Tile Set Importer Inspector window reference

Explore the settings you can use to configure a tileset, which automatically creates tiles from a texture and its spritesA 2D graphic objects. If you are used to working in 3D, Sprites are essentially just standard textures but there are special techniques for combining and managing sprite textures for efficiency and convenience during development. More info
See in Glossary. For more information, refer to Create a tile palette.

Property	Description
Open Tile Palette Window	Opens the Tile Palette window so you can paint tiles with the tile set.

Texture Sources

The properties in this section let you select the texture you want to create tiles from.

Property	Description
Texture	Sets the texture Unity creates tiles from.
Tile Template	Sets the optional tile template that determines how Unity creates tiles from the texture. If you don’t set a tile template, Unity creates a tile for each sprite in the texture. For more information, refer to Customize how Unity creates tiles from a texture.
Add (+)	Adds a new element with a Texture and a Tile Template field.
Remove (-)	Removes the selected element, or removes the last element if no element is selected.

Palette Grid

Property	Description
Cell Layout	Sets the layout of the cells. The options are: Rectangle: Lays out the cells as a rectangular grid. Hexagon: Lays out the cells as a hexagonal grid. Isometric: Lays out the cells as an isometric grid. Isometric Z as Y: Lays out the cells as an isometric grid, where each tile has a z value that represents its 3D height.
Hexagon Layout	Sets the type of the hexagonal grid. This option is available only if you set Grid to Hexagon. The options are: Point Top: Aligns the hexagons so they have a point at the top. Flat Top: Aligns the hexagons so they have a flat edge at the top.
Cell Sizing	Sets the size of the cells in the tile palette. The options are: Automatic: Sets the cell size automatically based on the size of the tile at the bottom-left of the tile palette. Manual: Sets the cell size manually in units.
Transparency Sort Mode	Sets the method Unity uses to calculate the depth of tiles for sorting. This property has transparency in its name because Unity renders 2D objects during the transparent render pass. For more information, refer to Sort sprites. The options are: Default: Sorts using Perspective or Orthographic, depending on the Projection property of the camera. Perspective: Calculates the depth of a tile as the distance between the tile and the center point of the camera. Use this option for isometric games. Orthographic: Calculates the depth of a tile as the distance between the tile and the camera plane. Use this option for top-down games. Custom Axis: Uses a custom axis to calculate depth.
Transparency Sort Axis	Sets the x-axis, y-axis, and z-axis of the sorting axis if you set Transparency Sort Mode to Custom Axis. For example, a vertical axis (0, 1, 0) means higher GameObjectsThe fundamental object in Unity scenes, which can represent characters, props, scenery, cameras, waypoints, and more. A GameObject’s functionality is defined by the Components attached to it. More info See in Glossary are further away, which is useful for top-down games.

Sprite Atlas Settings

This section is available only if you enable Create Atlas. For more information, refer to Packing sprites into atlas textures.

Property	Description
Create Atlas	Creates a sprite atlasGraphics: A utility that packs several sprite textures tightly together within a single texture known as an atlas. More info. 2D: A texture that is composed of several smaller textures. Also referred to as a texture atlas, image sprite, sprite sheet or packed texture. More info. See in Glossary from the Texture Sources.
Type	This property isn’t available in this window.
Include in Build	Enables Unity loading the sprite atlas and attaching it to your sprites when your project starts. Disable this property to load the sprite atlas yourself at runtime instead. For more information, refer to Load sprite atlases manually at runtime.

Packing

These properties are available only if you set Type to Master.

Property	Description
Allow Rotation	Rotates sprites in the sprite atlas texture to find a better fit. Disable this property if you pack Canvas UI elements, to avoid UI elements rotating.
Tight Packing	Packs each sprite based on its meshThe main graphics primitive of Unity. Meshes make up a large part of your 3D worlds. Unity supports triangulated or Quadrangulated polygon meshes. Nurbs, Nurms, Subdiv surfaces must be converted to polygons. More info See in Glossary shape from the Custom Outline tab of the Sprite Editor window, instead of the default rectangle.
Alpha Dilation	Expands the colors of the edge of the sprite into adjacent transparent pixelsThe smallest unit in a computer image. Pixel size depends on your screen resolution. Pixel lighting is calculated at every screen pixel. More info See in Glossary, to prevent visible edges.
Padding	Sets how many pixels Unity uses between individual sprites, to prevent pixels from one sprite appearing in an adjacent sprite. The default value is 4.

