How Do I Know If My Sig is to Big When using Google Chrome?

Well I just started using Google Chrome and I am confused to find out if the picture for my sig is to big. I do not want to make it my sig until I find out if it is to big. How can I find out the size on the picture. If needed I will post the sig picture if you can determine it. Thank you.

 

so you want to know how big your image is?.....

 

yes...

 

There's a little section on measuring your sig here

http://www.sythe.org/showthread.php?t=436489

Scroll down to about Post 3 or something.