filter - CSS: Cascading Style Sheets 编辑

The filter CSS property applies graphical effects like blur or color shift to an element. Filters are commonly used to adjust the rendering of images, backgrounds, and borders.

Included in the CSS standard are several functions that achieve predefined effects. You can also reference an SVG filter with a URL to an SVG filter element.

The source for this interactive example is stored in a GitHub repository. If you'd like to contribute to the interactive examples project, please clone https://github.com/mdn/interactive-examples and send us a pull request.

The source for this interactive example is stored in a GitHub repository. If you'd like to contribute to the interactive examples project, please clone https://github.com/mdn/interactive-examples and send us a pull request.

Syntax

/* URL to SVG filter */
filter: url("filters.svg#filter-id");

/* <filter-function> values */
filter: blur(5px);
filter: brightness(0.4);
filter: contrast(200%);
filter: drop-shadow(16px 16px 20px blue);
filter: grayscale(50%);
filter: hue-rotate(90deg);
filter: invert(75%);
filter: opacity(25%);
filter: saturate(30%);
filter: sepia(60%);

/* Multiple filters */
filter: contrast(175%) brightness(3%);

/* Use no filter */
filter: none;

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

With a function, use the following:

filter: <filter-function> [<filter-function>]* | none

For a reference to an SVG <filter> element, use the following:

filter: url(file.svg#filter-element-id)

Interpolation

If both the beginning and end filters have a function list of the same length without <url>(), each of their filter functions is interpolated according to its specific rules. If they have different lengths, the missing equivalent filter functions from the longer list are added to the end of the shorter list using their lacuna values, then all filter functions are interpolated according to their specific rules. If one filter is none, it is replaced with the filter functions list of the other one using the filter function default values, then all filter functions are interpolated according to their specific rules. Otherwise, discrete interpolation is used.

Functions

The filter property is specified as none or one or more of the functions listed below. If the parameter for any function is invalid, the function returns none. Except where noted, the functions that take a value expressed with a percent sign (as in 34%) also accept the value expressed as decimal (as in 0.34).

When a single filter property has two or more functions it's results will be different from when two or more filter properties are separately applied with the same functions.

SVG filter

url()

Takes an URI pointing to an SVG filter, which may be embedded in an external XML file.

filter: url(resources.svg#c1)

Filter functions

blur()

The blur() fucntion applies a Gaussian blur to the input image. The value of radius defines the value of the standard deviation to the Gaussian function, or how many pixels on the screen blend into each other, so a larger value will create more blur. The lacuna value for interpolation is 0. The parameter is specified as a CSS length, but does not accept percentage values.

filter: blur(5px)

  <table class="standard-table">
  <thead>
    <tr>
      <th style="text-align: left;" scope="col">Original image</th>
      <th style="text-align: left;" scope="col">Live example</th>
      <th style="text-align: left;" scope="col">SVG Equivalent</th>
      <th style="text-align: left;" scope="col">Static example</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td><img alt="Test_Form.jpg" id="img1" class="internal default" src="/files/3710/Test_Form_2.jpg" style="width: 100%;" /></td>
      <td><img alt="Test_Form.jpg" id="img2" class="internal default" src="/files/3710/Test_Form_2.jpg" style="width: 100%;" /></td>
      <td>
        <div class="svg-container">
          <svg id="img3" overflow="visible" viewbox="0 0 212 161" color-interpolation-filters="sRGB">
            <filter id="svgBlur" x="-5%" y="-5%" width="110%" height="110%">
              <feGaussianBlur in="SourceGraphic" stdDeviation="3.5"/>
            </filter>
            <image xlink:href="/files/3710/Test_Form_2.jpeg" filter="url(#svgBlur)" width="212px" height="161px"/>
          </svg>
        </div>
      </td>
      <td><img alt="Test_Form_s.jpg" id="img4" class="internal default" src="/files/3711/Test_Form_2_s.jpg" style="width: 100%;" /></td>
    </tr>
  </tbody>
</table>

