diff --git a/data/imagery.json b/data/imagery.json
index 04e0992a0..c8059980a 100644
--- a/data/imagery.json
+++ b/data/imagery.json
@@ -445,7 +445,7 @@
       "name": "AIV Digitaal Hoogtemodel Vlaanderen II, multidirectionale hillshade 0,25 m",
       "type": "wms",
       "template": "https://geoservices.informatievlaanderen.be/raadpleegdiensten/dhmv/wms?FORMAT=image/jpeg&VERSION=1.1.1&SERVICE=WMS&REQUEST=GetMap&LAYERS=DHMV_II_HILL_25cm&STYLES=&SRS={proj}&WIDTH={width}&HEIGHT={height}&BBOX={bbox}",
-      "projection": "EPSG:3857",
+      "projection": "EPSG:4326",
       "endDate": "2015-01-01T00:00:00.000Z",
       "startDate": "2013-01-01T00:00:00.000Z",
       "polygon": [
@@ -561,7 +561,7 @@
       "name": "AIV Digitaal Hoogtemodel Vlaanderen II, Skyview factor 0,25 m",
       "type": "wms",
       "template": "https://geoservices.informatievlaanderen.be/raadpleegdiensten/dhmv/wms?FORMAT=image/jpeg&VERSION=1.1.1&SERVICE=WMS&REQUEST=GetMap&LAYERS=DHMV_II_SVF_25cm&STYLES=&SRS={proj}&WIDTH={width}&HEIGHT={height}&BBOX={bbox}",
-      "projection": "EPSG:3857",
+      "projection": "EPSG:4326",
       "endDate": "2015-01-01T00:00:00.000Z",
       "startDate": "2013-01-01T00:00:00.000Z",
       "polygon": [
@@ -677,7 +677,7 @@
       "name": "AIV Flanders 2013-2015 aerial imagery 10cm",
       "type": "wms",
       "template": "https://geoservices.informatievlaanderen.be/raadpleegdiensten/OGW/wms?FORMAT=image/jpeg&VERSION=1.1.1&SERVICE=WMS&REQUEST=GetMap&LAYERS=OGWRGB13_15VL&STYLES=&SRS={proj}&WIDTH={width}&HEIGHT={height}&BBOX={bbox}",
-      "projection": "EPSG:3857",
+      "projection": "EPSG:4326",
       "endDate": "2015-01-01T00:00:00.000Z",
       "startDate": "2013-01-01T00:00:00.000Z",
       "polygon": [
@@ -8636,7 +8636,7 @@
       "name": "Canton de Génève 5cm (SITG 2011)",
       "type": "wms",
       "template": "https://ge.ch/ags2/services/Orthophotos_2011/MapServer/WMSServer?FORMAT=image/jpeg&VERSION=1.1.1&SERVICE=WMS&REQUEST=GetMap&Layers=0&STYLES=&SRS={proj}&WIDTH={width}&HEIGHT={height}&BBOX={bbox}",
-      "projection": "EPSG:3857",
+      "projection": "EPSG:4326",
       "endDate": "2011-01-01T00:00:00.000Z",
       "startDate": "2011-01-01T00:00:00.000Z",
       "polygon": [
@@ -9285,7 +9285,7 @@
       "name": "Canvec - English",
       "type": "wms",
       "template": "https://maps.geogratis.gc.ca/wms/canvec_en?FORMAT=image/png&TRANSPARENT=TRUE&VERSION=1.1.1&SERVICE=WMS&REQUEST=GetMap&LAYERS=canvec&STYLES=&SRS={proj}&WIDTH={width}&HEIGHT={height}&BBOX={bbox}",
-      "projection": "EPSG:3857",
+      "projection": "EPSG:4326",
       "polygon": [
         [
           [-141.0678, 60.2442],
@@ -9544,7 +9544,7 @@
       "name": "Canvec - French",
       "type": "wms",
       "template": "https://maps.geogratis.gc.ca/wms/canvec_fr?FORMAT=image/png&TRANSPARENT=TRUE&VERSION=1.1.1&SERVICE=WMS&REQUEST=GetMap&LAYERS=canvec&STYLES=&SRS={proj}&WIDTH={width}&HEIGHT={height}&BBOX={bbox}",
-      "projection": "EPSG:3857",
+      "projection": "EPSG:4326",
       "polygon": [
         [
           [-141.0678, 60.2442],
@@ -9876,7 +9876,7 @@
       "name": "Carta de Uso do Solo 2010 (WMS)",
       "type": "wms",
       "template": "http://mapas.dgterritorio.pt/wms-inspire/cos2010v1?language=por&FORMAT=image/png&TRANSPARENT=TRUE&VERSION=1.1.1&SERVICE=WMS&REQUEST=GetMap&LAYERS=COS2010_v1.0&STYLES=&SRS={proj}&WIDTH={width}&HEIGHT={height}&BBOX={bbox}",
-      "projection": "EPSG:3857",
+      "projection": "EPSG:4326",
       "endDate": "2010-01-01T00:00:00.000Z",
       "startDate": "2010-01-01T00:00:00.000Z",
       "zoomExtent": [14, 18],
@@ -11054,7 +11054,7 @@
       "name": "Catastro Spain",
       "type": "wms",
       "template": "http://ovc.catastro.meh.es/Cartografia/WMS/ServidorWMS.aspx?FORMAT=image/jpeg&VERSION=1.1.1&SERVICE=WMS&REQUEST=GetMap&Layers=Catastro&STYLES=&SRS={proj}&WIDTH={width}&HEIGHT={height}&BBOX={bbox}",
-      "projection": "EPSG:3857",
+      "projection": "EPSG:4326",
       "polygon": [
         [
           [-17.88463, 28.44606],
@@ -12441,7 +12441,7 @@
       "name": "City of Zürich Orthophoto 2011",
       "type": "wms",
       "template": "https://www.gis.stadt-zuerich.ch/maps/services/wms/WMS-ZH-STZH-OGD/MapServer/WmsServer?FORMAT=image/jpeg&VERSION=1.1.1&SERVICE=WMS&REQUEST=GetMap&LAYERS=Luftbild_2011&STYLES=&SRS={proj}&WIDTH={width}&HEIGHT={height}&BBOX={bbox}",
-      "projection": "EPSG:3857",
+      "projection": "EPSG:4326",
       "endDate": "2011-01-01T00:00:00.000Z",
       "startDate": "2011-01-01T00:00:00.000Z",
       "zoomExtent": [0, 21],
@@ -12461,7 +12461,7 @@
       "name": "City of Zürich Overview map (Steets, buildings, house numbers)",
       "type": "wms",
       "template": "https://www.gis.stadt-zuerich.ch/maps/services/wms/WMS-ZH-STZH-OGD/MapServer/WmsServer?FORMAT=image/jpeg&VERSION=1.1.1&SERVICE=WMS&REQUEST=GetMap&LAYERS=Uebersichtsplan&STYLES=&SRS={proj}&WIDTH={width}&HEIGHT={height}&BBOX={bbox}",
-      "projection": "EPSG:3857",
+      "projection": "EPSG:4326",
       "zoomExtent": [0, 21],
       "polygon": [
         [
@@ -12493,7 +12493,7 @@
       "name": "Czech CUZK:KM",
       "type": "wms",
       "template": "https://wms.cuzk.cz/wms.asp?service=WMS&VERSION=1.1.1&REQUEST=GetMap&SRS={proj}&LAYERS=parcelni_cisla_i,obrazy_parcel_i,RST_KMD_I,hranice_parcel_i,DEF_BUDOVY,RST_KN_I,dalsi_p_mapy_i,prehledka_kat_prac,prehledka_kat_uz,prehledka_kraju-linie&FORMAT=image/png&transparent=TRUE&WIDTH={width}&HEIGHT={height}&BBOX={bbox}",
-      "projection": "EPSG:3857",
+      "projection": "EPSG:4326",
       "polygon": [
         [
           [15.00637, 49.01774],
@@ -26033,7 +26033,7 @@
       "name": "Erlangen Luftbild (2011 5,0 cm)",
       "type": "wms",
       "template": "https://secure.erlangen.de/arcgiser/services/Luftbilder2011/MapServer/WmsServer?FORMAT=image/jpeg&VERSION=1.1.1&SERVICE=WMS&REQUEST=GetMap&LAYERS=Erlangen_ratio10_5cm_gk4.jp2&STYLES=&SRS={proj}&WIDTH={width}&HEIGHT={height}&BBOX={bbox}",
-      "projection": "EPSG:3857",
+      "projection": "EPSG:4326",
       "endDate": "2011-01-01T00:00:00.000Z",
       "startDate": "2011-01-01T00:00:00.000Z",
       "polygon": [
@@ -26070,7 +26070,7 @@
       "name": "Erlangen Luftbild (2013 6,25 cm)",
       "type": "wms",
       "template": "https://secure.erlangen.de/arcgiser/services/Luftbilder2013/MapServer/WmsServer?FORMAT=image/jpeg&VERSION=1.1.1&SERVICE=WMS&REQUEST=GetMap&LAYERS=Erlangen_ratio5_6.25cm.jp2&STYLES=&SRS={proj}&WIDTH={width}&HEIGHT={height}&BBOX={bbox}",
-      "projection": "EPSG:3857",
+      "projection": "EPSG:4326",
       "endDate": "2013-01-01T00:00:00.000Z",
       "startDate": "2013-01-01T00:00:00.000Z",
       "polygon": [
@@ -31379,7 +31379,7 @@
       "name": "Geobase Hydrography - English",
       "type": "wms",
       "template": "https://maps.geogratis.gc.ca/wms/hydro_network_en?FORMAT=image/png&TRANSPARENT=TRUE&VERSION=1.1.1&SERVICE=WMS&REQUEST=GetMap&LAYERS=nhn:nhn&STYLES=&SRS={proj}&WIDTH={width}&HEIGHT={height}&BBOX={bbox}",
-      "projection": "EPSG:3857",
+      "projection": "EPSG:4326",
       "polygon": [
         [
           [-141.0678, 60.2442],
@@ -31639,7 +31639,7 @@
       "name": "Geobase Hydrography - French",
       "type": "wms",
       "template": "https://maps.geogratis.gc.ca/wms/hydro_network_fr?FORMAT=image/png&TRANSPARENT=TRUE&VERSION=1.1.1&SERVICE=WMS&REQUEST=GetMap&LAYERS=nhn:nhn&STYLES=&SRS={proj}&WIDTH={width}&HEIGHT={height}&BBOX={bbox}",
-      "projection": "EPSG:3857",
+      "projection": "EPSG:4326",
       "polygon": [
         [
           [-141.0678, 60.2442],
@@ -31899,7 +31899,7 @@
