Thread: Convert from epbup to mobi or awz3 - huge size and other questions
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Old 04-30-2015, 08:22 AM   #3
pdurrant
The Grand Mouse 高貴的老鼠
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Quote:
Originally Posted by borisov87 View Post
results:
original epub - 3.8Mb
mobi - 4.1Mb
aw3 - 4.6Mb

Is this normal?
Yes. ePub uses zip (deflate, I think), while mobi and azw3 use a less efficient compression algorithm.
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