Quote:
Originally Posted by lumpynose
So the only image is the cover. But what pixel count should I know about to avoid? I'm totally clueless about what's a good size to make the cover images.
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You should be able to safely stick with 1200px width, so depending on the ratio of your cover:
1.4 = 1200 x 1680
1.5 = 1200 x 1800
1.6 = 1200 x 1920
Those are high enough resolution for newer devices, and low enough that older devices can scale them down fine.
Older devices, like my Nook (1st gen), would chug while displaying those large images, but they would eventually appear. When the resolution became so large it couldn't fit in RAM, the Nook would refuse to display them.
Newer devices should be more powerful, and 1600px is a "recommended minimum", so:
1.4 = 1600 x 2240
1.5 = 1600 x 2400
1.6 = 1600 x 2560
Side Note: I haven't tested it in years, but I believe the limit on my Nook was ~3.5 million pixels. Beyond that point, the images wouldn't even display.
Quote:
Originally Posted by exaltedwombat
But when some readers completely refuse to display images over a certain pixel count, it's harder to wash our hands of the issue.
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Hmmm, I still would be interested seeing the original poster's images. Or a sample EPUB with this issue.
It could also be they're accidentally using CMYK or something strange instead of RGB.
I haven't messed with Aldiko in many years, but last time I tested it on my old phone, even larger images displayed fine.