Crop a sprite

• Remove transparent pixels from the mesh, to improve performance by reducing the number of unneeded pixels Unity renders.
• Crop a sprite to a custom shape.

Open the Custom Outline tab of the Sprite Editor

1. In the Hierarchy window, select the sprite GameObject.
2. In the
   Inspector

   ?

   window, in the
   Sprite Renderer

   ?

   component, select Open Sprite Editor.
3. Select the Custom Outline tab in the top-left dropdown. Unity displays the Outline Tools overlay.

Remove transparent pixels from the mesh

1. Select Generate to automatically generate a mesh that follows the opaque parts of the sprite. Unity displays the outline of the mesh in white. Each point is a vertex of the mesh.
2. Edit the outline if needed. For more information, refer to the Edit an outline section.
3. To save the shape, select Apply in the toolbar. Unity now renders only the area within the outline.

Crop a sprite to a custom shape

1. To create an outline, click and drag a rectangle. You can also follow the steps in the previous section to generate an outline.
   You can add multiple outlines to the same sprite.
2. Edit the outline. For more information, refer to the Edit an outline section.
3. To save the shape, select Apply in the toolbar. Unity now renders only the area within the outline.

Edit an outline

• To move a point, select and drag it.
• To add a point, click on an edge.
• To delete a point, select it and press Delete.
• To move an edge, hold Ctrl and select and drag the edge.

Additional resources

• Custom Outline tab reference for the Sprite Editor window
• Create sprites from a texture