I have several websites, and Im worrying about technical stuff now since it's a fact pagespeed has importance into google's eyes.
What is better/faster for the page, in your opinion?
a) 2 images on a page. 1 is 500x500 and the 2nd is the same exact image/file but resized it to 20x20.
b) 2 images on a page. 1 is 500x500 and the 2nd is the same but 20x20 and uploaded as a different file.
Which one does is faster?