MobileRead Forums - View Single Post - How to turn all images in Kobo Forma to grayscale (to save space & speed xp)

droopy · 10-14-2019, 03:11 AM

I have a Kobo Forma. Almost all my ebooks come with an image for the cover, and when they don't, I get Calibre to find and download a cover.

Some of my ebooks come with images. For example, maps and photographs. Almost always, these images are full colors, unless the photos are from, um, the 1970s or earlier when film was still black and white or grayscale.

Because my Forma only does grayscale, I would like all images that are in my Kobo Forma to be grayscale. This is to save on limited space (and perhaps a secondary benefit is faster page turns / image-loading).

How can I make this happen?

10-14-2019, 03:11 AM	#1
droopy Guru Posts: 834 Karma: 2912460 Join Date: Apr 2009 Device: Kobo Forma	Turn all images in Kobo Forma to grayscale (for space & speed) I have a Kobo Forma. Almost all my ebooks come with an image for the cover, and when they don't, I get Calibre to find and download a cover. Some of my ebooks come with images. For example, maps and photographs. Almost always, these images are full colors, unless the photos are from, um, the 1970s or earlier when film was still black and white or grayscale. Because my Forma only does grayscale, I would like all images that are in my Kobo Forma to be grayscale. This is to save on limited space (and perhaps a secondary benefit is faster page turns / image-loading). How can I make this happen? Last edited by droopy; 10-14-2019 at 08:16 PM.