Currently, chat loads
s=32 gravatars for chat messages, which look blurry and bad. For directly uploaded avatars (the stack.imgur-hosted ones), chat uses
s=128, which the browser then downscales to the correct size, making them sharp and good. Compare the following two:
Left is what's current visible in chat, on the right I manually changed the
s=128 in the gravatar URL.
Can this please be the default? Because apparently my browser is better at downsampling than gravatar. This also applies to the avatar shown in the lower-left corner (which apparently uses a
s=64 sized gravatar).
(Side note: I'm not using the direct-to-SE (stack.imgur-hosted) upload method because of a problem with transparency when the image is resized.)