       "name": "Geobase Roads - English",
       "type": "wms",
       "template": "https://maps.geogratis.gc.ca/wms/roads_en?FORMAT=image/png&TRANSPARENT=TRUE&VERSION=1.1.1&SERVICE=WMS&REQUEST=GetMap&LAYERS=roads&STYLES=&SRS={proj}&WIDTH={width}&HEIGHT={height}&BBOX={bbox}",
-      "projection": "EPSG:3857",
+      "projection": "EPSG:4326",
       "zoomExtent": [4, 20],
       "polygon": [
         [
@@ -32159,7 +32159,7 @@
       "name": "Geobase Roads - French",
       "type": "wms",
       "template": "https://cartes.geogratis.gc.ca/wms/roads_fr?FORMAT=image/png&TRANSPARENT=TRUE&VERSION=1.1.1&SERVICE=WMS&REQUEST=GetMap&LAYERS=routes&STYLES=&SRS={proj}&WIDTH={width}&HEIGHT={height}&BBOX={bbox}",
-      "projection": "EPSG:3857",
+      "projection": "EPSG:4326",
       "zoomExtent": [4, 20],
       "polygon": [
         [
@@ -32624,7 +32624,7 @@
       "name": "Géolittoral - Sentiers",
       "type": "wms",
       "template": "http://geolittoral.din.developpement-durable.gouv.fr/wxs?FORMAT=image/png&TRANSPARENT=TRUE&VERSION=1.1.1&SERVICE=WMS&REQUEST=GetMap&LAYERS=n_sentier_littoral_l&STYLES=&SRS={proj}&WIDTH={width}&HEIGHT={height}&BBOX={bbox}",
-      "projection": "EPSG:3857",
+      "projection": "EPSG:4326",
       "polygon": [
         [
           [-0.98385, 46.18807],
@@ -33115,7 +33115,7 @@
       "name": "Géolittoral V2 - Orthophotos 2011-2014",
       "type": "wms",
       "template": "http://geolittoral.din.developpement-durable.gouv.fr/wxs?FORMAT=image/jpeg&VERSION=1.1.1&SERVICE=WMS&REQUEST=GetMap&LAYERS=ortholittorale_v2_rvb&STYLES=&SRS={proj}&WIDTH={width}&HEIGHT={height}&BBOX={bbox}",
-      "projection": "EPSG:3857",
+      "projection": "EPSG:4326",
       "endDate": "2014-01-01T00:00:00.000Z",
       "startDate": "2011-01-01T00:00:00.000Z",
       "polygon": [
@@ -48891,7 +48891,7 @@
       "name": "Kanton Bern, Digitales Oberflaechenmodell 50cm, Relief",
       "type": "wms",
       "template": "https://www.geoservice.apps.be.ch/geoservice2/services/a42geo/a42geo_hoehenwms_d_fk/MapServer/WmsServer?LAYERS=GEODB.LDOM50CM_LORELIEF&SERVICE=WMS&VERSION=1.3.0&REQUEST=GetMap&STYLES=default&FORMAT=image/jpeg&CRS={proj}&WIDTH={width}&HEIGHT={height}&BBOX={bbox}",
-      "projection": "EPSG:3857",
+      "projection": "EPSG:4326",
       "endDate": "2015-01-01T00:00:00.000Z",
       "startDate": "2015-01-01T00:00:00.000Z",
       "zoomExtent": [8, 22],
@@ -48924,7 +48924,7 @@
       "name": "Kanton Bern, Digitales Terrainmodell 50cm, Relief",
       "type": "wms",
       "template": "https://www.geoservice.apps.be.ch/geoservice2/services/a42geo/a42geo_hoehenwms_d_fk/MapServer/WmsServer?LAYERS=GEODB.LDTM50CM_LTRELIEF&SERVICE=WMS&VERSION=1.3.0&REQUEST=GetMap&STYLES=default&FORMAT=image/jpeg&CRS={proj}&WIDTH={width}&HEIGHT={height}&BBOX={bbox}",
-      "projection": "EPSG:3857",
+      "projection": "EPSG:4326",
       "endDate": "2015-01-01T00:00:00.000Z",
       "startDate": "2015-01-01T00:00:00.000Z",
       "zoomExtent": [8, 22],
@@ -48957,7 +48957,7 @@
       "name": "Kanton Glarus Orthophoto 2013",
       "type": "wms",
       "template": "https://wms.geo.gl.ch?LAYERS=ch.gl.imagery.orthofoto2013&STYLES=default&FORMAT=image/jpeg&CRS={proj}&WIDTH={width}&HEIGHT={height}&BBOX={bbox}&VERSION=1.3.0&SERVICE=WMS&REQUEST=GetMap",
-      "projection": "EPSG:3857",
+      "projection": "EPSG:4326",
       "endDate": "2013-01-01T00:00:00.000Z",
       "startDate": "2013-01-01T00:00:00.000Z",
       "zoomExtent": [8, 22],
@@ -48988,7 +48988,7 @@
       "name": "Kanton Glarus Orthophoto 2015",
       "type": "wms",
       "template": "https://wms.geo.gl.ch?LAYERS=ch.gl.imagery.orthofoto2015&STYLES=default&FORMAT=image/jpeg&CRS={proj}&WIDTH={width}&HEIGHT={height}&BBOX={bbox}&VERSION=1.3.0&SERVICE=WMS&REQUEST=GetMap",
-      "projection": "EPSG:3857",
+      "projection": "EPSG:4326",
       "endDate": "2015-01-01T00:00:00.000Z",
       "startDate": "2015-01-01T00:00:00.000Z",
       "zoomExtent": [8, 22],
@@ -49019,7 +49019,7 @@
       "name": "Kanton Glarus Orthophoto 2017",
       "type": "wms",
       "template": "https://wms.geo.gl.ch?LAYERS=ch.gl.imagery.orthofoto2017&STYLES=default&FORMAT=image/jpeg&CRS={proj}&SRS={proj}&WIDTH={width}&HEIGHT={height}&BBOX={bbox}&VERSION=1.3.0&SERVICE=WMS&REQUEST=GetMap",
-      "projection": "EPSG:3857",
+      "projection": "EPSG:4326",
       "endDate": "2017-01-01T00:00:00.000Z",
       "startDate": "2017-01-01T00:00:00.000Z",
       "zoomExtent": [8, 22],
@@ -49509,7 +49509,7 @@
       "name": "Kanton Solothurn, DOM Relief 2014 50cm",
       "type": "wms",
       "template": "https://geo.so.ch/api/wms?LAYERS=ch.so.agi.lidar_2014.dom_relief&FORMAT=image/jpeg&CRS={proj}&WIDTH={width}&HEIGHT={height}&BBOX={bbox}&VERSION=1.3.0&SERVICE=WMS&REQUEST=GetMap",
-      "projection": "EPSG:3857",
+      "projection": "EPSG:4326",
       "endDate": "2014-01-01T00:00:00.000Z",
       "startDate": "2014-01-01T00:00:00.000Z",
       "zoomExtent": [8, 22],
@@ -49686,7 +49686,7 @@
       "name": "Kanton Solothurn, DTM Relief 2014 50cm",
       "type": "wms",
       "template": "https://geo.so.ch/api/wms?LAYERS=ch.so.agi.lidar_2014.dtm_relief&FORMAT=image/jpeg&CRS={proj}&WIDTH={width}&HEIGHT={height}&BBOX={bbox}&VERSION=1.3.0&SERVICE=WMS&REQUEST=GetMap",
-      "projection": "EPSG:3857",
+      "projection": "EPSG:4326",
       "endDate": "2014-01-01T00:00:00.000Z",
       "startDate": "2014-01-01T00:00:00.000Z",
       "zoomExtent": [8, 22],
@@ -49863,7 +49863,7 @@
       "name": "Kanton Thurgau Relief DTM",
       "type": "wms",
       "template": "https://ows-raster.geo.tg.ch/geofy_access_proxy/reliefschattierung?LAYERS=DTMRelief&FORMAT=image/jpeg&CRS={proj}&WIDTH={width}&HEIGHT={height}&BBOX={bbox}&VERSION=1.3.0&SERVICE=WMS&REQUEST=GetMap",
-      "projection": "EPSG:3857",
+      "projection": "EPSG:4326",
       "endDate": "2014-01-01T00:00:00.000Z",
       "startDate": "2014-01-01T00:00:00.000Z",
       "zoomExtent": [8, 21],
@@ -49947,7 +49947,7 @@
       "name": "Kanton Thurgau, Basisplan-AV",
       "type": "wms",
       "template": "https://ows.geo.tg.ch/geofy_access_proxy/basisplanf?LAYERS=Basisplan_farbig&FORMAT=image/jpeg&CRS={proj}&WIDTH={width}&HEIGHT={height}&BBOX={bbox}&VERSION=1.3.0&SERVICE=WMS&REQUEST=GetMap",
-      "projection": "EPSG:3857",
+      "projection": "EPSG:4326",
       "zoomExtent": [8, 21],
       "polygon": [
         [
@@ -50029,7 +50029,7 @@
       "name": "Kanton Thurgau, Orthofoto2017 RGB",
       "type": "wms",
       "template": "https://ows-raster.geo.tg.ch/geofy_access_proxy/orthofoto2017?LAYERS=Orthofoto2017_RGB&FORMAT=image/jpeg&CRS={proj}&WIDTH={width}&HEIGHT={height}&BBOX={bbox}&VERSION=1.3.0&SERVICE=WMS&REQUEST=GetMap",
-      "projection": "EPSG:3857",
+      "projection": "EPSG:4326",
       "endDate": "2017-01-01T00:00:00.000Z",
       "startDate": "2017-01-01T00:00:00.000Z",
       "zoomExtent": [8, 21],
@@ -50114,7 +50114,7 @@
       "name": "Kanton Thurgau, Rad-Routen",
       "type": "wms",
       "template": "https://ows.geo.tg.ch/geofy_access_proxy/radwege?LAYERS=Radwege&FORMAT=image/jpeg&CRS={proj}&WIDTH={width}&HEIGHT={height}&BBOX={bbox}&VERSION=1.3.0&SERVICE=WMS&REQUEST=GetMap",
-      "projection": "EPSG:3857",
+      "projection": "EPSG:4326",
       "zoomExtent": [8, 21],
       "polygon": [
         [
@@ -50196,7 +50196,7 @@
       "name": "Kanton Thurgau, Wanderwege",
       "type": "wms",
       "template": "https://ows.geo.tg.ch/geofy_access_proxy/wanderwege?LAYERS=Wanderwege&FORMAT=image/jpeg&CRS={proj}&WIDTH={width}&HEIGHT={height}&BBOX={bbox}&VERSION=1.3.0&SERVICE=WMS&REQUEST=GetMap",
