# Gaussian blur filter

Source: https://ref.dm-lang.org/notes/filters/blur
Added in BYOND 512.

**Format**

> filter(type="blur", ...)

**Args**

> size: Amount of blur (defaults to 1)

Blurs the image by a certain amount. The size of the blur can roughly be thought of in "pixels" worth of blur.

> [!note]
> 
> Large blurs will result in reduced performance. The highest size that can be handled easily in this filter is 6. Higher sizes require multiple passes, although the filter will "cheat" and use low-quality passes for much higher sizes.

### See also
- [Motion blur (filters)](https://ref.dm-lang.org/notes/filters/motion_blur.md)
- [Radial blur (filters)](https://ref.dm-lang.org/notes/filters/radial_blur.md)
- [Angular blur (filters)](https://ref.dm-lang.org/notes/filters/angular_blur.md)
- [Drop shadow (filters)](https://ref.dm-lang.org/notes/filters/drop_shadow.md)