The blur() CSS function applies a Gaussian blur to the input image. Its result is a <filter-function>.
The blur() CSS function applies a Gaussian blur to the input image. Its result is a <filter-function>.
blur(radius)
radiusThe radius of the blur, specified as a <length>. It defines the value of the standard deviation to the Gaussian function, i.e., how many pixels on the screen blend into each other; thus, a larger value will create more blur. A value of 0 leaves the input unchanged. The initial value for interpolation is 0.
blur(0) /* No effect */ blur(8px) /* Blur with 8px radius */ blur(1.17rem) /* Blur with 1.17rem radius */
| Specification |
|---|
| Filter Effects Module Level 1 # funcdef-filter-blur |
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
blur |
18 | 12 | 35 | No | 15 | 6 | 4.4 | 53 | 35 | 14 | 6 | 6.0 |
The other <filter-function> functions available to be used in values of the filter and backdrop-filter properties include:
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https://developer.mozilla.org/en-US/docs/Web/CSS/filter-function/blur