-      "projection": "EPSG:3857",
+      "projection": "EPSG:4326",
       "zoomExtent": [8, 21],
       "polygon": [
         [
@@ -50387,7 +50387,7 @@
       "name": "Kanton Zurich, Oberflächenschummerung 50cm",
       "type": "wms",
       "template": "https://wms.zh.ch/OGDLidarZH?FORMAT=image/jpeg&VERSION=1.3.0&SERVICE=WMS&REQUEST=GetMap&LAYERS=dom2014hillshade&CRS={proj}&WIDTH={width}&HEIGHT={height}&BBOX={bbox}",
-      "projection": "EPSG:3857",
+      "projection": "EPSG:4326",
       "endDate": "2014-01-01T00:00:00.000Z",
       "startDate": "2014-01-01T00:00:00.000Z",
       "zoomExtent": [8, 22],
@@ -50897,7 +50897,7 @@
       "name": "Kanton Zurich, Orthofoto ZH Frühjahr 2015/16 RGB 10cm",
       "type": "wms",
       "template": "https://wms.zh.ch/OGDOrthoZH?SERVICE=WMS&VERSION=1.3.0&REQUEST=GetMap&LAYERS=ortho_w_15&FORMAT=image/jpeg&CRS={proj}&WIDTH={width}&HEIGHT={height}&BBOX={bbox}",
-      "projection": "EPSG:3857",
+      "projection": "EPSG:4326",
       "endDate": "2016-01-01T00:00:00.000Z",
       "startDate": "2015-01-01T00:00:00.000Z",
       "zoomExtent": [8, 22],
@@ -51407,7 +51407,7 @@
       "name": "Kanton Zurich, Orthofoto ZH Sommer 2014/15 RGB 10cm",
       "type": "wms",
       "template": "https://wms.zh.ch/OGDOrthoZH?SERVICE=WMS&VERSION=1.3.0&REQUEST=GetMap&LAYERS=ortho_s_14&FORMAT=image/jpeg&CRS={proj}&WIDTH={width}&HEIGHT={height}&BBOX={bbox}",
-      "projection": "EPSG:3857",
+      "projection": "EPSG:4326",
       "endDate": "2015-01-01T00:00:00.000Z",
       "startDate": "2014-01-01T00:00:00.000Z",
       "zoomExtent": [8, 22],
@@ -51917,7 +51917,7 @@
       "name": "Kanton Zurich, Orthofoto ZH Sommer 2018 RGB 10cm",
       "type": "wms",
       "template": "https://wms.zh.ch/OGDOrthoZH?SERVICE=WMS&VERSION=1.3.0&REQUEST=GetMap&LAYERS=ortho&FORMAT=image/jpeg&CRS={proj}&WIDTH={width}&HEIGHT={height}&BBOX={bbox}",
-      "projection": "EPSG:3857",
+      "projection": "EPSG:4326",
       "endDate": "2018-01-01T00:00:00.000Z",
       "startDate": "2018-01-01T00:00:00.000Z",
       "zoomExtent": [8, 22],
@@ -52428,7 +52428,7 @@
       "name": "Kanton Zurich, Terrainschummerung 50cm",
       "type": "wms",
       "template": "https://wms.zh.ch/OGDLidarZH?FORMAT=image/jpeg&VERSION=1.3.0&SERVICE=WMS&REQUEST=GetMap&LAYERS=dtm2014hillshade&CRS={proj}&WIDTH={width}&HEIGHT={height}&BBOX={bbox}",
-      "projection": "EPSG:3857",
+      "projection": "EPSG:4326",
       "endDate": "2014-01-01T00:00:00.000Z",
       "startDate": "2014-01-01T00:00:00.000Z",
       "zoomExtent": [8, 22],
@@ -53067,7 +53067,7 @@
       "name": "Kartverket Contour Lines overlay",
       "type": "wms",
       "template": "https://openwms.statkart.no/skwms1/wms.topo4?FORMAT=image/png&TRANSPARENT=TRUE&VERSION=1.1.1&SERVICE=WMS&REQUEST=GetMap&LAYERS=hoydetall5linje,hoydetall5punkt,hoydepunkt,vannpunkt,hoydekurver_1m,hoydekurver_5m,N50Hoydekurver,N250Hoydekurver,N500Hoydekurver,N1000Hoydekurver,N2000Hoydekurver&STYLES=&SRS={proj}&WIDTH={width}&HEIGHT={height}&BBOX={bbox}",
-      "projection": "EPSG:3857",
+      "projection": "EPSG:4326",
       "zoomExtent": [9, 22],
       "polygon": [
         [
@@ -54441,7 +54441,7 @@
       "name": "Kystverket Navigational Aid overlay",
       "type": "wms",
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@@ -55725,7 +55725,7 @@
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@@ -57185,7 +57185,7 @@
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@@ -57334,7 +57334,7 @@
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@@ -57785,7 +57785,7 @@
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@@ -57907,7 +57907,7 @@
       "name": "MD Transportation Basemap",
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@@ -58151,7 +58151,7 @@
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@@ -58698,7 +58698,7 @@
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@@ -59436,7 +59436,7 @@
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@@ -61203,7 +61203,7 @@
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@@ -64024,7 +64024,7 @@
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@@ -66539,7 +66539,7 @@
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@@ -67873,7 +67873,7 @@
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@@ -68318,7 +68318,7 @@
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@@ -68358,7 +68358,7 @@
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@@ -68995,7 +68995,7 @@
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@@ -69157,7 +69157,7 @@
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@@ -70009,7 +70009,7 @@
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@@ -70155,7 +70155,7 @@
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@@ -70301,7 +70301,7 @@
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@@ -70441,7 +70441,7 @@
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@@ -70580,7 +70580,7 @@
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@@ -70719,7 +70719,7 @@
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@@ -71036,7 +71036,7 @@
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@@ -71567,7 +71567,7 @@
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@@ -71921,7 +71921,7 @@
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@@ -74838,7 +74838,7 @@
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@@ -75112,7 +75112,7 @@
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@@ -75249,7 +75249,7 @@
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       "template": "https://geoservices.wallonie.be/arcgis/services/IMAGERIE/ORTHO_2016/MapServer/WmsServer?FORMAT=image/jpeg&VERSION=1.1.1&SERVICE=WMS&REQUEST=GetMap&LAYERS=0&STYLES=&SRS={proj}&WIDTH={width}&HEIGHT={height}&BBOX={bbox}",
-      "projection": "EPSG:3857",
+      "projection": "EPSG:4326",
       "endDate": "2016-01-01T00:00:00.000Z",
       "startDate": "2016-01-01T00:00:00.000Z",
       "polygon": [
@@ -75386,7 +75386,7 @@
       "name": "SPW(allonie) most recent aerial imagery",
       "type": "wms",
       "template": "https://geoservices.wallonie.be/arcgis/services/IMAGERIE/ORTHO_LAST/MapServer/WmsServer?FORMAT=image/jpeg&VERSION=1.1.1&SERVICE=WMS&REQUEST=GetMap&LAYERS=0&STYLES=&SRS={proj}&WIDTH={width}&HEIGHT={height}&BBOX={bbox}",
-      "projection": "EPSG:3857",
+      "projection": "EPSG:4326",
       "polygon": [
         [
           [5.78257, 49.87573],
@@ -75522,7 +75522,7 @@
       "name": "SPW(allonie) PICC numerical imagery",
       "type": "wms",
       "template": "https://geoservices.wallonie.be/arcgis/services/TOPOGRAPHIE/PICC_VDIFF/MapServer/WmsServer?SERVICE=WMS&VERSION=1.1.1&FORMAT=image/png8&TRANSPARENT=FALSE&REQUEST=GetMap&STYLES=&SRS={proj}&WIDTH={width}&HEIGHT={height}&BBOX={bbox}&LAYERS=0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29",
-      "projection": "EPSG:3857",
+      "projection": "EPSG:4326",
       "polygon": [
         [
           [5.78257, 49.87573],
@@ -75657,7 +75657,7 @@
       "name": "SPW(allonie) shaded relief",
       "type": "wms",
       "template": "https://geoservices.wallonie.be/arcgis/services/RELIEF/WALLONIE_MNT_2013_2014_HILLSHADE/MapServer/WMSServer?FORMAT=image/jpeg&VERSION=1.1.1&SERVICE=WMS&REQUEST=GetMap&LAYERS=0&STYLES=&SRS={proj}&WIDTH={width}&HEIGHT={height}&BBOX={bbox}",
-      "projection": "EPSG:3857",
+      "projection": "EPSG:4326",
       "endDate": "2014-01-01T00:00:00.000Z",
       "startDate": "2013-01-01T00:00:00.000Z",
       "polygon": [
@@ -79179,7 +79179,7 @@
       "name": "Törökbálint orthophoto 2013",
       "type": "wms",
