GIF vs APNG vs WebP

Test 1

Test 2

Test 3

Test 4

Test 5

Contact.gif
Contact.png
GIF = 509 610 bytes
APNG = 425 977 bytes
Contact.webp
Contact_lossy.webp
WebP = 671 768 bytes
Lossy WebP = 496 998 bytes
Original GIF is from http://iwdrm.tumblr.com/

Used gif2apng and gif2webp tools to convert it into APNG and WebP.