blur()
Quick Summary for blur()

The <strong><code>blur()</code></strong> <a href="/en-US/docs/Web/CSS">CSS</a> <a href="/en-US/docs/Web/CSS/CSSFunctions">function</a> applies a <a href="https://en.wikipedia.org/wiki/Gaussianblur" class="external" rel=" noopener">Gaussian blur</a> to the input image. Its result is a <a href="/en-US/docs/Web/CSS/filter-function"><code>&lt;filter-function&gt;</code></a>.

Code Usage for blur()
blur(radius)
More Details for blur()

blur()

The blur() CSS function applies a Gaussian blur to the input image. Its result is a <filter-function>.

Syntax

blur(radius)

Parameters

radius

The 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 lacuna value for interpolation is 0.

Examples

Setting a blur with pixels and with rem

blur(0)        /* No effect */ blur(8px)      /* Blur with 8px radius */ blur(1.17rem)  /* Blur with 1.17rem radius */

Specifications

Specification
Filter Effects Module Level 2 # funcdef-filter-blur

See also

<filter-function> brightness() contrast() drop-shadow() grayscale() hue-rotate() invert() opacity() saturate() sepia()

Last modified: Aug 12, 2021, by MDN contributors

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