CastReader — Free Read Aloud for Kindle, Articles, PDFs · TTS + Highlight

Listen to Kindle, PDFs, articles & WeChat books with synced paragraph highlight. 100+ free AI voices. No signup, no limits.

Tired of zoning out mid-article? CastReader reads any long-form webpage out loud while a paragraph-level highlight follows along — your eyes and ears stay locked on the same content. Like a teacher pointing at every line. Built specifically for the platforms where most TTS extensions break: 📚 Kindle Cloud Reader — read entire books with reliable auto page-turn (across 30+ regional storefronts: read.amazon.com / .co.uk / .co.jp / .de / .fr / .in / .com.br / etc.). Handles Kindle's blob image rendering — the reason most TTS extensions fail on Kindle. 🇨🇳 微信读书 (WeChat Read) — canvas-rendered books that block ordinary text extractors. CastReader reads them naturally, with auto chapter advance. 📄 Online documents & collaborative tools — long documents in iframe-heavy editors that other TTS extensions can't reach. Works across major online document and collaborative writing platforms. 🤖 AI chat tools — listen to long AI responses while you do something else. Works with every major AI assistant chat interface. Average response length we handle: 35,000–116,000 characters. 🌐 Long blogs, Medium, Substack, Wikipedia, news, PDFs, Reddit threads — anywhere long-form reading happens. ✂️ Selected text — highlight any passage on any page → click 🎧 → instant read aloud. No need to extract the whole article. What makes it different ✓ Paragraph-level highlight, not word chaos. Most TTS extensions blink one word at a time and you lose the context. CastReader highlights the whole paragraph so you can scan ahead and back. Like reading along w ✓ Auto-scroll keeps the current line visible. Long articles fl look away. ✓ Auto page-turn on Kindle and WeChat books. Entire books playp. Commutes, gym, doing dishes — just keeps going. We're theonly Chrome extension that handles this reliably across all Kindle regional stores. ✓ Resume where you left off. Reload the page, walk away mid-chapter — the extension picks back up. ✓ 9 languages auto-detected from content, not page UI. English, Chinese, Spanish, Portuguese, Japanese, Korean, French, German, Hindi. Reading a Chinese WeChat post while logged into an English Google account? CastRe anyway. ✓ 100+ natural voices. 0.75x to 2x speed. Switchable per languints. How it compares to other TTS extensions 🆓 Free with no usage caps — CastReader: always free ✅ / Mostmo) 📚 Reliable on Kindle Cloud Reader — only CastReader 🇨🇳 Works on canvas-rendered books (微信读书) — only CastReader ✏️ Paragraph-level highlight — CastReader ✅ / Most others: word-only blink 📖 Auto page-turn through entire books — only CastReader ✉️ No signup required — CastReader ✅ / Many others: email required 🌐 Content-based language detection — CastReader ✅ / Most oth on multilingual sites) Built for these readers → Long-form readers who keep losing focus mid-article → Students absorbing dense readings or research papers → ESL learners hearing pronunciation while reading → Commuters and walkers who want their eyes free → ADHD / dyslexic readers needing dual-channel focus → Knowledge workers reading 100K+ char AI responses → Anyone with a 47-book Kindle backlog they want to actually f 100% free. Forever. No account, no email, no credit card. No premium tier, no ad ious device-level usage analytics with opt-out in settings. Fulldisclosure at castreader.ai/privacy — we explain exactly what we track and why. Why this exists Built by indie devs who got tired of paying $13/month for read-aloud and getting a clunky popup that didn't work where we actually read. Most TTS extensions break on the platforms where you'd most want them —ng, WeChat's canvas-rendered books, iframe-nested documents, AIstreaming responses. CastReader is built specifically to make long-form reading on those platforms actually work. If you're nodding along to any of this, give it a try — it's free, takes 5 seconds to install, and you can uninstall in one click if it's not for you. Bonus feature in 1.1.5+: click 📺 on any reading page and the same TTS pipes into a 9:16 vertical overlay with looping gameplay video and TikTok-style word-by-word subtitles. Built as a one-day joke. Genuinely impast one of us. Privacy:https://castreader.ai/en/privacy-policy