The same five samples in PNG, JPEG, and WebP
These are actual exports and measured byte sizes. The settings do not establish equal visual quality. Compare at the intended display size as well as in the enlarged details. This experiment does not measure page loading speed.
Download measurements CSV · Read full settings
Photograph: NASA/Apollo 17 crew, The Blue Marble. Public-domain source and provenance: https://commons.wikimedia.org/wiki/File:The_Earth_seen_from_Apollo_17.jpg . Resized and placed on a black 1200x800 canvas for this exercise. No NASA endorsement is implied. Other specimens are original Nuo Pixel Solutions demonstration artwork or a screenshot of the included UI kit.