Read Aloud EPUB

Read Aloud EPUB

Turn ebooks into audio you can follow. Upload an EPUB and listen with natural AI voices while reading along with synchronized highlighting, auto-scrolling, and chapter navigation. Keep your place, pick up where you left off, and finish more books with less screen time.

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Natural AI voices

Enjoy voices that sound natural and stay pleasant even during long chapters.

  • A wide range of voices across major languages
  • Multilingual voices for mixed-language ebooks
  • Switch voices and adjust speed anytime
Alloy HD
balanced, neutral, versatile
Echo HD
clear, steady, straightforward
Onyx HD
deep, strong, resonant
Nova HD
bright, friendly, approachable
Shimmer HD
light, crisp, expressive

Chapter navigation

Move through your book with structure.

  • EPUB keeps chapters and sections, so you can jump to the part you want without losing your place.
  • Helpful for textbooks, long novels, and chapter-based learning.

Table of Contents

Text Highlight

Follow along as it reads.

  • Sentences highlight in real time while the page automatically scrolls to the current text.
  • Stay focused during long reading sessions and return to any passage easily.

Reading and listening simultaneously creates a powerful learning experience that enhances comprehension and retention.

Our synchronized highlighting keeps your eyes on the text while your ears take in the information.

Smart Speed Control

Listen faster or slow down to learn.

  • Choose from convenient presets (0.75x, 1.5x, 2.5x) or fine-tune to your exact preference.
  • Speed up for quick reading or slow down for complex chapters and new vocabulary.

Playback Speed

1x

Cloud Library Sync

Pick up where you left off.

  • Your listening progress is saved so you can continue later without searching for your last chapter.
  • Progress indicators help you track books in your personal library.
Library Sync
Syncing...
Research_Paper_final.pdf
PDF • Just now
78%
The Great Gatsby.epub
EPUB • 2m ago
42%
Lecture_Notes_W4.pdf
PDF • 1h ago
12%

Multiple File Formats

More than ebooks.

  • Readio supports PDF, EPUB, DOCX, TXT, and more so you can listen to documents, ebooks, and drafts in one place.
  • Use one library for reading and listening across formats.
PDF
Portable Document
EPUB
E-Book Format
DOCX
Word Document
TXT
Plain Text
HTML
Web Page
URL
Web Link
ODT
Open Document
RTF
Rich Text

How to Read Your EPUB Aloud

Upload your ebook, choose a voice, and press play. Highlighting and chapter navigation help you stay on track.

Step 1

Upload Your EPUB

Drag and drop any EPUB file into Readio. Great for books, textbooks, and structured reading.

Step 2

Select Voice

Choose a natural AI voice and adjust speed, language, and preferences anytime.

Step 3

Listen

Press play and follow along with highlighting and chapter navigation. Pause and continue later whenever you want.

Who uses Readio

Listen to ebooks so you can read more, stay focused, and keep your place without staring at the screen.

Book lovers

Book lovers

Listen to novels and nonfiction while commuting, doing chores, or relaxing at home.

Language learners

Language learners

Improve comprehension by listening while following highlighted text. Adjust speed and replay any section.

Accessibility

Accessibility

Reduce eye strain and make long books easier to consume. Listen at your own pace with clear voices.

Frequently asked questions

Yes. You can read EPUB files aloud directly in your browser with Readio. Free usage comes with limits, but you can start listening right away. If you need higher limits or MP3 export, you can upgrade anytime.
Yes. EPUB files include chapter structure, and Readio uses it to help you navigate by sections. You can jump to different chapters and continue from where you left off.
Yes. Readio works on modern mobile browsers, so you can listen to EPUB files on iPhone, iPad, Android phones, and tablets without downloading an app. For the best experience, use Chrome or Safari and keep the page open while audio plays.
Yes. MP3 download is available for paid users. Free users can listen online, and upgrading unlocks MP3 export for offline listening and reuse.
Not currently. DRM-protected ebooks usually cannot be processed by web-based readers. If your file is DRM-free, it should work normally.
Readio supports most major languages and a wide range of natural-sounding voices. We also provide multilingual voices, which are useful if your ebook contains mixed languages.
We take privacy seriously. Your file is processed to provide read-aloud playback and is not publicly shared. If you are working with sensitive content, avoid uploading confidential personal data and check our Privacy Policy for details.

Ready to start?

Start listening in seconds.

Upload your EPUB and start reading aloud right away.

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