# GLTF2Export.GLBAsync

**URL:** <https://forum.babylonjs.com/t/gltf2export-glbasync/42857>\
**Category:** Questions\
**Created:** [July 31, 2023, 2:13pm UTC](https://forum.babylonjs.com/t/gltf2export-glbasync/42857 "2023-07-31T14:13:11Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Karim\_Salam](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/karim_salam/32/30201_2.png) [@Karim\_Salam](https://forum.babylonjs.com/u/Karim_Salam)\
**Post date:** [July 31, 2023, 2:13pm UTC](https://forum.babylonjs.com/t/gltf2export-glbasync/42857/1 "2023-07-31T14:13:11Z")

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Hello,  
I am trying to use GLTF2Export.GLBAsync to export my model  
the original model size is 300kb i am loading the model twice and i am exporting it using GLTF2Export.GLBAsync the downloaded model is 47mgb

(the loaded model is not draco compressed)

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**Author:** ![carolhmj](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/carolhmj/32/25918_2.png) [@carolhmj](https://forum.babylonjs.com/u/carolhmj)\
**Post date:** [July 31, 2023, 3:47pm UTC](https://forum.babylonjs.com/t/gltf2export-glbasync/42857/2 "2023-07-31T15:47:49Z")

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Hello,

GLBAsync exports everything on the scene unless you specify otherwise in the options, so the export might be taking more than the two models? I’m not sure if there might be other types of compression other than draco applied on your GLTF file that we aren’t applying on export? cc @bghgary

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**Author:** ![Evgeni\_Popov](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/evgeni_popov/32/4432_2.png) [@Evgeni\_Popov](https://forum.babylonjs.com/u/Evgeni_Popov)\
**Post date:** [July 31, 2023, 4:21pm UTC](https://forum.babylonjs.com/t/gltf2export-glbasync/42857/3 "2023-07-31T16:21:49Z")

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Incidentally, I seem to remember that all images are exported in .png format, whatever the original format (?).

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**Author:** ![bghgary](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/bghgary/32/48532_2.png) [@bghgary](https://forum.babylonjs.com/u/bghgary)\
**Post date:** [July 31, 2023, 5:32pm UTC](https://forum.babylonjs.com/t/gltf2export-glbasync/42857/4 "2023-07-31T17:32:49Z")

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It could be a lot of things. Our exporter doesn’t do some optimizations that can cause the model to get bigger. Is there any way you can send us the model so we can review?