Not sure how to adjust the size of the logo, if it's even possible. No, I can't host it myself or I would. I had to merge three agency logo's into one graphic. I would like the entire thing to be a little larger for readability. Also interested in customized banners if that's possible using assistant. Thanks!
"header": {
"linkText": "",
"linkURL": "",
"logoURL": "https://www.arcgis.com/sharing/rest/content/items/e8ac7302f8cd4d778461d422492a9d7f/resources/sm_series_logo__1592233456490.jpg",
"logoTarget": "",
"social": {
"facebook": false,
"twitter": false,
"bitly": false
},
"compactSize": true