Need help with signature

[SovietSandwhich]

So I created a sweet stat tracker signature, and wanted to use it on a forum I'm a part of (Tactical Gamer) but the problem lies in that the image is apparently too large.

The image size is restricted to be 468 x 100 pixels or 48.8kb (whichever is smaller)

Is there anything that can be done to shrink the signature or in some way get around this? Or do I have to have a custom signature be made?

[SovietSandwhich]

Managed to figure out what the problem is and its that the image file size is 88.5kb. Is there any way to reduce the file size?