       "template": "https://terkep.torokbalint.hu/mapproxy/service?FORMAT=image/png&VERSION=1.1.1&SERVICE=WMS&REQUEST=GetMap&LAYERS=ORTO_2013_5CM_2013SZEPT_TAKARASSAL_512_512&STYLES=&SRS={proj}&WIDTH={width}&HEIGHT={height}&BBOX={bbox}&TRANSPARENT=true",
-      "projection": "EPSG:3857",
+      "projection": "EPSG:4326",
       "endDate": "2013-09-01T00:00:00.000Z",
       "startDate": "2013-09-01T00:00:00.000Z",
       "polygon": [
@@ -79347,7 +79347,7 @@
       "name": "Törökbálint orthophoto 2015",
       "type": "wms",
       "template": "https://terkep.torokbalint.hu/mapproxy/service?FORMAT=image/png&VERSION=1.1.1&SERVICE=WMS&REQUEST=GetMap&LAYERS=TBORTO_2015_20160218&STYLES=&SRS={proj}&WIDTH={width}&HEIGHT={height}&BBOX={bbox}&TRANSPARENT=true",
-      "projection": "EPSG:3857",
+      "projection": "EPSG:4326",
       "endDate": "2015-01-01T00:00:00.000Z",
       "startDate": "2015-01-01T00:00:00.000Z",
       "polygon": [
@@ -81363,7 +81363,7 @@
       "name": "UrbIS-Ortho 2016",
       "type": "wms",
       "template": "https://geoservices-urbis.irisnet.be/geoserver/ows?SERVICE=WMS&VERSION=1.3.0&REQUEST=GetMap&FORMAT=image/png&TRANSPARENT=true&LAYERS=Urbis:Ortho2016&WIDTH={width}&HEIGHT={height}&CRS={proj}&STYLES=&BBOX={bbox}",
-      "projection": "EPSG:3857",
+      "projection": "EPSG:4326",
       "endDate": "2016-01-01T00:00:00.000Z",
       "startDate": "2016-01-01T00:00:00.000Z",
       "polygon": [
@@ -81441,7 +81441,7 @@
       "name": "UrbIS-Ortho 2017",
       "type": "wms",
       "template": "https://geoservices-urbis.irisnet.be/geoserver/ows?SERVICE=WMS&VERSION=1.3.0&REQUEST=GetMap&FORMAT=image/png&TRANSPARENT=true&LAYERS=Urbis:Ortho2017&WIDTH={width}&HEIGHT={height}&CRS={proj}&STYLES=&BBOX={bbox}",
-      "projection": "EPSG:3857",
+      "projection": "EPSG:4326",
       "endDate": "2017-01-01T00:00:00.000Z",
       "startDate": "2017-01-01T00:00:00.000Z",
       "polygon": [
@@ -81519,7 +81519,7 @@
       "name": "UrbIS-Ortho 2018",
       "type": "wms",
       "template": "https://geoservices-urbis.irisnet.be/geoserver/ows?SERVICE=WMS&VERSION=1.3.0&REQUEST=GetMap&FORMAT=image/png&TRANSPARENT=true&LAYERS=Urbis:Ortho2018&WIDTH={width}&HEIGHT={height}&CRS={proj}&STYLES=&BBOX={bbox}",
-      "projection": "EPSG:3857",
+      "projection": "EPSG:4326",
       "endDate": "2018-01-01T00:00:00.000Z",
       "startDate": "2018-01-01T00:00:00.000Z",
       "polygon": [
@@ -81597,7 +81597,7 @@
       "name": "UrbIS-Ortho 2019",
       "type": "wms",
       "template": "https://geoservices-urbis.irisnet.be/geoserver/ows?SERVICE=WMS&VERSION=1.3.0&REQUEST=GetMap&FORMAT=image/png&TRANSPARENT=true&LAYERS=Urbis:Ortho2019&WIDTH={width}&HEIGHT={height}&CRS={proj}&STYLES=&BBOX={bbox}",
-      "projection": "EPSG:3857",
+      "projection": "EPSG:4326",
       "endDate": "2019-01-01T00:00:00.000Z",
       "startDate": "2019-01-01T00:00:00.000Z",
       "polygon": [
@@ -81676,7 +81676,7 @@
       "name": "UrbisAdm FR",
       "type": "wms",
       "template": "https://geoservices-urbis.irisnet.be/geoserver/ows?SERVICE=WMS&VERSION=1.3.0&REQUEST=GetMap&FORMAT=image/png&TRANSPARENT=true&LAYERS=urbisFR&WIDTH={width}&HEIGHT={height}&CRS={proj}&STYLES=&BBOX={bbox}",
-      "projection": "EPSG:3857",
+      "projection": "EPSG:4326",
       "polygon": [
         [
           [4.4347, 50.77647],
@@ -81766,7 +81766,7 @@
       "name": "UrbisAdm NL",
       "type": "wms",
       "template": "https://geoservices-urbis.irisnet.be/geoserver/ows?SERVICE=WMS&VERSION=1.3.0&REQUEST=GetMap&FORMAT=image/png&TRANSPARENT=true&LAYERS=urbisNL&WIDTH={width}&HEIGHT={height}&CRS={proj}&STYLES=&BBOX={bbox}",
-      "projection": "EPSG:3857",
+      "projection": "EPSG:4326",
       "polygon": [
         [
           [4.4347, 50.77647],
@@ -83389,7 +83389,7 @@
       "name": "VoGIS: DGM (Terrain model)",
       "type": "wms",
       "template": "http://vogis.cnv.at/mapserver/mapserv?map=i_hoehen_und_gelaende_r_wms.map&FORMAT=image/jpeg&VERSION=1.1.1&SERVICE=WMS&REQUEST=GetMap&LAYERS=schummerung_50cm_terrain&STYLES=&SRS={proj}&WIDTH={width}&HEIGHT={height}&BBOX={bbox}",
-      "projection": "EPSG:3857",
+      "projection": "EPSG:4326",
       "polygon": [
         [
           [9.96805, 47.54631],
@@ -83652,7 +83652,7 @@
       "name": "VoGIS: DOM (Surface model)",
       "type": "wms",
       "template": "http://vogis.cnv.at/mapserver/mapserv?map=i_hoehen_und_gelaende_r_wms.map&FORMAT=image/jpeg&VERSION=1.1.1&SERVICE=WMS&REQUEST=GetMap&LAYERS=schummerung_50cm_surface&STYLES=&SRS={proj}&WIDTH={width}&HEIGHT={height}&BBOX={bbox}",
-      "projection": "EPSG:3857",
+      "projection": "EPSG:4326",
       "polygon": [
         [
           [9.96805, 47.54631],
@@ -83915,7 +83915,7 @@
       "name": "VoGIS: Echtfarbenbild 2012 (12cm)",
       "type": "wms",
       "template": "http://vogis.cnv.at/mapserver/mapserv?map=i_luftbilder_r_wms.map&FORMAT=image/jpeg&VERSION=1.1.1&SERVICE=WMS&REQUEST=GetMap&LAYERS=ef2012_12cm&STYLES=&SRS={proj}&WIDTH={width}&HEIGHT={height}&BBOX={bbox}",
-      "projection": "EPSG:3857",
+      "projection": "EPSG:4326",
       "endDate": "2012-01-01T00:00:00.000Z",
       "startDate": "2012-01-01T00:00:00.000Z",
       "polygon": [
@@ -83961,7 +83961,7 @@
       "name": "VoGIS: Echtfarbenbild 2015 (10cm)",
       "type": "wms",
       "template": "http://vogis.cnv.at/mapserver/mapserv?map=i_luftbilder_r_wms.map&FORMAT=image/jpeg&VERSION=1.1.1&SERVICE=WMS&REQUEST=GetMap&LAYERS=ef2015_10cm&STYLES=&SRS={proj}&WIDTH={width}&HEIGHT={height}&BBOX={bbox}",
-      "projection": "EPSG:3857",
+      "projection": "EPSG:4326",
       "endDate": "2015-01-01T00:00:00.000Z",
       "startDate": "2015-01-01T00:00:00.000Z",
       "polygon": [
@@ -84007,7 +84007,7 @@
       "name": "VoGIS: Echtfarbenbild 2018 (10cm)",
       "type": "wms",
       "template": "http://vogis.cnv.at/mapserver/mapserv?map=i_luftbilder_r_wms.map&FORMAT=image/jpeg&VERSION=1.1.1&SERVICE=WMS&REQUEST=GetMap&LAYERS=ef2018_10cm&STYLES=&SRS={proj}&WIDTH={width}&HEIGHT={height}&BBOX={bbox}",
-      "projection": "EPSG:3857",
+      "projection": "EPSG:4326",
       "endDate": "2018-01-01T00:00:00.000Z",
       "startDate": "2018-01-01T00:00:00.000Z",
       "polygon": [
@@ -84053,7 +84053,7 @@
       "name": "VoGIS: Echtfarbenbild Winter 2015 (20cm)",
       "type": "wms",
       "template": "http://vogis.cnv.at/mapserver/mapserv?map=i_luftbilder_r_wms.map&FORMAT=image/jpeg&VERSION=1.1.1&SERVICE=WMS&REQUEST=GetMap&LAYERS=wi2015_20cm&STYLES=&SRS={proj}&WIDTH={width}&HEIGHT={height}&BBOX={bbox}",
-      "projection": "EPSG:3857",
+      "projection": "EPSG:4326",
       "endDate": "2015-01-01T00:00:00.000Z",
       "startDate": "2015-01-01T00:00:00.000Z",
       "polygon": [
@@ -84133,7 +84133,7 @@
       "name": "Wrocław: Orthophotomap 2015 (aerial image)",
       "type": "wms",
       "template": "http://gis1.um.wroc.pl/arcgis/services/ogc/OGC_ortofoto_2015/MapServer/WmsServer?FORMAT=image/jpeg&VERSION=1.1.1&SERVICE=WMS&REQUEST=GetMap&LAYERS=0&STYLES=&SRS={proj}&WIDTH={width}&HEIGHT={height}&BBOX={bbox}",
-      "projection": "EPSG:3857",
+      "projection": "EPSG:4326",
       "endDate": "2015-01-01T00:00:00.000Z",
       "startDate": "2015-01-01T00:00:00.000Z",
       "zoomExtent": [0, 23],
diff --git a/data/update_imagery.js b/data/update_imagery.js
index 21abd9076..18f7190a4 100644
--- a/data/update_imagery.js
+++ b/data/update_imagery.js
@@ -1,175 +1,170 @@
 const fs = require('fs');
 const sources = require('editor-layer-index/imagery.json');
 const prettyStringify = require('json-stringify-pretty-compact');
-var imagery = [];
+
+let imagery = [];
 
