These are the links to use the FVG orthophotos in iD, if you want there are also the LIDAR hillshades:

link web:
https://docs.google.com/document/d/e/2PACX-1vSPE_oERuH5eBrRYL603Ix8x5hxeYS_Lu2OWSpgIpa01UBsnOFuC2ehVJsl8vajlFEce5v2inKlqHP5/pub

link ortophoto:
http://irdat-ortofoto.regione.fvg.it/geoserver/ows?FORMAT=image/png&TRANSPARENT=TRUE&VERSION=1.3.0&SERVICE=WMS&REQUEST=GetMap&LAYERS=ortofoto:trueorto_FVG_1720&STYLES=&CRS={proj}&WIDTH={width}&HEIGHT={height}&BBOX={bbox}