Quote:
Originally Posted by droopy
@NiLuJe, Sorry, I'm not sure i understand. On my laptop (i.e. the "library"), I'd like to keep the original epub/cbr/mobi files, with all the color and everything else untouched. But on my Kobo, I want all images, whether the book's cover or the book's contents, be all grayscale. What must I do to make that happen? The purpose is to save space on my Kobo Forma. (A secondary benefit is probably faster page turns and book loading times.)
|
For the comics, calibre doesn't have a comic output plugin, so there isn't a way to convert books of any sort to either CBR or CBZ. Writing one shouldn't be to hard for someone who had the interest. If this is done, if you convert to the same format, calibre will save the original for later use.
You can cheat sort of and use epub as the output and then change the extension to cbz. That conversion will do the work you need on the images. And an epub is a zip file, so unless the CBZ reader checks for other files, it should be fine.
KCC, as mentioned by @NiLuJe, will also do the job. It has options to produce ebubs or CBZ and to resize to a lot of different devices or a custom size. You could use the Open With function in calibre to start it.
I can't comment on the quality or size of the images produced by any of these. I don't really read comics, so I haven't done much experimenting.