With the September 2021 release of ArcGIS Online, we added a new capability to Map Viewer called Effects. Effects bring Photoshop-like capabilities to your layers in your web maps. ArcGIS Online makes it very easy to try out simple visual effects that make your maps stand out and get noticed. For polygons that describe trade areas or areas with access to stores, a drop shadow often helps draw the reader’s eye to those features and is easy to try – one click to try out drop shadow, four ways to modify its default settings to suit your map’s purpose.
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