Thread: Size of a .MOBI File
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Old 11-28-2020, 01:25 PM   #12
Hitch
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Quote:
Originally Posted by Doitsu View Post
Not necessarily. I don't know if the poster mentioned on KDP what kind of images s/he created and the image dimensions.
For example, if s/he created oversized .bmp images, it'd easy to significantly reduce the image sizes by resizing them and saving them as .png images.

And even if s/he created .jpg or .png files, I'm pretty sure that a lossy compression with the right parameters would produce significantly smaller images with hardly any loss in quality.

I'm pretty sure that @Tex2002ans could suggest several suitable ImageMagick settings that the OP could play with, if s/he posted one of the images.
Doits:

you know I love ya, you do. But hell, brother, we do this all day long and there's only so much moosh you can get out of images.

He's never listed the dimensions or how they were made (not for lack of asking, mind you). But, if he has 25 pages that are images (let's just go with what we have, here), and the original Word file was 2.5MB, (not 25mb, presumably), that makes each full-page image (the full page is an inference, granted) 100kb. Right?

Now, that's GOTTA mean that those images are 72-96DPI. Even if he was building pages to the old Kindle size standards, using 400x600 or 600x800, the like, that would be what, 240KB to 320kb or thereabouts? I don't care how much of a genius someone is, when push comes to shove and you've exhausted your unused pixels (God Bless You, TinyPng!) and all that, the only thing that remains, really, are used pixels.

And let's not forget that presumably--he's said, somewhere, that this is a kids' book--it's also got images of text on the page. Which never reproduces "great," (readable, but not as good as "real" text, of course), and the more you go down, the rattier it will get. If he's sizing those pages to today's K sizes, those have to be...lemme think...1200x768, yes? I mean, how do you get smaller than 100KB with that? Or for modern Fires, 1024x600, yes? Again, how do you get smaller than 100kb?

I would--truly--love to hear more creative ideas and techniques. I would. If you or Tex have input, please run it for the guy. It's better than seeing another 5 posts from him in 5 more places with the same info.

(And OP: If you can provide more information, yes, folks can be more helpful. Possibly.)

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