 // ignore imagery more than 20 years old..
-var cutoffDate = new Date();
+let cutoffDate = new Date();
 cutoffDate.setFullYear(cutoffDate.getFullYear() - 20);
 
-const blacklist = {
-    'osmbe': true,                        // 'OpenStreetMap (Belgian Style)'
-    'osmfr': true,                        // 'OpenStreetMap (French Style)'
-    'osm-mapnik-german_style': true,      // 'OpenStreetMap (German Style)'
-    'HDM_HOT': true,                      // 'OpenStreetMap (HOT Style)'
-    'osm-mapnik-black_and_white': true,   // 'OpenStreetMap (Standard Black & White)'
-    'osm-mapnik-no_labels': true,         // 'OpenStreetMap (Mapnik, no labels)'
-    'OpenStreetMap-turistautak': true,    // 'OpenStreetMap (turistautak)'
 
-    'hike_n_bike': true,                  // 'Hike & Bike'
-    'landsat': true,                      // 'Landsat'
-    'skobbler': true,                     // 'Skobbler'
-    'public_transport_oepnv': true,       // 'Public Transport (ÖPNV)'
-    'tf-cycle': true,                     // 'Thunderforest OpenCycleMap'
-    'tf-landscape': true,                 // 'Thunderforest Landscape'
-    'qa_no_address': true,                // 'QA No Address'
-    'wikimedia-map': true,                // 'Wikimedia Map'
+const keep = [
+  // Add custom sources here if needed.
+];
 
