Quote:
Originally Posted by BetterRed
@richo - maybe you could use the Unpack tool on the ePub. You will probably need to add Unpack to a toolbar or menu. Explode the book (the tool will put the components into a temporary location), use an image editor to upscale, sharpen ... the images, and then Rebuild the book.
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Thank you for the suggestion. I have never heard about the Unpack. Is it plug-in for calibre? I used calibre ebook editor to enlarge them 2x manually two images and sharpen them. This gave me nice images (these are actually hand drawing and therefore they do scale pretty OK).
Then I also need to modify CSS produced by calibre for each image containing width, height. There are few hundred images in this book. That is a reason I was looking for some way I can automatize this process.