Notion is where your notes, docs and team wikis live — but it still can't read any of it to you. CastReader adds the missing read-aloud: open a page on notion.so, press play, and listen in a natural AI voice while each block highlights in sync.
Our primary objective for Q2 is to expand the platform to support three new content formats while maintaining our current reliability standards above 99.9 percent uptime.
Key initiatives include the mobile app redesign, API versioning system, and the new collaboration features that our enterprise customers have been requesting since last quarter.
Reads Notion documents aloud — word-by-word highlighting follows along
Turn your knowledge base into a podcast
Works Everywhere
Personal PKM notes, team wikis, project specs, meeting minutes, published Notion sites — if it opens in your browser, CastReader can read it. No exporting, no copy-pasting into a separate TTS app, no losing your place.
Smart Extraction
Notion isn't flat text — it's toggles, callouts, quotes, code blocks, columns and synced blocks. CastReader's extraction engine follows the block structure and reads content in the order you actually see it, instead of jumping around the page like generic screen readers do.
Follow Along
Each block lights up as it's read, so your eyes and ears stay in sync. Click any block to jump straight to it — handy for skimming a long spec to the part you care about, or replaying one decision from last week's meeting notes.
Study & Review
Morning catch-up on meeting notes, spaced review of study cards, proofreading your own draft by listening — hearing your notes catches gaps your eyes skip. Set 1.5–2× speed and get through a week of notes on one walk.
On the Go
Reading a long doc at your desk but need to leave? Send it to your phone with one click and keep listening in the CastReader app on your commute — no hunting for where you stopped.
Multilingual
English wiki, Chinese meeting notes, Japanese study cards — voices automatically match the page language with natural AI pronunciation, not robotic word-by-word spelling.
Free to Use
Install and listen right away — standard voices are free with no signup. CastReader Pro adds premium ultra-realistic voices, more listening hours, voice cloning and AI document analysis whenever you want the upgrade.
Everything you need to know about listening to Notion with CastReader
Install CastReader from the Chrome Web Store, open any Notion page in your browser, and click the CastReader icon. It reads the page aloud with natural AI voices — each block highlights as it plays, and you can click any block to jump there.
As of 2026, Notion has never shipped a read-aloud feature — not on web, desktop or mobile. Notion AI writes and summarizes, but it can't speak your notes either. That's the gap a browser-level reader like CastReader fills.
CastReader reads the page as you see it. If a toggle is collapsed and you want its content included, open it before pressing play — tip: Ctrl/Cmd+Alt+T in Notion expands or collapses all toggles on the page at once.
Callouts read like normal paragraphs, so warnings and tips keep their place in the flow. Code blocks stay in reading order, though listening to raw code is rarely useful — click the next block to skip ahead when you hit one.
CastReader works best with text-heavy pages like documents, notes, and wikis. Tables and databases are partially supported — it reads the text content within them, but a board view full of one-word cards won't make great audio.
A nested page is its own page in Notion, so open it and press play again. Multi-column layouts follow the page's block structure; if a section reads in an order you don't want, click the block you care about and start from there.
No. Notion AI drafts, summarizes and answers questions about your workspace, but it has no text-to-speech. CastReader is the listening layer on top: whatever is on the page — including AI-generated content — it can read aloud.
CastReader is a browser extension, so it works on notion.so in Chrome or Edge. The Notion desktop app doesn't support extensions — but the web app is identical and your whole workspace is there.
Use Send to Phone: start playback on desktop, click once, and the audio continues in the CastReader iOS or Android app from the same spot. Mobile browsers don't support Chrome extensions, so this hand-off is the smoothest path.
Yes. Any Notion page you can view in your browser can be read aloud — shared workspace pages, public docs, and sites published with Notion's 'Share to web'.
Yes, long wikis and specs are fine. Free-tier listening uses standard voices; if you listen for hours every day, CastReader Pro adds more listening time and premium ultra-realistic voices.
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.
40+ languages with natural AI voices. The voice automatically matches the language of your Notion page, and mixed-language workspaces are fine — detection happens per page.
CastReader reads the text on the page you're viewing and sends it to our voice API for audio generation. We don't store your page content and we never access your Notion account or workspace.
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Read Medium articles aloud with natural AI voices
Press Quickread and have the page explained in your language — key points marked by a moving pen
Hard numbers — not vibes — from authoritative sources
$2.22 billion
US audiobook sales in 2024, up 13% year-over-year (Publishers Weekly / Audio Publishers Association)
Source →51%
of US adults have listened to an audiobook in 2025 — roughly 134 million people (APA Consumer Survey 2025)
Source →2.2 billion
people globally with near- or far-vision impairment (WHO Fact Sheet, 2024). TTS is the primary access path for digital reading content.
Source →78%
of audiobook listeners multitask while listening — commute, chores, exercise (Audiolibrix Great Audiobook Survey, 2024)
Source →27.2 minutes
average single-trip US commute in 2024, up from 26.8 (US Census ACS via Statista). That's nearly an hour each day of audio-only time.
Source →effect size 0.35
measured comprehension lift from TTS for reading-disabled students across 22 studies (Wood, Moxley, Tighe & Wagner, Journal of Learning Disabilities, 2018)
Source →15.5 million
US adults with ADHD per CDC 2024 — about half diagnosed in adulthood (CDC MMWR, October 2024)
Source →Every Chrome Web Store review below is verifiable at the link in each card. We don't hide negative feedback — we answer it within 24 hours.
“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
Replied by CastReader founder Yan Xu within 48 hours: acknowledged the issue, shipped a bookmark feature in the following release. Reviewer's verbatim feedback drove the v1.2 roadmap.
“Need to highlight text and select it.”
“Hard to select text.”
↪ Founder reply
Replied by CastReader founder Yan Xu within 24 hours: apologized, asked which site/browser the issue occurred on, provided a workaround using the keyboard shortcut, and offered direct support at support@castreader.ai.
We re-test, re-write, and ship continuously. Every entry has a real date.
Rewrote landing pages with verbatim Chrome Web Store testimonials, real audiobook market data, and tested-12-extensions methodology. Every claim now has a sourceable link.
Telegram audio streaming now auto-turns pages reliably across Kindle Cloud Reader and Apple Books. Reduces session interruptions by ~70% in internal testing.
Wrote up the OCR pipeline: how CastReader handles Amazon's 184 random font alphabets and 361 unique glyphs per Kindle book. Shared in dev.to.
Native macOS app reads Kindle for Mac with word-level highlighting. Floating player + system-wide hotkeys. No browser needed.
Ranked #10 in Daily, 99 upvotes, 4 community comments shaped the v1.2 roadmap.
Switched from older TTS engines to Kokoro neural voices. User reviews shifted from 'usable but robotic' to 'enjoy listening for hours' (verbatim from review by patrick chiang).
OCR success rate improved from 78% to 89% on English-language Kindle books. Multi-column page detection added for academic PDFs.
I built CastReader because I owned hundreds of Kindle books and couldn't listen to them on my morning runs without buying separate Audible copies. The technical problem — Amazon's Cloud Reader font encryption — turned out to be solvable with OCR. The product problem — making it actually pleasant across phones, desktops, and 40+ languages — took two years of iteration. We're a small team. I answer every Chrome Web Store review personally (see testimonials above — including the 3-star and 1-star ones). If something's broken or missing, email support@castreader.ai.
— Yan Xu, founder
Last reviewed: · CastReader Team — reviewed against 2025 testing data
Free to use, no signup — upgrade to CastReader Pro for premium voices, more listening hours, and AI document analysis. Install and start listening.
★★★★★ 4.7 · Free to start · No login · Optional Pro