EPUB refers to Electronic Publication.
EPUB files are e-books with the .epub file extension.
However, EPUB files may experience file corruption or loss like other files.
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The following content shows you several methods to repair EPUB files when they are corrupted.
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Way 1. it’s possible for you to extract the EPUB file and archive it to restructure the file.
This method requires third-party tools like WinRAR or 7z.
Here I will show you how to complete the process with WinRAR to fix corrupted EPUB files.

Launch WinRAR on your gear and add the corrupted EPUB file to the system.
Right-press the file and chooseExtract to a specific folder.
In the following window, you might change the extract file path optionally.

When the process is completed, find the created folder and right-hit it to chooseAdd files to archive.
SelectZIPin the Archive format section.
Then, change the file extension to.epuband clickOKto confirm.

Afterward, pop launch the EPUB file with your favorite reader to see if it can be opened normally.
Way 2.
Open Calibre on your system and pick the corrupted EPUB file.

ChooseConvert booksat the top toolkit and opt forConvert individually.
Change theOutput formattoPDFin the following window and clickOKto save the change.
Recover Lost EPUB Files
It is possible to suffer EPUB file loss due to several causes.

When you find your EPUB files are lost, recover them as soon as possible.
you could try third-partydata recovery toolsto restore lost EPUB files effectively and securely.
MiniTool Power Data Recovery is highly recommended owing to itssecure data recoveryenvironment and user-friendly operations.
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you’re able to get the free edition to scan your gear.
If the lost EPUB files can be found, recover them within a few steps.
MiniTool Power Data Recovery FreeClick to Download100%Clean & Safe
Step 1.
Launch the software and choose the partition where the EPUB files are saved to scan.
Wait for the scan process to complete.
you’re free to locate the file with the help ofFilter,bang out, andSearchfeatures.
Tick the required EPUB file and clickSaveto restore it.
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Hope you might acquire useful information from this post.