> For the complete documentation index, see [llms.txt](https://docs.cloudimage.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.cloudimage.io/transformations/image-filters/blur.md).

# Blur

Applies Gaussian blur to the image. The parameter value (X) is the kernel size of the filter in pixels.

<mark style="color:green;">**blur=X**</mark>

## Examples

| Preview                          | Syntax                                                                                                                                                                                                     |
| -------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| ![](/files/gIBXVlYABkGVuaLcdr2H) | <p>Original image:<br><a href="https://doc.cloudimg.io/https://samples.scaleflex.com/ny_doc.jpg">/samples.scaleflex.com/ny\_doc.jpg</a></p>                                                                |
| ![](/files/YDWJjqyQM0PaqwEL4th6) | <p>Blur applied:<br><a href="https://doc.cloudimg.io/https://samples.scaleflex.com/ny_doc.jpg?blur=6">/samples.scaleflex.com/ny\_doc.jpg?<mark style="color:green;"><strong>blur=6</strong></mark></a></p> |