# Packing sprites into atlas textures

> Optimize the performance of your project by combining multiple textures into a single texture.

To reduce the number of [draw calls](/engine/6000.6/manual/analysis/graphics-performance-profiling/reduce-draw-calls/draw-call-batching/draw-call-batching.md) Unity sends to the GPU, create a sprite atlas. A sprite atlas combines multiple textures into a single texture. Unity only needs to create one draw call for all the sprites in a sprite atlas.

| **Page**                                                                                                                                    | **Description**                                                                                                    |
| ------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------ |
| [Sprite atlases](/engine/6000.6/manual/unity2d/sprite/atlas/atlas-introduction.md)                                                          | Learn about sprite atlases and how to use them to optimize performance.                                            |
| [Create a sprite atlas](/engine/6000.6/manual/unity2d/sprite/atlas/create-sprite-atlas.md)                                                  | Create a sprite atlas, add sprites and textures to it, and analyze and optimize it.                                |
| [Create lower resolution versions of sprite atlases](/engine/6000.6/manual/unity2d/sprite/atlas/master-variant-sprite-atlases.md)           | To create different versions of the same sprite atlas for different platforms, create sprite atlas variants.       |
| [Load sprite atlases manually at runtime](/engine/6000.6/manual/unity2d/sprite/atlas/load-sprite-atlas-spriteatlasmanageratlasrequested.md) | To avoid Unity loading sprite atlases when your project starts, load the sprite atlas yourself at runtime instead. |
| [Upgrade Sprite Atlas V1 assets](/engine/6000.6/manual/unity2d/sprite/atlas/sprite-atlas-v2.md)                                             | Upgrade Sprite Atlas V1 assets from Unity version 2022.2 and earlier to Sprite Atlas V2 assets.                    |
| [Sprite Atlas Inspector window reference](/engine/6000.6/manual/unity2d/sprite/atlas/sprite-atlas-reference.md)                             | Explore the properties and settings you can use to customize a sprite atlas.                                       |

## Additional resources

* [Sprite atlas best practices in Unity 6](https://www.youtube.com/watch?v=hXlpnwD-TgY) on the Unity YouTube channel
* [2D game art, animation, and lighting for artists](https://unity.com/resources/2d-game-art-animation-lighting-unity-6-3-lts?isGated=false)