Photo Size Exploration

Original image

This image is 2147 x 2286px, 1.3MB

It's displayed at 600 x 639px

Reduced size

This image is 1200 x 1278px, 521kb

It's displayed at 600 x 639px

Is it responsive?

This image is 1200 x 1278px, 521kb

It's displayed at 600 x 639px, with class = img-responsive