An Esri blog entitled Put Your Best Thumbnail Forward has instructions for how to edit an ArcGIS Online map to change its thumbnail image.
Using those I perform the following steps to try and change the thumbnail for an ArcGIS Online Web Mapping Application without success.
- Sign into my ArcGIS Online Public Account
- Click on My Content tab
- Click on the Web Mapping Application to open its item details
- Click on Edit Thumbnail
- Browse to the image I want which is a
*.jpeg200 pixels wide by 143 pixels high which seems to be OK according to the instructions below (I also tried renaming it as
For best results, the image should be 200 pixels wide by 133 pixels high. Other sizes will be adjusted to fit. Acceptable image formats are: PNG, GIF and JPEG.
- Click OK
- Thumbnail does not update so I hard refresh the browser and it still does not update.
Is it possible to change the Thumbnail used for a Web Mapping Application that is being shared using a Public Account of ArcGIS Online?