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Old 02-01-2016, 12:47 PM   #1
iridius
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Why are comic book files so HUGE.

I am trying to make a collection of comics, but I am finding that most of them are huge. I mean a comic with 300 pages is the same size a full length movie or bigger in some cases. I assume it is mostly due to the comics' images' high resolution, but why are they so big? Is there really that much of a difference on most screens? I ask, because I want to archive files after I've read them in a more compact way. Any suggestions? I have cbr/cbz and pdf comics at this time. Thanks.
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Old 02-04-2016, 04:21 PM   #2
iridius
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Any idea if there is a better place for me to ask this question? Or maybe it's a dumb question and that's what's wrong, if that's the case please let me know so I can stop looking so dumb
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Old 02-04-2016, 05:42 PM   #3
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A comic with 300 pages are 300 images in comic pages dimensions. Depending on the resolution, the size can differ vastly, but even if each image has only 1mb, we speak about 300mb here.

If you want to reduce the size, you have to extract the images and change the resolution and/or the compression rate. You have to experiment, what is acceptable for you. The biggest problem will be the readability of the text.

One free app to do batch conversions of images is IrfanView. If you can write batch scrpits, you could maybe write a little one, that extracts a cbz, resizes the images and rezipps them. But you will lose some quality.
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Old 02-09-2016, 02:16 AM   #4
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Your answers are:
jpegoptim http://encode.ru/threads/1587-jpegop...ll=1#post33541 for jpegs.

Pngout + advpng with zopfli algorithm for png.

And advzip for the cbz.
that's for lossless recompression and cleaning.

That's the 1st I'd try. If it's not enough then one can always start small steps on the lossy road.
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