I'm seeking assistance on Zoho Invoice for the Header Background image quality.  I can not find any filetype, size or image setting that will give my uploaded background image a quality appearance.  Please see attached sample invoice here. When exported to pdf and printed, the worst looking part of my invoice is my company logo.  Not something I can send to clients and feel good about. 

Can someone from Zoho tell me what the optimum settings are, in real terms. I've read a lot of posts here where you have given vague non-answers.

Thanks, sorry, but I"m very disappointed and frustrated at this point.

Stephen