Thread: managing the space available for books on kobos
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Old 06-16-2016, 06:46 PM   #8
davidfor
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Posts: 24,905
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Join Date: Jul 2011
Location: Sydney, Australia
Device: Kobo:Touch,Glo, AuraH2O, GloHD,AuraONE, ClaraHD, Libra H2O; tolinoepos
Quote:
Originally Posted by anacreon View Post
Thank you for your explanations. I tried to delete books with big covers, and transferring them again after severely reducing the weight of the cover, with no success whatever. I suppose I'd have to do a hard reset, but can't be bothered. The SD card wouldn't be a solution since I keep the H2o and the Glo HD synchronized and the first has no slot, and I wouldn't be comfortable opening any device to change the SD card and doing all that needs doing (I read the thread about the process a while ago).
If your issue is that you want to make more space by resizing the stored cover images, it won't really work. Reducing the size of the covers in the epubs will work to reduce the space taken. But, the cover images are generated by rendering the first page in the book. A simple cover, say text only title and authors name, will probably produce a smaller image, but anything that is an actual image will probably be roughly the same size no matter what.

If you are sending the cover images from calibre, then they are rendered to be the same size that the firmware produces but are done from the cover image in the library. But, for the largest cover image used for the sleep and power off screen, the image won't be upscaled if it is smalller than what the device needs, or at least it isn't if the "Keep aspect ratio" option in the driver is used. That might save space. The smaller versions are always the same created to the size the firmware does.

The only other thing you can do is occasionally delete all the store cover images. The device will regenerate them as needed, but this will at least claim some space for a while. And it will get rid of the largest version until you open the book.
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