html {
  height:100%;
}
body {
  font: 14px/1.286 "Lucida Grande", "Lucida Sans Unicode", "DejaVu Sans", Lucida, Arial, Helvetica, sans-serif;
  color: rgb(51, 51, 51);
  height:100%;
  overflow:hidden;
}
#img2 {
  width:100%;
  height:auto;
  -webkit-filter:blur(5px);
  -ms-filter:blur(5px);
  filter:blur(5px); }
table.standard-table {
  border: 1px solid rgb(187, 187, 187);
  border-collapse: collapse;
  border-spacing: 0;
  margin: 0 0 1.286em;
  height: 100%;
  width: 85%;
}
table.standard-table th {
  border: 1px solid rgb(187, 187, 187);
  padding: 0px 5px;
  background: none repeat scroll 0% 0% rgb(238, 238, 238);
  text-align: left;
  font-weight: bold;
}
table.standard-table td {
  padding: 5px;
  border: 1px solid rgb(204, 204, 204);
  text-align: left;
  vertical-align: top;
  width:25%;
  height:auto;
}
#img3 {
  height:100%;
}

<svg style="position: absolute; top: -99999px" xmlns="http://www.w3.org/2000/svg">
  <filter id="svgBlur" x="-5%" y="-5%" width="110%" height="110%">
    <feGaussianBlur in="SourceGraphic" stdDeviation="5"/>
  </filter>
</svg>

brightness()

The brightness() function applies a linear multiplier to the input image, making it appear more or less bright. A value of 0% will create an image that is completely black. A value of 100% leaves the input unchanged. Other values are linear multipliers on the effect. Values of an amount over 100% are allowed, providing brighter results. The lacuna value for interpolation is 1.

filter: brightness(2)

<svg style="position: absolute; top: -99999px" xmlns="http://www.w3.org/2000/svg">
  <filter id="brightness">
    <feComponentTransfer>
      <feFuncR type="linear" slope="[amount]"/>
      <feFuncG type="linear" slope="[amount]"/>
      <feFuncB type="linear" slope="[amount]"/>
    </feComponentTransfer>
  </filter>
</svg>

<table class="standard-table">
  <thead>
    <tr>
      <th style="text-align: left;" scope="col">Original image</th>
      <th style="text-align: left;" scope="col">Live example</th>
      <th style="text-align: left;" scope="col">SVG Equivalent</th>
      <th style="text-align: left;" scope="col">Static example</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td><img alt="Test_Form.jpg" id="img1" class="internal default" src="/files/3708/Test_Form.jpg" style="width: 100%;" /></td>
      <td><img alt="Test_Form.jpg" id="img2" class="internal default" src="/files/3708/Test_Form.jpg" style="width: 100%;" /></td>
      <td><div class="svg-container"><svg xmlns="http://www.w3.org/2000/svg" id="img3" viewbox="0 0 286 217" color-interpolation-filters="sRGB">
 <filter id="brightness">
    <feComponentTransfer>
        <feFuncR type="linear" slope="2"/>
        <feFuncG type="linear" slope="2"/>
        <feFuncB type="linear" slope="2"/>
    </feComponentTransfer>
  </filter>
  <image xlink:href="/files/3708/Test_Form.jpg" filter="url(#brightness)" width="286px" height="217px" />
</svg><div></td>
      <td><img alt="Test_Form_s.jpg" id="img4" class="internal default" src="/files/3709/Test_Form_s.jpg" style="width: 100%;" /></td>
    </tr>
  </tbody>
</table>

html {
  height:100%;
}
body {
  font: 14px/1.286 "Lucida Grande","Lucida Sans Unicode","DejaVu Sans",Lucida,Arial,Helvetica,sans-serif;
  color: rgb(51, 51, 51);
  height:100%;
  overflow:hidden;
}
#img2 {
  width:100%;
  height:auto;
  -moz-filter:brightness(2);
  -webkit-filter:brightness(2);
  -ms-filter:brightness(2);
  filter:brightness(2); }
table.standard-table {
  border: 1px solid rgb(187, 187, 187);
  border-collapse: collapse;
  border-spacing: 0px;
  margin: 0px 0px 1.286em;
  height:100%;
  width: 85%;
}
table.standard-table th {
  border: 1px solid rgb(187, 187, 187);
  padding: 0px 5px;
  background: none repeat scroll 0% 0% rgb(238, 238, 238);
  text-align: left;
  font-weight: bold;
}
table.standard-table td {
  padding: 5px;
  border: 1px solid rgb(204, 204, 204);
  text-align: left;
  vertical-align: top;
  width:25%;
  height:auto;
}
#img3 {
  height:100%;
}

contrast()

