> For the complete documentation index, see [llms.txt](https://upland-3d.gitbook.io/upland-3d/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://upland-3d.gitbook.io/upland-3d/fundamentals/characteristics.md).

# Characteristics

* File type: GLTF - (GLB not allowed)
* GTLF jpg texture image should be compressed
* Transform Y Up
* Mesh should include tangents, normals, UVs
* Compression level: 6

<figure><img src="https://1769794590-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FDHWwPrTAwLL81PbfiBvW%2Fuploads%2FD8uuR017RsEIdHBMwUmk%2FScreenshot%202023-05-04%20222617.png?alt=media&amp;token=9d4013a2-c4cd-41ac-9fa6-42499380d13f" alt=""><figcaption></figcaption></figure>

<figure><img src="https://1769794590-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FDHWwPrTAwLL81PbfiBvW%2Fuploads%2FwRIDjonNEI1PxsnDSQC1%2FExport%20Settings.jpg?alt=media&amp;token=34f7f62b-bbf8-4352-a941-7368202be5c9" alt=""><figcaption></figcaption></figure>