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backdrop-filter

The backdrop-filter CSS property lets you apply graphical effects such as blurring or color shifting to the area behind an element. Because it applies to everything behind the element, to see the effect you must make the element or its background at least partially transparent.

/* Keyword value */
backdrop-filter: none;

/* URL to SVG filter */
backdrop-filter: url(commonfilters.svg#filter);

/* <filter-function> values */
backdrop-filter: blur(2px);
backdrop-filter: brightness(60%);
backdrop-filter: contrast(40%);
backdrop-filter: drop-shadow(4px 4px 10px blue);
backdrop-filter: grayscale(30%);
backdrop-filter: hue-rotate(120deg);
backdrop-filter: invert(70%);
backdrop-filter: opacity(20%);
backdrop-filter: sepia(90%);
backdrop-filter: saturate(80%);

/* Multiple filters */
backdrop-filter: url(filters.svg#filter) blur(4px) saturate(150%);

/* Global values */
backdrop-filter: inherit;
backdrop-filter: initial;
backdrop-filter: unset;

Syntax

Values

none
No filter is applied to the backdrop.
<filter-function-list>
A space-separated list of <filter-function>s or an SVG filter that will be applied to the backdrop.

Formal definition

Initial value none
Applies to all elements; In SVG, it applies to container elements excluding the defs element and all graphics elements
Inherited no
Computed value as specified
Animation type a filter function list

Formal syntax

none | <filter-function-list>

where
<filter-function-list> = [ <filter-function> | <url> ]+

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

where
<blur()> = blur( <length> )
<brightness()> = brightness( <number-percentage> )
<contrast()> = contrast( [ <number-percentage> ] )
<drop-shadow()> = drop-shadow( <length>{2,3} <color>? )
<grayscale()> = grayscale( <number-percentage> )
<hue-rotate()> = hue-rotate( <angle> )
<invert()> = invert( <number-percentage> )
<opacity()> = opacity( [ <number-percentage> ] )
<saturate()> = saturate( <number-percentage> )
<sepia()> = sepia( <number-percentage> )

where
<number-percentage> = <number> | <percentage>
<color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>

where
<rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]? ) | rgb( <number>{3} [ / <alpha-value> ]? ) | rgb( <percentage>#{3} , <alpha-value>? ) | rgb( <number>#{3} , <alpha-value>? )
<rgba()> = rgba( <percentage>{3} [ / <alpha-value> ]? ) | rgba( <number>{3} [ / <alpha-value> ]? ) | rgba( <percentage>#{3} , <alpha-value>? ) | rgba( <number>#{3} , <alpha-value>? )
<hsl()> = hsl( <hue> <percentage> <percentage> [ / <alpha-value> ]? ) | hsl( <hue>, <percentage>, <percentage>, <alpha-value>? )
<hsla()> = hsla( <hue> <percentage> <percentage> [ / <alpha-value> ]? ) | hsla( <hue>, <percentage>, <percentage>, <alpha-value>? )

where
<alpha-value> = <number> | <percentage>
<hue> = <number> | <angle>

Examples

CSS

.box {
  background-color: rgba(255, 255, 255, 0.3);
  border-radius: 5px;
  font-family: sans-serif;
  text-align: center;
  line-height: 1; 
 -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);  
  max-width: 50%;
  max-height: 50%;
  padding: 20px 40px;
}

html,
body {
  height: 100%;
  width: 100%;
}

body {
  background-image: url(https://picsum.photos/id/1080/6858/4574), linear-gradient(rgb(219, 166, 166), rgb(0, 0, 172));
  background-position: center center;
  background-repeat: no-repeat;
  background-size: cover;
}

.container {
  align-items: center;
  display: flex;
  justify-content: center;
  height: 100%;
  width: 100%;
}

HTML

<div class="container">
  <div class="box">
    <p>backdrop-filter: blur(10px)</p>
  </div>
</div>

Result

Specifications

Specification Status Comment
Filter Effects Module Level 2
The definition of 'backdrop-filter' in that specification.
Editor's Draft Initial definition.

Browser compatibilityUpdate compatibility data on GitHub

Desktop
Chrome Edge Firefox Internet Explorer Opera Safari
backdrop-filter 76
76
47
Disabled
Disabled From version 47: this feature is behind the Enable Experimental Web Platform Features preference. To change preferences in Chrome, visit chrome://flags.
17 70
Disabled
70
Disabled
Disabled From version 70: this feature is behind the layout.css.backdrop-filter.enabled preference (needs to be set to true) and the gfx.webrender.all preference (needs to be set to true). To change preferences in Firefox, visit about:config.
No 34
Disabled
34
Disabled
Disabled From version 34: this feature is behind the Enable Experimental Web Platform Features preference.
9
Prefixed
9
Prefixed
Prefixed Implemented with the vendor prefix: -webkit-
Mobile
Android webview Chrome for Android Firefox for Android Opera for Android Safari on iOS Samsung Internet
backdrop-filter 76 76
76
47
Disabled
Disabled From version 47: this feature is behind the Enable Experimental Web Platform Features preference. To change preferences in Chrome, visit chrome://flags.
No
No
See bug 1178765.
54
54
34
Disabled
Disabled From version 34: this feature is behind the Enable Experimental Web Platform Features preference.
9
Prefixed
9
Prefixed
Prefixed Implemented with the vendor prefix: -webkit-
12.0

See also

© 2005–2020 Mozilla and individual contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/CSS/backdrop-filter