The contrast() function adjusts the contrast of the input image. A value of 0% will create an image that is completely gray. A value of 100% leaves the input unchanged. Values of an amount over 100% are allowed, providing results with more contrast. The lacuna value for interpolation is 1.

filter: contrast(200%)

<svg style="position: absolute; top: -99999px" xmlns="http://www.w3.org/2000/svg">
  <filter id="contrast">
    <feComponentTransfer>
      <feFuncR type="linear" slope="[amount]" intercept="-(0.5 * [amount]) + 0.5"/>
      <feFuncG type="linear" slope="[amount]" intercept="-(0.5 * [amount]) + 0.5"/>
      <feFuncB type="linear" slope="[amount]" intercept="-(0.5 * [amount]) + 0.5"/>
    </feComponentTransfer>
  </filter>
</svg>

<table class="standard-table">
  <thead>
    <tr>
      <th style="text-align: left;" scope="col">Original image</th>
      <th style="text-align: left;" scope="col">Live example</th>
      <th style="text-align: left;" scope="col">SVG Equivalent</th>
      <th style="text-align: left;" scope="col">Static example</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td><img alt="Test_Form_3.jpeg" id="img1" class="internal default" src="/files/3712/Test_Form_3.jpeg" style="width: 100%;" /></td>
      <td><img alt="Test_Form_3.jpg" id="img2" class="internal default" src="/files/3712/Test_Form_3.jpeg" style="width: 100%;" /></td>
      <td><div class="svg-container"><svg xmlns="http://www.w3.org/2000/svg" id="img3" viewbox="0 0 240 151" color-interpolation-filters="sRGB">
 <filter id="contrast">
    <feComponentTransfer>
      <feFuncR type="linear" slope="2" intercept="-0.5"/>
      <feFuncG type="linear" slope="2" intercept="-0.5"/>
      <feFuncB type="linear" slope="2" intercept="-0.5"/>
    </feComponentTransfer>
  </filter>
  <image xlink:href="/files/3712/Test_Form_3.jpeg" filter="url(#contrast)" width="240px" height="151px" />
</svg><div></td>
      <td><img alt="Test_Form_s.jpg" id="img4" class="internal default" src="/files/3713/Test_Form_3_s.jpg" style="width: 100%;" /></td>
    </tr>
  </tbody>
</table>

html {
  height:100%;
}
body {
  font: 14px/1.286 "Lucida Grande","Lucida Sans Unicode","DejaVu Sans",Lucida,Arial,Helvetica,sans-serif;
  color: rgb(51, 51, 51);
  height:100%;
  overflow:hidden;
}
#img2 {
  width:100%;
  height:auto;
  -moz-filter:contrast(200%);
  -webkit-filter:contrast(200%);
  -ms-filter:contrast(200%);
  filter:contrast(200%); }
table.standard-table {
  border: 1px solid rgb(187, 187, 187);
  border-collapse: collapse;
  border-spacing: 0px;
  margin: 0px 0px 1.286em;
  width: 85%;
  height: 100%;
}
table.standard-table th {
  border: 1px solid rgb(187, 187, 187);
  padding: 0px 5px;
  background: none repeat scroll 0% 0% rgb(238, 238, 238);
  text-align: left;
  font-weight: bold;
}
table.standard-table td {
  padding: 5px;
  border: 1px solid rgb(204, 204, 204);
  text-align: left;
  vertical-align: top;
  width:25%;
  height:auto;
}
#img3 {
  height:100%;
}

drop-shadow()

