# Load multiple geoJSON files

**URL:** <https://community.cesium.com/t/load-multiple-geojson-files/5000>\
**Category:** CesiumJS\
**Created:** [January 9, 2017, 7:35am UTC](https://community.cesium.com/t/load-multiple-geojson-files/5000 "2017-01-09T07:35:38Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![709313693](https://avatars.discourse-cdn.com/v4/letter/7/e47774/32.png) [@709313693](https://community.cesium.com/u/709313693)\
**Post date:** [January 9, 2017, 7:35am UTC](https://community.cesium.com/t/load-multiple-geojson-files/5000/1 "2017-01-09T07:35:38Z")

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I am a cesium rookie, have some problems. I need loading multiple geojson and they probably have 1 million, but direct loading can cause a crash. so what should I do? asynchronous or web worker(TaskProcessor)? 

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[![](https://lh3.googleusercontent.com/-zDUM3z6qr9k/WHM9Fzj41HI/AAAAAAAAABA/k04onL67nG0dAsaGKZglLEU-Lv3-WhVKgCLcB/s1600/QQ%25E5%259B%25BE%25E7%2589%258720170109153412.png)](https://lh3.googleusercontent.com/-zDUM3z6qr9k/WHM9Fzj41HI/AAAAAAAAABA/k04onL67nG0dAsaGKZglLEU-Lv3-WhVKgCLcB/s1600/QQ%25E5%259B%25BE%25E7%2589%258720170109153412.png)

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**Author:** ![hannah](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/hannah/32/4509_2.png) [@hannah](https://community.cesium.com/u/hannah)\
**Post date:** [January 9, 2017, 1:48pm UTC](https://community.cesium.com/t/load-multiple-geojson-files/5000/2 "2017-01-09T13:48:29Z")

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Hello,

It is likely that if you are trying to load that many files the browser is running out of memory. You might want to consider converting your GeoJSON into 3D Tiles. 3D tiles is a more web-friendly format and was designed specifically to handle very large datasets like this.

You can learn more about the format in this forum post: [https://groups.google.com/d/msg/cesium-dev/tCCooBxpZFU/7hxT\_E4pGgAJ](https://groups.google.com/d/msg/cesium-dev/tCCooBxpZFU/7hxT_E4pGgAJ)

Best,

Hannah

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**Author:** ![709313693](https://avatars.discourse-cdn.com/v4/letter/7/e47774/32.png) [@709313693](https://community.cesium.com/u/709313693)\
**Post date:** [January 10, 2017, 12:42am UTC](https://community.cesium.com/t/load-multiple-geojson-files/5000/3 "2017-01-10T00:42:06Z")

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Thanks Hannah, although I can find some introduction about 3dtitles, but I do not know what formats can be converted and how to convert.Is there a URL to explain?

On January 9, 2017 9:48:29 UTC 8 on Monday afternoon, Hannah Pinkos wrote:

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**Author:** ![hannah](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/hannah/32/4509_2.png) [@hannah](https://community.cesium.com/u/hannah)\
**Post date:** [January 10, 2017, 4:30pm UTC](https://community.cesium.com/t/load-multiple-geojson-files/5000/4 "2017-01-10T16:30:33Z")

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Sorry, I don’t know if there is any open source project for converting GeoJSON to 3D Tiles, but you can learn more about the vector data format here: [https://github.com/AnalyticalGraphicsInc/3d-tiles/tree/master/TileFormats/VectorData](https://github.com/AnalyticalGraphicsInc/3d-tiles/tree/master/TileFormats/VectorData)

Best,

Hannah

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<div class="post-metadata">

**Author:** ![709313693](https://avatars.discourse-cdn.com/v4/letter/7/e47774/32.png) [@709313693](https://community.cesium.com/u/709313693)\
**Post date:** [January 11, 2017, 12:20am UTC](https://community.cesium.com/t/load-multiple-geojson-files/5000/5 "2017-01-11T00:20:39Z")

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Ok,but still thank you