I'm having consistent issues with header image clarity in campaigns. We've reviewed all the material in the knowledge base re: image size, file size, file type, etc and the header we use in nearly all campaigns still comes out blurry in some use cases. Specifically, one version of the image registers crisp on Mac and fuzzy on PC, and another vice versa (both versions of the image comport with the CC image guidelines, both images render fine on mobile, and both were tested on Chrome on the different OSes). If there was a consistent, reliable set of specs for image upload that would be hugely helpful.
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