Colibrio Reader for EPUB & PDF

3.7
105 reviews
5K+
Downloads
Content rating
Everyone
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About this app

The Colibrio Reader is an implementation of the Colibrio Reader Framework, the most advanced development framework for building digital reading systems.

Colibrio Reader supports all of the features in EPUB3, including,

* Talking Books (Media Overlays)
* Interactivity (Scripting)
* Reflowable and Fixed Layout
* Text to Speech
* Bookmarks
* Annotations

and much more!

We have chosen to make this app free to all to help people that are looking for an accessible e-reader and to help promote EPUB as a format.

This app will be updated regularly with all our latest features at the time they reach their Beta stage. So you can look forward to a steady stream of fun new features!

A note to screen reader users, the app works best when used with the Google TalkBack service. Also, for accessibility testers, please turn on TalkBack before you start the app.

Now go read a good book!

We are looking forward to your feedback!
Updated on
Dec 8, 2025

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
App activity, App info and performance, and Device or other IDs
No data collected
Learn more about how developers declare collection
Data is encrypted in transit

Ratings and reviews

3.4
97 reviews
Raymond Glenn Collins
February 9, 2026
Great app for reading EPUBs, uses CSS file to format books correctly and has loads of options to customize the look and feel of the books. It would be great to have extra options in the book-list section, to be able to sort them by filename, author and last read. The TTS option is good but reads a little slowly (I was using my phone); great for testing epubs to see what works and what doesn't when designing them for accessability. Having to confirm closing a book each time is annoying, though.
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Colibrio Software AB
February 9, 2026
Thanks for your kind words 🙏😊 I am very happy to announce that our next release adds all the goodies you have asked for to the bookshelf! Regarding the close notification, I think that I agree actually. Let me think a bit about it 🙂 TTS speed can be changed in the options menu in the read aloud controls popup 👍 Cheers from your Colibrio friends
Ramesh L
February 9, 2026
A refreshing new kid on the block—this ebook reader is sleek, functional, and surprisingly versatile. The customization options already make reading a joy, but imagine the possibilities if external fonts and possibly a solar theme were supported. That little touch could turn a good reader into a great one!"
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Alter Ego
February 19, 2026
I installed the app to use the media overlay feature, but the EPUB audio stops playing once the screen turns off. Please enable audio playback in the background.
Did you find this helpful?
Colibrio Software AB
February 19, 2026
Hey there 🙂 Thanks for taking the time to write a review! I am happy to report that background playback for Media Overlays (synchronized audio and text) is coming in a bit 👍 Thanks again, Your friends at Colibrio

What’s new

Just in time for the holidays comes a new release, packed with fulfilled wishes and fixes ☃️🎁

- You can now import multiple files!
- Upgraded to the freshest Colibrio Framework 5.0.0-rc.1.
- You can now customize highlight colors in Media Overlay books.
- Word highlighting is now optional when listening to TTS.
- You can now customise if and how you want to display reading progress.
- Much improved UX when using the reading in windowed and split screen mode.
- Other improvements.

👋😊