I’m only using the free Beaver plugin at the moment.
When you add an image to a photo box you are presented with the options … thumbnail, medium, large or full-size.
I understand all about pixel dimensions etc, but how doe this relate to my page and which option should I select and when?
Does this choice dictate which size is served up into my Wordpress database?
When I re-size my browser window, the picture box can re-size accordingly …so, does whichever size I choose get resampled to fit this pixel space?
How are mobile devices and Retina screens dealt with?
Presumably, I need to load the largest size that is likely to be called upon?
But how do I calculate this?
And also the knock on effects of download speed?
Advice greatly appreciated.