my blog is loading very choppy due to larger image sizes (needed) for light gallery.
I would like to implement a split between light gallery href and src image version. No problem with that I guess, I can handle that.
My question, yet, ist how to get a new automatic standard image size for uploaded media. Right now the theme produces 150×150, 300×200, 300×300 and 768x[height]
I need additionally 700x[height] and 1400x[height] (for retina).
Where can I do that? I tried hard to find the right place in the php docs but couldn’t find it.
Can you give me some help?
Would be awesome!