Retina - Photoshop save for web: Low quality

680 x 680
18,172 Bytes

680 x 680
22,761 Bytes

680 x 680
26,274 Bytes

680 x 680
25,808 Bytes

Non Retina - Photoshop save for web: High quality (default)

340 x 340
19,065 Bytes

340 x 340
24,392 Bytes

340 x 340
32,729 Bytes

340 x 340
29,239 Bytes