Turn any Medium article into natural-sounding audio. Open it in Chrome, click CastReader, and listen while doing anything else.
We are living through a fundamental shift in how humans process written content. The average person encounters more text in a single day than a medieval scholar read in a year.
Audio transforms dead time into learning time. Your morning commute, evening walk, or household chores become opportunities to absorb articles, research, and stories.
CastReaderReads Medium articles aloud — word-by-word highlighting follows along
Consume more articles without staring at a screen
One Click
Open any Medium article — free or member-only (if you're subscribed) — and click the CastReader icon. It starts reading immediately.
Smart Extraction
CastReader's content extraction algorithm identifies the article body and skips navigation, sidebars, comments, and ads. You hear only what matters.
Follow Along
Each paragraph is highlighted as it's read aloud. Click any paragraph to jump there. Perfect for long reads.
100% Free
Completely free with no usage limits. No signup, no subscription. Install and start listening to every Medium article you find.
Everything you need to know about listening to content with CastReader
Install CastReader from the Chrome Web Store, open any Medium article, and click the CastReader icon in your toolbar. It will read the article aloud with natural AI voices.
Yes. If you're a Medium member and can see the full article in your browser, CastReader can read it aloud. It reads what's on your screen.
Yes. CastReader's extraction algorithm identifies the main article content and ignores navigation, sidebars, related posts, and clutter.
Completely free with no limits. No signup needed.
Yes. Adjust speed from the floating player to read faster or slower.
Yes. The current paragraph is highlighted and the page auto-scrolls to follow along.
CastReader supports 40+ languages. It will read Medium articles in any supported language with natural-sounding AI voices.
Yes. CastReader is available on both Chrome and Edge.
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
完全免费。无需注册。没有限制。安装即可开始收听。
★★★★★ 4.7 · Free · No login · No limits