E-Books converters

Convert e-book formats between Kindle, EPUB, Comic Book and PDF.

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Convert or process e-books files.

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About the E-Books suite

Convert e-book formats between Kindle, EPUB, Comic Book and PDF. The suite currently includes 11 live tools. Use the uploader above for a quick conversion, or open a specific tool when you need the options, limits and processing details for that pair. Each tool page also states its processing model and limits so you can choose a path before running a batch.

What you can do here

  • MOBI to EPUB: Convert Mobipocket E-Book (MOBI) to Electronic Publication (EPUB) online instantly.
  • EPUB to MOBI: Convert Electronic Publication (EPUB) to Mobipocket E-Book (MOBI) online instantly.
  • EPUB to AZW3: Convert Electronic Publication (EPUB) to Kindle Format 8 (AZW3) online instantly.

Formats in this suite: MOBI, EPUB, AZW3, FB2, PDF, CBZ, CBR, DJVU, TXT, HTML.

To choose a tool, start with the source format and the output the destination actually accepts. Use the suite uploader for a quick first pass, then open a specific tool when you need quality, page-range, bitrate or dimension controls. Keep the original file until the result has been opened and checked in the application where it will be used.

Formats in this suite

FormatExtensionMIMENotes
AZW.azwapplication/octet-streamAZW e-book format
AZW4.azw4application/octet-streamAZW4 e-book format
AZW8.azw8application/octet-streamAZW8 e-book format
AZW9.azw9application/octet-streamAZW9 e-book format
BEB.bebapplication/octet-streamBEB e-book format
CEB.cebapplication/octet-streamCEB e-book format
CEBX.cebxapplication/octet-streamCEBX e-book format
FBZ.fbzapplication/octet-streamFBZ e-book format
HTM.htmapplication/octet-streamHTM e-book format
HyperText Markup Language.htmltext/htmlHTML e-book format
IBOOKS.ibooksapplication/octet-streamIBOOKS e-book format
K2U.k2uapplication/octet-streamK2U e-book format

Frequently asked questions

What can I do in the E-Books suite?
Convert e-book formats between Kindle, EPUB, Comic Book and PDF. The suite currently contains 11 converters, including MOBI to EPUB, EPUB to MOBI, EPUB to AZW3. Each tool page explains its limits and processing model.
Are the E-Books tools free?
Yes. The tools are free, require no account, and add no watermark. Server-backed conversions accept files up to 100 MB, while browser-first tools depend on device memory.
Which formats are supported in this suite?
Catalogued format pairs include MOBI, EPUB, AZW3, FB2, PDF, CBZ, CBR, DJVU, TXT, HTML. Use the converter directory or search to find a specific pair.
Do I need to install anything to use the E-Books tools?
No. The tools run in a current browser. Some conversions use a server-side engine behind the upload form, but no desktop application or plugin is required.
Can I convert multiple files at once?
Yes. Most tools support a batch queue, with individual downloads or a ZIP of the completed files.
How do I choose the right tool in the E-Books suite?
Start with the source format and the format the destination requires. For a quick first pass, use the suite uploader. If the result needs specific options, open the tool page and review its limits, processing model and FAQs before running a batch.