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EPUB to MOBI converter

Extract supported EPUB chapter text and write a Palm database with a MOBI6 header and UTF-8 HTML records. MOBI6 text output for older compatible readers, not KF8/AZW3 or current Send to Kindle acceptance.

Free to useNo sign-upRuns in your browser
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Enter the inputs, then select Build legacy MOBI.

Local file only, up to 10 MB. Additional decoded limits apply.

Your result
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Result will appear here

How EPUB to MOBI converter works

Extract supported EPUB chapter text and write a Palm database with a MOBI6 header and UTF-8 HTML records.

The tool processes the supplied input with browser APIs and bundled local libraries.

Concept diagram for EPUB to MOBI converter, showing unencrypted epub book input and the supported output.
Concept diagram; the three operation images are actual browser captures.

How to build legacy MOBI

Supply supported input and review the result.

Choose the supported file

Choose Unencrypted EPUB book. Processing reads the file in this browser.

Input and settings
EPUB to MOBI converter: input and settings in the implemented browser tool
Actual local browser view. Open the image to read it at full size.

Review the conversion settings

Check the supported input and conversion limits below.

Tool result
EPUB to MOBI converter: tool result in the implemented browser tool
Actual local browser view. Open the image to read it at full size.

Review and save the result

Save a legacy MOBI6 text ebook. Check the download in its target application before replacing your source.

Review the details
EPUB to MOBI converter: review the details in the implemented browser tool
Actual local browser view. Open the image to read it at full size.

When to use EPUB to MOBI converter

Prepare text for an older reader

The output is a legacy MOBI6 container. It does not target KF8 or modern Send to Kindle submission.

Source text lines represented as large readable document shapes.
Work with your source text. Concept illustration.

Keep chapter text in reading order

Supported EPUB chapter text is extracted from the spine. Images and original book navigation are omitted.

Text documents with highlighted lines for comparison and review.
Compare and review text. Concept illustration.

Retain the richer ebook

Keep the EPUB for devices that support it. The MOBI output is a simpler text-focused copy.

Text prepared for reuse in another document.
Prepare text for the next task. Concept illustration.

What the output contains

Review the format and conversion policy.

A legacy MOBI6 text ebook. MOBI6 text output for older compatible readers, not KF8/AZW3 or current Send to Kindle acceptance. Images, CSS, navigation and layout are omitted. Keep the EPUB original; up to 2 MB text.

Keep the original while checking the saved output. The result reflects the input and settings you supplied.

A text result and its source shown for careful comparison.
Read the output carefully. Concept illustration.

Supported input and limits

Check these conditions before converting.

MOBI6 text output for older compatible readers, not KF8/AZW3 or current Send to Kindle acceptance. Images, CSS, navigation and layout are omitted. Keep the EPUB original; up to 2 MB text.

The page does not keep inputs or results after leaving. Keep the source and save the output you need.

Text characters and line boundaries represented in a review illustration.
Check characters and line breaks. Concept illustration.

EPUB to MOBI converter: common questions

Answers about using EPUB to MOBI converter and understanding its results.

What output can I save?

Save a legacy MOBI6 text ebook. MOBI6 text output for older compatible readers, not KF8/AZW3 or current Send to Kindle acceptance. Images, CSS, navigation and layout are omitted. Keep the EPUB original; up to 2 MB text.

Does the page upload my input?

No. Processing uses browser APIs and bundled local libraries. The selected file or entered source is not sent to a conversion server. Save the result before leaving.

Build legacy MOBI with your input

Review the supported output and save your result.

Build legacy MOBI