> For the complete documentation index, see [llms.txt](https://docs.simplio3d.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.simplio3d.com/learning-the-app/materials/texture-and-normal-map-limits.md).

# Texture & Normal Map Limits

First, before applying any texture to a 3D model (or a specific 3D part), it is mandatory to create and apply a UV map before uploading the file to Simplio3D. If the 3D model does not have a UV map, the texture will not be applied, and the configurator will display only a plain color. You can get more information about this process in [Prepare 3D models](/getting-started/prepare-3d-models.md) chapter.

To ensure an optimal balance between **visual quality** and **application performance**, we recommend that all **textures and normal maps** used in Simplio3D projects should not exceed a resolution of **1024 × 1024 pixels**.

Using higher resolutions (2048, 4096, or more) can significantly impact performance, especially on devices with limited graphics processing power, such as mobile phones or older computers. Large texture sizes increase loading times, memory usage, and rendering overhead, which may result in reduced frame rates or lag during the configuration experience.

**Best practice:**

* Keep textures and normal maps at or below **1024 × 1024**.
* Compress and optimize textures before uploading.
* Use lower resolutions when possible for less detailed surfaces.
* Reserve higher resolutions only if absolutely necessary for critical details.

By following these guidelines, you will maintain both **fast performance** and **a smooth user experience** across all devices.