Specs for background image?

What are the specifications for the "background" image? File format? Size in pixels? Thanks,
Jeff

@pepar :
Which background image do you mean and what are you planning to do?

Good question! I uploaded an avatar. What is the "background image" … where does it appear? The space for the avatar seems 16:9 … I thought it might appear behind the avatar?

Jeff

@pepar :
The maximum size for an avatar picture is 220x112 px. Currently there is no background image determined for the avatar box.

Thanks. I will widen my avatar to show more beach. You can never have too much beach.