-    'openinframap-petroleum': true,
-    'openinframap-power': true,
-    'openinframap-telecoms': true,
-    'openpt_map': true,
-    'openrailwaymap': true,
-    'openseamap': true,
-    'opensnowmap-overlay': true,
+const discard = {
+  'osmbe': true,                        // 'OpenStreetMap (Belgian Style)'
+  'osmfr': true,                        // 'OpenStreetMap (French Style)'
+  'osm-mapnik-german_style': true,      // 'OpenStreetMap (German Style)'
+  'HDM_HOT': true,                      // 'OpenStreetMap (HOT Style)'
+  'osm-mapnik-black_and_white': true,   // 'OpenStreetMap (Standard Black & White)'
+  'osm-mapnik-no_labels': true,         // 'OpenStreetMap (Mapnik, no labels)'
+  'OpenStreetMap-turistautak': true,    // 'OpenStreetMap (turistautak)'
 
-    'US-TIGER-Roads-2012': true,
-    'US-TIGER-Roads-2014': true,
+  'hike_n_bike': true,                  // 'Hike & Bike'
+  'landsat': true,                      // 'Landsat'
+  'skobbler': true,                     // 'Skobbler'
+  'public_transport_oepnv': true,       // 'Public Transport (ÖPNV)'
+  'tf-cycle': true,                     // 'Thunderforest OpenCycleMap'
+  'tf-landscape': true,                 // 'Thunderforest Landscape'
+  'qa_no_address': true,                // 'QA No Address'
+  'wikimedia-map': true,                // 'Wikimedia Map'
 
