Batch convert from FB2 to other formats.
Large FB2 files are supported.

If you don't know how to view an FB2 file, you can convert it to another format you already recognize. You can use MConverter for the conversion.

Yes, MConverter supports batch converting of multiple FB2 files at once. You can even drag and drop folders containing FB2s.
Pasting FB2 files and folders copied in the clipboard also works: use Ctrl+V.

Yes, with MConverter Max you can convert big FB2s, up to 10 gigabytes each.
The free version lets you convert files up to 100 MB. If you need to convert FB2 files over 100 megabytes, try MConverter Max. If your files aren’t over 1 GB, then you can use MConverter Plus instead, as it’s cheaper.

For cloud-based conversions, MConverter encrypts your FB2 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 FB2s and other converted 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.
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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).