I don’t usually browse with CSS disabled, so I’ve only just now noticed.
The Discourse logo is
1,306px x 349px (scaled to 150px x 40px)
i.e.
actual image
displayed image
Any reason for using such a large image to begin with?
No aliasing on retina displays would be my guess.
إعجابَين (2)
Seems like 300x80 would suffice for that. Or SVG.
إعجاب واحد (1)
Probably could be a bit smaller, but you do want at least triple size for high resolution devices.