1. PNG
http://localhost:8080/geoserver/wms?service=WMS&version=1.1.0&request=GetMap&layers=spearfish&styles=&bbox=589425.9342365642,4913959.224611808,609518.6719560538,4928082.949945881&width=512&height=359&srs=EPSG:26713&
format=image/png8

2. 1.3.0
http://localhost:8080/geoserver/wms?service=WMS&
version=1.3.0&
request=GetMap&layers=spearfish&styles=&bbox=589425.9342365642,4913959.224611808,609518.6719560538,4928082.949945881&width=512&height=359&
crs=EPSG:26713&
format=image/png8

3. BBOX - zoom 2x
http://localhost:8080/geoserver/wms?service=WMS&version=1.3.0&request=GetMap&layers=spearfish&styles=&
bbox=594448,4917489,604494,4924551&
width=512&height=359&crs=EPSG:26713&format=image/png8

bbox=minx,miny,maxx,maxy
platí pro některé systémy a pro všechny u verze 1.1.1

4. Zadat BBOX ve WGS84
minx = <westBoundLongitude>-103.87791475407893</westBoundLongitude>
maxx = <eastBoundLongitude>-103.62278893469492</eastBoundLongitude>
miny = <southBoundLatitude>44.37246687108142</southBoundLatitude>
maxy = <northBoundLatitude>44.50235105543566</northBoundLatitude>

version=1.1.1
bbox=-103.87791475407893,44.37246687108142,-103.62278893469492,44.50235105543566
srs=EPSG:4326

version=1.3.0
bbox=44.37246687108142,-103.87791475407893,44.50235105543566,-103.62278893469492
crs=EPSG:4326

http://localhost:8080/geoserver/wms?service=WMS&version=1.1.0&request=GetMap&layers=spearfish&styles=&bbox=-103.87791475407893,44.37246687108142,-103.62278893469492,44.50235105543566&width=512&height=359&srs=EPSG:4326&format=image/png8
http://localhost:8080/geoserver/wms?service=WMS&version=1.3.0&request=GetMap&layers=spearfish&styles=&bbox=44.37246687108142,-103.87791475407893,44.50235105543566,-103.62278893469492&width=512&height=359&crs=EPSG:4326&format=image/png8