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Cesium Version 1.51 Released

We are happy to announce the release of Cesium 1.51. Highlights include:

  • Added WMS-T (time) support in WebMapServiceImageryProvider.
  • Added cutoutRectangle to ImageryLayer, which allows cutting out rectangular areas in imagery layers to reveal underlying imagery.
  • Ground atmosphere, sky atmosphere, and fog colors now match.
  • Shrunk minified and gzipped Cesium.js by 27 KB (~3.7%) by delay loading seldom-used third-party dependencies.

For the full list of changes, see the change log.


  • Cesium ion’s tiling pipeline is now available. You can upload LAS/LAZ, CityGML, KML/Collada, OBJ, or DAE data to Cesium ion for tiling to 3D Tiles.

ion tiling

  • Cesium is now connected to Safe Software’s FME data integration platform, making it easy to process and transform 3D geospatial data with FME, connect to Cesium ion to seamlessly upload, tile, and host, and stream to CesiumJS.

Cesium and FME integration

A RoadRunner model imported into Cesium

A RoadRunner model imported into Cesium. GIS data credit: U.S. Geological Survey; 3D artist: Tom Vu, VectorZero

Cesium at work in DroneDeploy

DroneDeploy point clouds.




We have a new showcases up on our demos page.