Texture

Property	Description
Read/Write	Allows you to access the data of the sprite atlas in C# scriptsA piece of code that allows you to create your own Components, trigger game events, modify Component properties over time and respond to user input in any way you like. More info See in Glossary using methods such as Texture2D.SetPixels. If you enable this property, Unity creates a duplicate copy of the texture data, which can reduce performance. This property only has an effect if the sprite atlas is uncompressed or uses DXT compressionA method of storing data that reduces the amount of storage space it requires. See Texture Compression, Animation Compression, Audio Compression, Build Compression. See in Glossary.
Generate Mip Maps	Creates mipmap levels for the sprite atlas texture. For more information, refer to Mipmaps.
sRGB	Stores the sprite atlas colors in gamma space. For more information, refer to Color spaces.
Filter Mode	Specifies how Unity filters the sprite atlas when it stretches. The options are: Point: Uses the nearest pixel. This makes the sprite atlas appear pixelated. Bilinear: Uses a weighted average of the four nearest texels. This makes the sprite atlas appear blurry when you magnify it. Trilinear: Uses a weighted average of the two nearest mipmap levels, which Unity filters using bilinear filtering. This creates a soft transition between mipmap levels, but the sprite atlas is slightly more blurry.
Aniso LevelThe anisotropic filtering (AF) level of a texture. Allows you to increase texture quality when viewing a texture at a steep angle. Good for floor and ground textures. More info See in Glossary	Sets the anisotropic filtering level of the sprite atlas. This increases texture quality when you view the sprite atlas at a steep angle. This property is available only if you enable Generate Mip Maps and set Filter Mode to Bilinear or Trilinear.

Show Platform Settings

The properties in this section set the size and format of the sprite atlas texture.

Property	Description
Show Platform Settings For	Selects which texture the properties in the Default tab and the platform-specific tabs display. Select either the main texture of the sprite atlas, or a secondary texture. For more information about secondary textures, refer to Add normal map and mask map textures to a sprite.

Default tab

The Default tab lets you set the final size and format of the sprite atlas texture on all platforms.

Property	Description
Max Texture Size	Sets the maximum dimensions of the sprite atlas in pixels. If any of the sprites or textures are larger than the Max Texture Size, Unity ignores the Max Texture Size setting and uses the minimum size that contains the sprites and textures at their original dimensions. Important: Don’t use Max Texture Size values smaller than 0.25 for variant sprite atlases, otherwise Unity compresses the sprites and textures twice.
Format	Sets the number of channels and the data type of the sprite atlas, except for platforms you override in the platform-specific override tabs. The default is Automatic, where Unity selects a value based on the number of channels in the sprites, and the Compression setting. For more information, refer to Default formats.
Compression	Sets the compression of the sprite atlas. Unity uses this setting to select an appropriate texture format. This setting is only available if you set Format to Automatic. For more information, refer to Default formats. The options are: None: Don’t compress the sprite atlas. Low Quality: Compresses the sprite atlas using a low-quality texture format. The compressed texture might use less memory than Normal Quality. Normal Quality: Compresses the sprite atlas using a standard texture format. High Quality: Compresses the sprite atlas using a high-quality texture format. The compressed texture might use more memory than Normal Quality.
Use Crunch Compression	Compresses the sprite atlas using the Crunch compression library, which helps Unity use the lowest possible amount of space. This setting is only available if you set Format to Automatic. Unity decompresses the sprite atlas to DXT or ETC format on the CPU, then uploads it to the GPU at runtime. If you enable this setting, textures might take a long time to compress, but decompression at runtime is fast.
Compressor Quality	Sets the image quality of the compressed texture, if you enable Use Crunch Compression. A higher value might use more memory and increase compression time.

Platform-specific overrides tabs

The platform-specific override tabs let you override the settings in the Default tab for specific platforms. For more information about build platforms, refer to Build Profiles window reference.

Property	Description
Max Texture Size	Sets the maximum dimensions of the imported texture in pixels. If any of the sprites or textures are larger than the Max Texture Size, Unity ignores the Max Texture Size setting and uses the minimum size that contains the sprites and textures at their original dimensions. Important: Don’t use Max Texture Size values smaller than 0.25 for variant sprite atlases, otherwise Unity compresses the sprites and textures twice.
Format	Sets the sprite atlas format. The available texture formatsA file format for handling textures during real-time rendering by 3D graphics hardware, such as a graphics card or mobile device. More info See in Glossary depend on the platform. Unity selects the default format based on the platform and the settings in the Default tab. For more information, refer to Default formats.
Compressor quality	Sets the quality of the sprite atlas that compression produces. This setting isn’t available for all texture formats.

Additional resources

Tile Palette window reference

Paint tiles into the scene