You have an .epub file on your iPhone. You tap it. iOS shows you a wall of text in Quick Look, or worse — nothing happens. The file is right there, but there’s no obvious way to actually read it as a book.
That’s because iOS doesn’t have a built-in EPUB reader the way macOS does. Apple Books exists, but it’s designed for buying books from Apple’s store, not for importing your own files. Getting a sideloaded EPUB into Apple Books is hit-or-miss, and even when it works, your metadata and cover art often don’t survive the import.
Here’s how to actually read EPUB files on your iPhone or iPad — reliably.
What Is EPUB?
EPUB is the universal ebook format — an open standard used by virtually every bookstore and publisher except Amazon. Unlike PDF, EPUB text reflows to fit any screen size, supports adjustable fonts, and works with accessibility features like VoiceOver. It’s the ideal format for reading on a phone.
Getting EPUB Files onto Your iPhone or iPad
Before you can read an EPUB, you need to get it onto your device. Here are the most common methods:
AirDrop from a Mac
If the file is on your Mac, AirDrop is the fastest option. Right-click the .epub file in Finder, select Share > AirDrop, and choose your iPhone or iPad. When the file arrives, tap it and choose Open in BookShelves (or your preferred reader app).
iCloud Drive or Cloud Storage
Save the EPUB to iCloud Drive, Dropbox, Google Drive, or OneDrive from any computer. On your iPhone, open the Files app, navigate to the file, and tap it. From the share sheet, choose your reader app.
Email the EPUB to yourself as an attachment. Open the email on your iPhone, tap the attachment, then use the share button to open it in your reader app. This works well for single files but isn’t practical for large collections.
Download in Safari
If you’re downloading an EPUB from a website — Project Gutenberg, Standard Ebooks, or a publisher’s DRM-free store — Safari downloads the file to your Downloads folder in the Files app. Find it there and open it in your reader app.
Direct Download in BookShelves
BookShelves has a built-in Discover tab with access to Standard Ebooks, Project Gutenberg, Internet Archive, and more. Browse, search, tap to download — the book lands in your library without ever leaving the app.
The Best EPUB Reader Apps for iPhone and iPad
BookShelves (Best for Personal Libraries)
BookShelves is a native iOS reader built for people who manage their own ebook collections. It reads EPUB, PDF, MOBI, AZW, AZW3, FB2, CBZ, CBR, and CB7 — all in one app.
How to get started:
- Download BookShelves from the App Store
- Tap the + button and choose Add Books, or open an EPUB from the Files app and share it to BookShelves
- Start reading
What you get:
- Metadata extraction. Titles, authors, cover art, and language are read from the file automatically on import.
- Kindle format support. MOBI, PRC, AZW, and AZW3 files are auto-converted to EPUB on import — no computer needed.
- iCloud sync. Your entire library — books, reading position, bookmarks, highlights — syncs across iPhone, iPad, and Mac.
- Adjustable reading experience. Choose from 10 fonts (including OpenDyslexic), adjust line spacing, margins, and paragraph spacing. Pick from multiple reading themes.
- Highlight export. Export your annotations as Markdown, JSON, or CSV.
- Comic books. CBZ, CBR, and CB7 files render with proper page-by-page display.
- Built-in catalog. Browse and download thousands of free public domain classics from Standard Ebooks, Project Gutenberg, and Internet Archive — directly in the app.
- EPUB repair. Books with formatting issues are automatically fixed during import.
BookShelves is free for up to 10 books. The Pro upgrade removes the limit and adds iCloud sync, highlight export, and more.
Apple Books
Apple Books comes pre-installed on every iPhone and iPad. For books purchased from Apple’s Book Store, it works well. For sideloaded EPUBs, the experience is inconsistent.
How to import: Open an EPUB file, tap the share button, and look for Copy to Books or Open in Books. Sometimes it appears; sometimes it doesn’t — Apple doesn’t surface this option reliably for all EPUB files.
Limitations:
- Unreliable sideloaded import. Files sometimes fail to import, import without cover art, or silently duplicate.
- No metadata editing. Wrong title or missing author? You’re stuck with it.
- No MOBI/AZW support. Kindle-format files can’t be opened.
- No annotation export. Highlights and notes are locked inside Apple Books.
- No comic book support. CBZ, CBR, and CB7 aren’t recognized.
- No OPDS. Can’t connect to content servers or free book catalogs.
Apple Books is fine for buying and reading books from Apple’s store. For managing a personal library on your iPhone, it’s not the right tool.
Kindle
Amazon’s Kindle app can open EPUB files — Amazon began accepting EPUB through its Send to Kindle service in 2022. But the Kindle app is optimized for Amazon’s ecosystem, not for managing a collection of files from various sources. There’s no metadata extraction, no format conversion for other Kindle formats, and no iCloud library sync.
How to Open an EPUB File on iPhone or iPad
Once you have a reader app installed, opening an EPUB follows the same pattern regardless of how the file arrived:
- Find the file — in Files, an email attachment, a Safari download, or an AirDrop notification
- Tap the file to preview it, then tap the share button (the square with an arrow)
- Choose your reader app from the share sheet — BookShelves, Apple Books, or Kindle
- Start reading — the book is imported into your library
You can also open files directly from within BookShelves. Tap + in the toolbar, choose Add Books, and browse for your EPUB using the system file picker. It can access local storage, iCloud Drive, and any connected cloud provider.
For the full list of import methods, see our importing books guide.
Where to Find Free EPUBs
- Standard Ebooks — Beautifully formatted public domain classics.
- Project Gutenberg — Over 70,000 free ebooks.
- Internet Archive — Millions of books, many in EPUB format.
- BookShelves built-in catalog — Browse and download free books without leaving the app.
For a deeper list, see our guide to DRM-free ebook stores and 30 best free classic books.
Tips
- Use BookShelves + iCloud for the smoothest workflow. Import books on your Mac (drag and drop is fastest), and they automatically appear on your iPhone and iPad.
- DRM blocks everything. Adobe DRM-protected EPUBs only work in apps that support Adobe DRM. DRM-free EPUBs work in any reader. If a file won’t import, DRM is usually the reason.
- Already have Kindle books? BookShelves imports MOBI, AZW, and AZW3 files directly on iPhone — they are auto-converted to EPUB during import. See our AZW3 on iPhone guide for details.
- Have a Mac too? See How to Read EPUB Files on Mac for the desktop companion guide.
- Looking for alternatives to Apple Books? Our roundup of the best alternatives compares your options side by side.