-    'Waymarked_Trails-Cycling': true,
-    'Waymarked_Trails-Hiking': true,
-    'Waymarked_Trails-Horse_Riding': true,
-    'Waymarked_Trails-MTB': true,
-    'Waymarked_Trails-Skating': true,
-    'Waymarked_Trails-Winter_Sports': true,
+  'openinframap-petroleum': true,
+  'openinframap-power': true,
+  'openinframap-telecoms': true,
+  'openpt_map': true,
+  'openrailwaymap': true,
+  'openseamap': true,
+  'opensnowmap-overlay': true,
 
-    'OSM_Inspector-Addresses': true,
-    'OSM_Inspector-Geometry': true,
-    'OSM_Inspector-Highways': true,
-    'OSM_Inspector-Multipolygon': true,
-    'OSM_Inspector-Places': true,
-    'OSM_Inspector-Routing': true,
-    'OSM_Inspector-Tagging': true,
+  'US-TIGER-Roads-2012': true,
+  'US-TIGER-Roads-2014': true,
 
-    'EOXAT2018CLOUDLESS': true
+  'Waymarked_Trails-Cycling': true,
+  'Waymarked_Trails-Hiking': true,
+  'Waymarked_Trails-Horse_Riding': true,
+  'Waymarked_Trails-MTB': true,
+  'Waymarked_Trails-Skating': true,
+  'Waymarked_Trails-Winter_Sports': true,
+
+  'OSM_Inspector-Addresses': true,
+  'OSM_Inspector-Geometry': true,
+  'OSM_Inspector-Highways': true,
+  'OSM_Inspector-Multipolygon': true,
+  'OSM_Inspector-Places': true,
+  'OSM_Inspector-Routing': true,
+  'OSM_Inspector-Tagging': true,
+
+  'EOXAT2018CLOUDLESS': true
 };
 