The drop-shadow() function applies a drop shadow effect to the input image. A drop shadow is effectively a blurred, offset version of the input image's alpha mask drawn in a particular color, composited below the image. The function accepts a parameter of type <shadow> (defined in CSS3 Backgrounds), with the exception that the inset keyword and spread parameter are not allowed. This function is similar to the more established box-shadow property; the difference is that with filters, some browsers provide hardware acceleration for better performance. The parameters of the <shadow> parameter are as follows:

<offset-x> <offset-y> (required)

These are two <length> values to set the shadow offset. <offset-x> specifies the horizontal distance. Negative values place the shadow to the left of the element. <offset-y> specifies the vertical distance. Negative values place the shadow above the element. See <length> for possible units.
If both values are 0, the shadow is placed behind the element (and may generate a blur effect if <blur-radius> and/or <spread-radius> is set).

<blur-radius> (optional)

This is a third <length> value. The larger this value, the bigger the blur, so the shadow becomes bigger and lighter. Negative values are not allowed. If not specified, it will be 0 (the shadow's edge is sharp).

<color> (optional)

See <color> values for possible keywords and notations. If not specified, the color used depends on the browser - it is usually the value of the <color> property, but note that Safari currently paints a transparent shadow in this case.

filter: drop-shadow(16px 16px 10px black)

<svg style="position: absolute; top: -999999px" xmlns="http://www.w3.org/2000/svg">
 <filter id="drop-shadow">
    <feGaussianBlur in="SourceAlpha" stdDeviation="[radius]"/>
    <feOffset dx="[offset-x]" dy="[offset-y]" result="offsetblur"/>
    <feFlood flood-color="[color]"/>
    <feComposite in2="offsetblur" operator="in"/>
    <feMerge>
      <feMergeNode/>
      <feMergeNode in="SourceGraphic"/>
    </feMerge>
  </filter>
</svg>

<table class="standard-table">
  <thead>
    <tr>
      <th style="text-align: left;" scope="col">Original image</th>
      <th style="text-align: left;" scope="col">Live example</th>
      <th style="text-align: left;" scope="col">SVG Equivalent</th>
      <th style="text-align: left;" scope="col">Static example</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td><img alt="Test_Form_4.jpeg" id="img1" class="internal default" src="/files/3714/Test_Form_4.jpeg" style="width: 100%;" /></td>
      <td><img alt="Test_Form_4.jpg" id="img2" class="internal default" src="/files/3714/Test_Form_4.jpeg" style="width: 100%;" /></td>
      <td>
        <div class="svg-container">
          <svg xmlns="http://www.w3.org/2000/svg" id="img3" overflow="visible" viewbox="0 0 213 161" color-interpolation-filters="sRGB">
            <defs>
              <image id="MyImage" xlink:href="/files/3714/Test_Form_4.jpeg" width="213px" height="161px"/>
            </defs>
            <filter id="drop-shadow" x="-50%" y="-50%" width="200%" height="200%">
              <feOffset dx="9" dy="9" in="SourceAlpha"/>
              <feGaussianBlur stdDeviation="5"/>
            </filter>
            <use xlink:href="#MyImage" filter="url(#drop-shadow)"/>
            <use xlink:href="#MyImage"/>
          </svg>
        </div>
      </td>
      <td><img alt="Test_Form_4_s.jpg" id="img4" class="internal default" src="/files/3715/Test_Form_4_s.jpg" style="width: 100%;" /></td>
    </tr>
    <tr>
      <td><img alt="Test_Form_4 distorded border - Original image" id="img11" class="internal default" src="/files/8467/Test_Form_4_irregular-shape_opacity-gradient.png" style="width: 100%;" /></td>
      <td><img alt="Test_Form_4 distorded border - Live example" id="img12" class="internal default" src="/files/8467/Test_Form_4_irregular-shape_opacity-gradient.png" style="width: 100%;" /></td>
      <td>
        <div class="svg-container">
          <svg xmlns="http://www.w3.org/2000/svg" id="img13" overflow="visible" viewbox="0 0 213 161" color-interpolation-filters="sRGB">
            <defs>
              <image id="MyImage2" xlink:href="/files/8467/Test_Form_4_irregular-shape_opacity-gradient.png" width="213px" height="161px"/>
            </defs>
            <filter id="drop-shadow2" x="-50%" y="-50%" width="200%" height="200%">
              <feOffset dx="5" dy="5.5" in="SourceAlpha"/>
              <feGaussianBlur stdDeviation="2.5"/>
              <feComponentTransfer>
                <feFuncA type="table" tableValues="0 0.8"/>
              </feComponentTransfer>
            </filter>
            <use xlink:href="#MyImage2" filter="url(#drop-shadow2)"/>
            <use xlink:href="#MyImage2"/>
          </svg>
        </div>
      </td>
      <td><img alt="Test_Form_4 distorded border drop shadow - Static example" id="img14" class="internal default" src="/files/8469/Test_Form_4_irregular-shape_opacity-gradient_drop-shadow.png" style="width: 100%;" /></td>
    </tr>
  </tbody>
</table>

