. Voices are great and smooth. I would recommend it over many hyped products.”
“At the very least it's better than many paid TTS models. Still not as good as ElevenReader or LAP, but maybe the best free model for TTS.”
“So glad I can finally switch voices! The default was fine but I found one I actually enjoy listening to for hours. Small thing, huge difference.”
“Best one i found, user friendly, and great voice over.”
“ChatGPT's long answers are finally listenable. Let it generate while I listen — doubles my productivity. Love the inline button next to each response.”
“I tried using this add-on to listen to an ebook on the O'Reilly learning platform, and it works smoothly. However, it always restarts from the first paragraph whenever I scroll or select a different paragraph. Please consider adding a bookmark or checkpoint feature so users can mark where the reading should begin.”
↪ Founder reply
CastReader 创始人 Yan Xu 48 小时内回复：承认问题，下个版本上线了 bookmark 功能。这条评论的反馈直接推动了 v1.2 路线图。
“Need to highlight text and select it.”
“Hard to select text.”
↪ Founder reply
CastReader 创始人 Yan Xu 24 小时内回复：道歉、询问发生的网站/浏览器、提供键盘快捷键作为绕过方案、留下 support@castreader.ai 直接支持邮箱。
我们持续测试、改写、上线。每条更新都带真实日期。
用 verbatim Chrome Web Store testimonial、真实有声书市场数据、12 工具实测的 methodology 重写落地页。每条主张都有来源链接。
Telegram 音频流现在能稳定自动翻页，覆盖 Kindle Cloud Reader 和 Apple Books。内部测试显示会话中断减少约 70%。
写了 OCR 管线的深度文章：CastReader 如何处理 Amazon 每本 Kindle 书 184 套随机字母表和 361 个独特 glyph。发表在 dev.to。
原生 macOS 应用，朗读 Kindle for Mac，词级高亮。浮窗播放器 + 系统级快捷键。不需要浏览器。
Daily 榜 #10，99 upvotes，4 条社区评论推动了 v1.2 路线图。
从旧 TTS 引擎切换到 Kokoro 神经网络语音。用户评论从 'usable but robotic' 转为 'enjoy listening for hours'（来自 patrick chiang 的 Chrome Web Store 评论原话）。
英文 Kindle 书的 OCR 成功率从 78% 提升到 89%。加入了多栏页面检测（学术 PDF 适用）。
我做 CastReader 是因为我有几百本 Kindle 书，想在晨跑时听它们，但不想为每本再买 Audible 版。技术问题 —— Amazon Cloud Reader 的字体加密 —— 最后用 OCR 解决了。产品问题 —— 让它在手机、桌面、40+ 语言上真正好用 —— 花了两年迭代。我们是个小团队。我亲自回复每一条 Chrome Web Store 评论（上方 testimonials 里有证明 —— 包括 3 星和 1 星的）。如果有什么坏了或缺失，邮件 support@castreader.ai。
—— Yan Xu, 创始人
最近审阅: · CastReader 团队 —— 基于 2025 测试数据
Free to use, no signup — upgrade to CastReader Pro for premium voices, more listening hours, and AI document analysis. Install and start listening to O'Reilly books.
★★★★★ 4.7 · Free to start · No login · Optional Pro
