Board Thread:Support Requests - Designing Your Wiki/@comment-33708304-20190807071605/@comment-70.178.82.3-20190809001622

Fandyllic wrote: In all seriousness, you really need to take a read at the theme design as they literally describe the height x width in pixels.

“The header graphic appears on all pages of your wiki where the navigation is located. For the header graphic, the same limits apply as for the backgound (.jpg, .gif, .png, maximum of 300 kilobytes). For optimal display, we recommend a file with the size of 471px x 115px. By default, it fades out to the middle of the page - keep that in mind when selecting an image!”

This is mentioned in Theme Designer page.

Please don’t try to BS your way out of this without understanding on how this works