What... that's weird - when I try it, the result is that the browser scales WITH antialiasing (if the browser supports it, which all HTML 5 capable browsers does)...
Fx. look at the big gold coin in my wip pet project here:
The game size is 1136x640 - when I run it in 1920x1080 and upwards on large 27" monitors, the coin still looks sharp and sleek. All the sprites are x4 size and then sized down after importing.
The sprite fonts, however, misbehaves a little - but I assume your logo is not made with a sprite font.
And yeah, this is an early development snippet of a clone of the well-known game Cookie Clicker. ^_^