-const supportedWMSProjections = [
-    'EPSG:3857',
-    'EPSG:4326',
-    'EPSG:900913', // EPSG:3857 alternatives codes
-    'EPSG:3587',
-    'EPSG:54004',
-    'EPSG:41001',
-    'EPSG:102113',
-    'EPSG:102100',
-    'EPSG:3785'
-];
-
-const whitelist = [
-    // Add custom sources here if needed.
-];
+const supportedWMSProjections = {
+  'EPSG:4326': true,
+  'EPSG:3857': true,
+  'EPSG:900913': true,
+  'EPSG:3587': true,
+  'EPSG:54004': true,
+  'EPSG:41001': true,
+  'EPSG:102113': true,
+  'EPSG:102100': true,
+  'EPSG:3785': true
+};
 
 
-sources.concat(whitelist).forEach(function(source) {
-    if (source.type !== 'tms' && source.type !== 'wms' && source.type !== 'bing') return;
-    if (source.id in blacklist) return;
-    var supportedProjection = source.available_projections &&
-        supportedWMSProjections.find(function(supportedProjection) {
-            return source.available_projections.some(function(projection) {
-                return supportedProjection === projection;
-            })
-        });
-    if (source.type === 'wms' && supportedProjection === undefined) return;
-    if (source.type === 'wms' && sources.some(function(otherSource) {
-        return otherSource.name === source.name && otherSource.type !== source.type;
-    })) return;
+sources.concat(keep).forEach(source => {
+  if (source.type !== 'tms' && source.type !== 'wms' && source.type !== 'bing') return;
+  if (source.id in discard) return;
 
-    var im = {
-        id: source.id,
-        name: source.name,
-        type: source.type,
-        template: source.url
-    };
+  let im = {
+    id: source.id,
+    name: source.name,
+    type: source.type,
+    template: source.url
+  };
+
+  // Some sources support 512px tiles
+  if (source.id === 'Mapbox') {
+    im.template = im.template.replace('.jpg', '@2x.jpg');
+    im.tileSize = 512;
+  } else if (source.id === 'mtbmap-no') {
+    im.tileSize = 512;
+  }
+
+  // Some WMS sources are supported, check projection
+  if (source.type === 'wms') {
+    const projection = (source.available_projections || []).find(p => supportedWMSProjections[p]);
+    if (!projection) return;
+    if (sources.some(other => other.name === source.name && other.type !== source.type)) return;
+    im.projection = projection;
+  }
 
 
-    // supports 512px tiles
-    if (source.id === 'Mapbox') {
-        im.template = im.template.replace('.jpg', '@2x.jpg');
-        im.tileSize = 512;
-    } else if (source.id === 'mtbmap-no') {
-        im.tileSize = 512;
+  let startDate, endDate, isValid;
+
+  if (source.end_date) {
+    endDate = new Date(source.end_date);
+    isValid = !isNaN(endDate.getTime());
+    if (isValid) {
+      if (endDate <= cutoffDate) return;  // too old
+      im.endDate = endDate;
     }
+  }
 
-    if (source.type === 'wms') {
-        im.projection = supportedProjection;
+  if (source.start_date) {
+    startDate = new Date(source.start_date);
+    isValid = !isNaN(startDate.getTime());
+    if (isValid) {
+      im.startDate = startDate;
     }
+  }
 
-    var startDate, endDate, isValid;
+  let extent = source.extent || {};
+  if (extent.min_zoom || extent.max_zoom) {
+    im.zoomExtent = [
+      extent.min_zoom || 0,
+      extent.max_zoom || 22
+    ];
+  }
 
-    if (source.end_date) {
-        endDate = new Date(source.end_date);
-        isValid = !isNaN(endDate.getTime());
-        if (isValid) {
-            if (endDate <= cutoffDate) return;  // too old
-            im.endDate = endDate;
-        }
+  if (extent.polygon) {
+    im.polygon = extent.polygon;
+  } else if (extent.bbox) {
+    im.polygon = [[
+      [extent.bbox.min_lon, extent.bbox.min_lat],
+      [extent.bbox.min_lon, extent.bbox.max_lat],
+      [extent.bbox.max_lon, extent.bbox.max_lat],
+      [extent.bbox.max_lon, extent.bbox.min_lat],
+      [extent.bbox.min_lon, extent.bbox.min_lat]
+    ]];
+  }
+
+  if (source.id === 'mapbox_locator_overlay') {
+    im.overzoom = false;
+  }
+
+  const attribution = source.attribution || {};
+  if (attribution.url) {
+    im.terms_url = attribution.url;
+  }
+  if (attribution.text) {
+    im.terms_text = attribution.text;
+  }
+  if (attribution.html) {
+    im.terms_html = attribution.html;
+  }
+
+  ['best', 'default', 'description', 'icon', 'overlay', 'tileSize'].forEach(prop => {
+    if (source[prop]) {
+      im[prop] = source[prop];
     }
+  });
 
-    if (source.start_date) {
-        startDate = new Date(source.start_date);
-        isValid = !isNaN(startDate.getTime());
-        if (isValid) {
-            im.startDate = startDate;
-        }
-    }
-
-    var extent = source.extent || {};
-    if (extent.min_zoom || extent.max_zoom) {
-        im.zoomExtent = [
-            extent.min_zoom || 0,
-            extent.max_zoom || 22
-        ];
-    }
-
-    if (extent.polygon) {
-        im.polygon = extent.polygon;
-    } else if (extent.bbox) {
-        im.polygon = [[
-            [extent.bbox.min_lon, extent.bbox.min_lat],
-            [extent.bbox.min_lon, extent.bbox.max_lat],
-            [extent.bbox.max_lon, extent.bbox.max_lat],
-            [extent.bbox.max_lon, extent.bbox.min_lat],
-            [extent.bbox.min_lon, extent.bbox.min_lat]
-        ]];
-    }
-
-    if (source.id === 'mapbox_locator_overlay') {
-        im.overzoom = false;
-    }
-
-    var attribution = source.attribution || {};
-    if (attribution.url) {
-        im.terms_url = attribution.url;
-    }
-    if (attribution.text) {
-        im.terms_text = attribution.text;
-    }
-    if (attribution.html) {
-        im.terms_html = attribution.html;
-    }
-
-    ['best', 'default', 'description', 'icon', 'overlay', 'tileSize'].forEach(function(a) {
-        if (source[a]) {
-            im[a] = source[a];
-        }
-    });
-
-    imagery.push(im);
+  imagery.push(im);
 });
 
-imagery.sort(function(a, b) {
-    return a.name.localeCompare(b.name);
-});
+
+imagery.sort((a, b) => a.name.localeCompare(b.name));
 
 fs.writeFileSync('data/imagery.json', prettyStringify({ dataImagery: imagery }));