Quote:
Originally Posted by einkpaladin
Although I have to ask: is the "losslessly compress images" part referring to the cover images or to images displayed within a book?
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It will compress all images, including the cover.
If you want to do a lossy compression on all or select images, you can use the Editor in Calibre and select "Tools > Compress Images Losslessly", and then the subsequent dialog box has the option to "Enable lossy compression of JPEG images" and allows you to select a target percentage under "Image quality".