html {
  height:100%;
}
body {
  font: 14px/1.286 "Lucida Grande","Lucida Sans Unicode","DejaVu Sans",Lucida,Arial,Helvetica,sans-serif;
  color: rgb(51, 51, 51);
  height:100%;
  overflow:hidden;
}
#img2 {
  width:100%;
  height:auto;
  -moz-filter: drop-shadow(16px 16px 10px black);
  -webkit-filter: drop-shadow(16px 16px 10px black);
  -ms-filter: drop-shadow(16px 16px 10px black);
  filter: drop-shadow(16px 16px 10px black);
}
#img12 {
  width:100%;
  height:auto;
  -moz-filter: drop-shadow(8px 9px 5px rgba(0,0,0,.8));
  -webkit-filter: drop-shadow(8px 9px 5px rgba(0,0,0,.8));
  -ms-filter: drop-shadow(8px 9px 5px rgba(0,0,0,.8));
  filter: drop-shadow(8px 9px 5px rgba(0,0,0,.8));
}
table.standard-table {
  border: 1px solid rgb(187, 187, 187);
  border-collapse: collapse;
  border-spacing: 0px;
  margin: 0px 0px 1.286em;
  width: 85%;
  height: 100%;
}
#irregular-shape {
  width: 64%;
}
table.standard-table th {
  border: 1px solid rgb(187, 187, 187);
  padding: 0px 5px;
  background: none repeat scroll 0% 0% rgb(238, 238, 238);
  text-align: left;
  font-weight: bold;
}
table.standard-table td {
  padding: 5px;
  border: 1px solid rgb(204, 204, 204);
  text-align: left;
  vertical-align: top;
  width:25%;
  height:auto;
}
#img3, #img13 {
  width:100%;
  height:auto;
}

grayscale()

The grayscale() function converts the input image to grayscale. The value of amount defines the proportion of the conversion. A value of 100% is completely grayscale. A value of 0% leaves the input unchanged. Values between 0% and 100% are linear multipliers on the effect. The lacuna value for interpolation is 0.

filter: grayscale(100%)

<table class="standard-table">
  <thead>
    <tr>
      <th style="text-align: left;" scope="col">Original image</th>
      <th style="text-align: left;" scope="col">Live example</th>
      <th style="text-align: left;" scope="col">SVG Equivalent</th>
      <th style="text-align: left;" scope="col">Static example</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td><img alt="Test_Form_5.jpeg" id="img1" class="internal default" src="/files/3716/Test_Form_5.jpeg" style="width: 100%;" /></td>
      <td><img alt="Test_Form_5.jpg" id="img2" class="internal default" src="/files/3716/Test_Form_5.jpeg" style="width: 100%;" /></td>
      <td><div class="svg-container"><svg xmlns="http://www.w3.org/2000/svg" id="img3" viewbox="0 0 276 184" color-interpolation-filters="sRGB">
 <filter id="grayscale">
    <feColorMatrix type="matrix"
               values="0.2126 0.7152 0.0722 0 0
                       0.2126 0.7152 0.0722 0 0
                       0.2126 0.7152 0.0722 0 0
                       0 0 0 1 0"/>
  </filter>
  <image xlink:href="/files/3716/Test_Form_5.jpeg" filter="url(#grayscale)" width="276px" height="184px" />
</svg><div></td>
      <td><img alt="Test_Form_5_s.jpg" id="img4" class="internal default" src="/files/3717/Test_Form_5_s.jpg" style="width: 100%;" /></td>
    </tr>
  </tbody>
</table>

