Common questions about converting to KEPUB
Is converting to KEPUB safe with MConverter?
For cloud-based conversions, MConverter encrypts your files using the latest technologies, such as TLS 1.3 and HSTS. They are transmitted securely to our cloud service provider’s EU-based data center, which holds internationally recognized ISO 27001 and SOC 2 certifications. There, each conversion is processed in a separate, isolated environment. This technique further reduces the risk of a malicious file impacting other conversions.
Four hours after the conversion is complete, your files are automatically deleted from MConverter’s systems. You can also permanently delete your files immediately after finishing the conversion with the trash icon.
When converting on-device, your files never leave your device. MConverter processes them locally. Note: on-device conversions are not yet available for some hardware-intensive formats.
For both cloud and on-device conversions, your files are never scanned or shared with third parties for marketing purposes.
Join thousands who have trusted MConverter to process over 20,519,460 files so far.
Four hours after the conversion is complete, your files are automatically deleted from MConverter’s systems. You can also permanently delete your files immediately after finishing the conversion with the trash icon.
When converting on-device, your files never leave your device. MConverter processes them locally. Note: on-device conversions are not yet available for some hardware-intensive formats.
For both cloud and on-device conversions, your files are never scanned or shared with third parties for marketing purposes.
Join thousands who have trusted MConverter to process over 20,519,460 files so far.
Can I convert to KEPUB in bulk?
Yes, MConverter supports batch converting to KEPUB. You can even drag and drop folders to convert to KEPUB.
Pasting files and folders copied in the clipboard also works: use Ctrl+V.
Pasting files and folders copied in the clipboard also works: use Ctrl+V.
Can I convert a file to KEPUB, if its size is 10 GB?
Yes, with MConverter Max you can convert big files, up to 10 gigabytes each.
The free version lets you convert files up to 100 MB. If you need to convert files over 100 megabytes to KEPUB, try MConverter Max. If your files aren’t over 1 GB, then you can use MConverter Plus instead, as it’s cheaper.
The free version lets you convert files up to 100 MB. If you need to convert files over 100 megabytes to KEPUB, try MConverter Max. If your files aren’t over 1 GB, then you can use MConverter Plus instead, as it’s cheaper.
How long does it take to convert a file to KEPUB?
For most e-books, the wait is normally a few minutes. However, MConverter also supports converting larger e-books, meaning that it could take a while (up to over an hour, for example).
What is a KEPUB file?
| File extension | .kepub |
|---|---|
| Alternative filename extension | .kepub.epub |
| Category | E-book file formats |
| Developed by | Rakuten Kobo |
| Mime type | application/epub+zip |
Format description
KEPUB is Kobo’s enhanced version of the EPUB format for e-books. Its main use is for Kobo eReaders and Kobo reading apps.Kobo’s reading software treats KEPUB files differently from regular EPUB files, enabling Kobo-specific features such as improved reading statistics, faster page turns, better footnote handling, and its own rendering behavior.
To be correctly recognized as a KEPUB by Kobo eReaders, the file needs to end with .kepub.epub instead of .kepub. It’s also important to note that the e-book needs to be specifically converted with a tool like MConverter, as simply renaming a regular .epub file to .kepub.epub is not enough.
Note: DRM-protected Kobo books may fail to convert at the moment.
Converter to KEPUB Rating
4.7
48 votes
Latest conversion engine update
June 2, 2026.
View the changelog
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