# Blurring

[i3,](https://docs.transparentedge.eu/config/i3) our image management solution, allows you to dynamically and transparently blur your images.

To do this, we use our `TCDN-i3-transform` header, specifying the desired operation, which in this case is `blur.` Unlike other operations, such as the [conversion to WebP](https://docs.transparentedge.eu/config/i3/conversion-to-webp) format, this operation requires an optional parameter for its execution: the percentage of blur to be applied to the original image. 

The exact syntax for this operation is as follows: `blur[:`*`<porcentaje>`*`]`. If no percentage is specified, the default value of **50%** will be assumed.&#x20;

For example, if you wanted all images on your domain `mi-dominio.es` that are located at the `URL /estaticos/imagenes` to be served with a 75% blur effect, you can simply deploy a [VCL](https://docs.transparentedge.eu/config/vcl) [configuration](https://docs.transparentedge.eu/config) similar to the following from the [dashboard:](https://docs.transparentedge.eu/getting-started/dashboard)

```c
# i3 - blur
sub vcl_recv {
    if (req.http.host == "www.mi-dominio.es") {
        if (req.url ~ "^/estaticos/imagenes/") {
            set req.http.TCDN-i3-transform = "blur:75%";
        }
    }
}
```