Don't just open your EPUB files. Turn them into immersive audiobooks. Upload your favorite ebook and start listening in seconds—no app installation needed.
Standard ebook readers force you to stare at a screen. We set your library free.
Smart Parsing
Copy-pasting from a PDF is a mess. EPUBs are different. Our reader understands book structure. It recognizes chapters, ignores messy formatting code, and reads the story seamlessly from start to finish.
Commute Friendly
You can't read a Kindle while driving or walking to the subway. But you can listen. Convert your EPUB library into a playlist and finish more books this year by utilizing your 'dead time' effectively.
Language Learning
Reading a foreign language novel is hard. Listening while reading along is the cheat code for fluency. Load an EPUB in your target language and let our native AI voices teach you the correct pronunciation and rhythm.
No Bloatware
Calibre is great, but it's heavy. CastReader runs entirely in your browser. Whether you are on a Chromebook at school or a borrowed laptop, your personal audiobook reader is just one click away.
Common questions about reading and listening to ebooks
Yes, as long as the EPUB is DRM-free (not locked by digital rights management). Most books from Project Gutenberg, Humble Bundle, or direct-author downloads work perfectly.
Yes. It is a completely free online tool. We don't charge you to open the file or to convert the text to speech. Read as many books as you want.
Since we prioritize privacy and don't require accounts, we don't store your reading progress on our servers. We recommend keeping the tab open or downloading the audio of the chapter you just finished.
Those are walled gardens designed to sell you books. We are an open tool designed to help you consume the files you already own. Plus, our AI voices are generally more customizable and natural than standard device text-to-speech.
Yes! The site is mobile-friendly. You can open it in Safari or Chrome on your phone, upload an EPUB, and listen with your screen off (depending on your browser settings) or while browsing other tabs.
Our tool focuses on extracting the text for audio narration. While we process the book structure, we skip over images to ensure a smooth listening experience without awkward pauses or descriptions.
EPUBs are usually cleaner than PDFs, but sometimes they have odd line breaks. Our smart cleaner tries to fix these automatically so the narrator doesn't pause in the middle of... a sentence.
For very long books, we recommend generating and downloading chapter by chapter. This keeps the file sizes manageable and ensures the browser doesn't time out during processing.
File not opening correctly? Send it to our debug team