| Format | Syntax | Notes |
| PNG | format=image/png | Default |
| PNG8 | format=image/png8 | Same as PNG, but computes an optimal 256 color (8 bit) palette, so the image size is usually smaller |
| JPEG | format=image/jpeg | |
| GIF | format=image/gif | |
| TIFF | format=image/tiff | |
| TIFF8 | format=image/tiff8 | Same as TIFF, but computes an optimal 256 color (8 bit) palette, so the image size is usually smaller |
| GeoTIFF | format=image/geotiff | Same as TIFF, but includes extra GeoTIFF metadata |
| GeoTIFF8 | format=image/geotiff8 | Same as TIFF, but includes extra GeoTIFF metadata and computes an optimal 256 color (8 bit) palette, so the image size is usually smaller |
| SVG | format=image/svg | |
| format=application/pdf | ||
| GeoRSS | format=rss | |
| KML | format=kml | |
| KMZ | format=kmz | |
| OpenLayers | format=application/openlayers | Generates an OpenLayers HTML application. |
http://localhost:8081/geoserver/nurc/wms service=WMS&version=1.1.0&request=GetMap&layers=nurc:Arc_Sample&styles=&bbox=-183.6,-183.6,183.6,183.6&width=512&height=512&srs=EPSG:4326&format=image/png
可以从geoserver服务器得到一张图片nurc-Arc_Sample.png
原文地址：http://www.cnblogs.com/cugwx/p/3725333.html
