Hello David,
sorry, little follow-up question.
Something similar seems to happen with the blog preview images:
blog preview images
HTML width is 768px; CSS is used to resize to 320px; 320@2x image exists but 718@2x is actually served (not only in Chrome but also in Safari).
This probably does not have that huge of a performance impact, but I was wondering why this happens.
Best,
Davide
— EDIT
Never mind, I found the option to resize blog images in the blog section 🙂