Thread:JoePlay/@comment-29644557-20190103001709/@comment-171752-20190103160931

You can view the background image on any wiki at File:Wiki-background. As you can see, the dimensions for Heroes Wiki background are 2,000 × 1,150, and the filesize is 298 KB.

I can gradually adjust the quality of an image using Photoshop, so if you link me to the image you want to use (with the filesize that's too big), I'll adjust it so that the filesize is just under the limit of 300 KB.