# WebMapServiceImageryProvider EPSG code

**URL:** <https://community.cesium.com/t/webmapserviceimageryprovider-epsg-code/17075>\
**Category:** CesiumJS\
**Created:** [January 28, 2022, 11:44am UTC](https://community.cesium.com/t/webmapserviceimageryprovider-epsg-code/17075 "2022-01-28T11:44:01Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![theuns](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/theuns/32/3476_2.png) [@theuns](https://community.cesium.com/u/theuns)\
**Post date:** [January 28, 2022, 11:44am UTC](https://community.cesium.com/t/webmapserviceimageryprovider-epsg-code/17075/1 "2022-01-28T11:44:01Z")

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I have GeoServer that provide raster data for Cesium. Currently my data is in EPSG:3857 projection.  
If Cesium would like to use the data in EPSG:4326 by default there is the transformation overhead on the client side, I would like to side step this.

What is the best projection for the data to be served in from the server?

Regards