I'm trying to optimize some of my images for the web and I'm running into a problem. I use Livebooks for my site and they "require" that my images be 920px on the long end for horizontals and that the files are no more than 110k as JPEGs.
I have a number of images that have been highly digitally modified and include large portions of sky in the composition. Whenever I size my images according to Livebooks standards and adjust my JPEG slider down to match the 110k requirement (usually around 3 on the quality slider), I begin to get some nasty gradiation lines in the skies. Is there any way to have the quality I'm looking for in that small a file, or am I just doomed to either have bad image quality or slow load times?
(I should add that with most of my images, I do not have this issue...as I said above, it's mostly on my images that have been worked on extensively)