Best Free EPUB Readers
Choosing the right EPUB reader makes a big difference in your reading experience. Here are the best free EPUB reader apps for every platform in 2026.
Windows
1. Microsoft Edge (Built-in)
Drag and drop any EPUB into Microsoft Edge — it has a built-in reader with font customization, themes, and read-aloud. No install needed since Edge comes with Windows.
2. Calibre
The most powerful free ebook manager. Calibre reads EPUB, converts formats, edits metadata, and manages large libraries. It's heavier than a simple reader, but unmatched for power users. Compare Calibre vs Epublys.
3. Sumatra PDF
A lightweight, fast reader that handles EPUB, PDF, MOBI, and more. Minimal interface, fast startup. Great if you just want to read without extra features.
Mac
1. Apple Books (Built-in)
Pre-installed on every Mac. Double-click any EPUB to open it. Syncs with iPhone/iPad via iCloud. Clean reading experience with night mode and font options.
2. Calibre
Same powerful ebook manager available for Mac. Best for managing large collections.
Android
1. Google Play Books
Upload your own EPUBs for free at play.google.com/books. Syncs across devices, supports highlights and bookmarks. See our Android EPUB guide for details.
2. ReadEra
Free, ad-free, and works offline. Supports EPUB, PDF, MOBI, and more. No account needed.
3. Moon+ Reader
10M+ downloads. Rich customization, text-to-speech (Pro), cloud sync.
iPhone & iPad
1. Apple Books (Built-in)
The default choice. Open any EPUB from Mail, Files, or Safari. iCloud sync, night mode, and excellent typography.
2. KyBook 3
A powerful alternative with OPDS catalog support, cloud storage integration, and advanced reading features.
Linux
1. Calibre
Available for all major Linux distributions. The go-to ebook manager on Linux.
2. Foliate
A modern, minimal EPUB reader built for GNOME. Fast, clean, and supports annotations.
Online (Browser)
Need to quickly view or work with an EPUB without installing anything? Epublys lets you validate, edit metadata, compress, or convert to PDF directly in your browser.
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