How to Import EPUB Files on Android (3 Easy Methods)

TL;DR: The three easiest ways to import EPUBs on Android are (1) Open With from any file app, (2) import from Downloads or book folders inside FluttX, and (3) open shared files from Drive, email, or messaging apps.

Method 1 — Open With from any file manager

This works for EPUBs saved anywhere on your phone.

1. Open your Files or Downloads app.
2. Locate the .epub file.
3. Long-press → Open with (or tap the file).
4. Choose FluttX Reader.
5. The book is parsed and added to your Library automatically.

If FluttX does not appear, tap More apps or install it from Google Play first, then retry.

Method 2 — Import from Downloads or book folders

If you collect ebooks in standard folders:

1. Open FluttX Reader.
2. Go to Library.
3. Tap Import books (or the import action in the menu).
4. FluttX scans common directories — Downloads, Documents, Books.
5. Select titles to add; duplicates are skipped.

This is ideal after bulk downloads from Project Gutenberg or Standard Ebooks.

Method 3 — Open from Google Drive, email, or chat apps

Shared EPUBs usually arrive as content links, not plain files.

1. Tap the attachment in Gmail, WhatsApp, Telegram, or Drive.
2. Select Open with FluttX Reader.
3. Wait for import to finish — large files may take a few seconds.
4. Start reading from your Library.

FluttX 1.6+ improved support for large EPUBs opened from Android file providers.

What if the EPUB is large or will not open?

Try these steps:

• Confirm the format — FluttX opens .epub and .pdf files; .mobi, .azw and other Kindle formats are not supported.
• Check for DRM — library loans and store purchases are often locked; FluttX only opens DRM-free books.
• Re-download — a partial download can corrupt the archive; get a fresh copy.
• Free storage — very large illustrated EPUBs need free space for extraction.

Calibre exports from your personal library work well — use EPUB output with DRM stripped.

How does FluttX detect duplicates?

When you import the same book twice, FluttX compares title, author, and file fingerprint. A duplicate import is ignored instead of creating a second library entry. That keeps your shelf clean when you re-download or receive the same file from multiple sources.

New to EPUB on Android? See our best EPUB reader guide or browse free classics.