Thread: The difference between converting an .epub to .mobi in Kindlegen vs Kindle Previwer?
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Old 10-28-2019, 07:06 PM   #1
Gregg Bell
Gregg Bell
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The difference between converting an .epub to .mobi in Kindlegen vs Kindle Previwer?
I have been using Linux computers until the last year or so when I bought a Windows computer also. So for years, I have been converting .epubs to .mobis in Kindlegen in the Linux terminal.

Lately I've been converting some .epubs to .mobis with the Kindle Previewer (version 3.34.0) on the Windows computer and I've noticed some substantial file size differences.

Eg. an .epub (file size 1.0 MB) converted to a .mobi in Kindlegen (Linux terminal) ends up with a file size of 1.0 MB

The same .epub converted to .mobi in Kindle Previewer (in Windows computer) results in a file size of 2.7MB

Ultimately I upload the .mobi to Kindle Direct Publishing.

So what accounts for the huge file size difference?

Is there any advantage to the Kindle Previewer version?

And should I be reconverting all my old ebooks made using Kindlegen by using Kindle Previewer?
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