# icon_size var (world)

Source: https://ref.dm-lang.org/world/var/icon_size

### Default value
> 32

This is the tile size that will be used as a default for icons in the world. It can be set to a single number that represents both the width and height, or you can use a format like "[width]x[height]" (such as "16x48") to specify width and height separately.

This value affects several calculations, including icon operations and gliding between turfs.

> [!note]
> 
> If you do not use a square icon size and you are using a topdown map format, you may experience display issues if setting `client.dir` to `EAST` or `WEST`. A non-square tile with a topdown map format will also interfere with pixel movement. For this reason, square sizes are recommended when using any topdown-view map format.

### See also
- [map_format var (world)](https://ref.dm-lang.org/world/var/map_format.md)
- [step_size var (movable atoms)](https://ref.dm-lang.org/atom/movable/var/step_size.md)
- [Gliding](https://ref.dm-lang.org/notes/gliding.md)
- [Pixel movement](https://ref.dm-lang.org/notes/pixel-movement.md)