EPUB Fixer

Fix common EPUB file problems and save a repaired copy.

EPUB Fixer helps you inspect EPUB files that do not open correctly, have broken internal references, or contain structural issues that prevent them from working as expected.

Choose an EPUB from your device and prepare a safe session for that file. The app checks important EPUB structure components such as mimetype, container.xml, OPF package data, manifest entries, and spine references.

When supported problems are found, EPUB Fixer guides you through a repair flow to correct broken references, rebuild the EPUB structure when possible, and save the repaired result as a new EPUB file.

With EPUB Fixer, you can:

• Select EPUB files from your device

• Prepare a safe session for each file

• Diagnose common EPUB structure issues

• Check mimetype, container.xml, OPF, manifest, and spine data

• Detect broken references and missing package files

• Repair supported EPUB structure problems

• Rebuild the EPUB when possible

• Save a repaired EPUB as a new copy

• Keep the original file unchanged

• View repaired and imported files in My EPUBs

• Adjust language and theme settings

• Remove ads with an upgrade option

EPUB Fixer also handles problematic files more clearly, including files that use the .epub extension but are not real EPUB files.

Everything is processed on your device.

No accounts.

No uploads.

No cloud conversion.

Some repairs may require watching a rewarded ad in the free version. If an ad cannot load, the app provides a fallback so the flow remains understandable.

EPUB Fixer is made for readers, collectors, students, and anyone managing a digital library who needs a simple way to troubleshoot EPUB files without complicated desktop software.

The app focuses on one practical job: helping you diagnose, repair, and safely save supported EPUB fixes.