html {
  height:100%;
}
body {
  font: 14px/1.286 "Lucida Grande","Lucida Sans Unicode","DejaVu Sans",Lucida,Arial,Helvetica,sans-serif;
  color: rgb(51, 51, 51);
  height:100%;
  overflow:hidden;
}
#img2 {
  width:100%;
  height:auto;
  -moz-filter:grayscale(100%);
  -webkit-filter:grayscale(100%);
  -ms-filter:grayscale(100%);
  filter:grayscale(100%); }
table.standard-table {
  border: 1px solid rgb(187, 187, 187);
  border-collapse: collapse;
  border-spacing: 0px;
  margin: 0px 0px 1.286em;
  width: 85%;
  height: 100%;
}
table.standard-table th {
  border: 1px solid rgb(187, 187, 187);
  padding: 0px 5px;
  background: none repeat scroll 0% 0% rgb(238, 238, 238);
  text-align: left;
  font-weight: bold;
}
table.standard-table td {
  padding: 5px;
  border: 1px solid rgb(204, 204, 204);
  text-align: left;
  vertical-align: top;
  width:25%;
  height:auto;
}
#img3 {
  height:100%;
}

hue-rotate()

The hue-rotate() function applies a hue rotation on the input image. The value of angle defines the number of degrees around the color circle the input samples will be adjusted. A value of 0deg leaves the input unchanged. The lacuna value for interpolation is 0. Though there is no maximum value; the effect of values above 360deg wraps around.

filter: hue-rotate(90deg)

<table class="standard-table">
  <thead>
    <tr>
      <th style="text-align: left;" scope="col">Original image</th>
      <th style="text-align: left;" scope="col">Live example</th>
      <th style="text-align: left;" scope="col">SVG Equivalent</th>
      <th style="text-align: left;" scope="col">Static example</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td><img alt="Test_Form_6.jpeg" id="img1" class="internal default" src="/files/3718/Test_Form_6.jpeg" style="width: 100%;" /></td>
      <td><img alt="Test_Form_6.jpg" id="img2" class="internal default" src="/files/3718/Test_Form_6.jpeg" style="width: 100%;" /></td>
      <td><div class="svg-container"><svg xmlns="http://www.w3.org/2000/svg" id="img3" viewbox="0 0 266 190" color-interpolation-filters="sRGB">
 <filter id="hue-rotate">
    <feColorMatrix type="hueRotate"
               values="90"/>
  </filter>
  <image xlink:href="/files/3718/Test_Form_6.jpeg" filter="url(#hue-rotate)" width="266px" height="190px" />
</svg><div></td>
      <td><img alt="Test_Form_6_s.jpg" id="img4" class="internal default" src="/files/3719/Test_Form_6_s.jpg" style="width: 100%;" /></td>
    </tr>
  </tbody>
</table>

html {
  height:100%;
}
body {
  font: 14px/1.286 "Lucida Grande","Lucida Sans Unicode","DejaVu Sans",Lucida,Arial,Helvetica,sans-serif;
  color: rgb(51, 51, 51);
  height:100%;
  overflow:hidden;
}
#img2 {
  width:100%;
  height:auto;
  -moz-filter:hue-rotate(90deg);
  -webkit-filter:hue-rotate(90deg);
  -ms-filter:hue-rotate(90deg);
  filter:hue-rotate(90deg); }
table.standard-table {
  border: 1px solid rgb(187, 187, 187);
  border-collapse: collapse;
  border-spacing: 0px;
  margin: 0px 0px 1.286em;
  width: 85%;
  height: 100%;
}
table.standard-table th {
  border: 1px solid rgb(187, 187, 187);
  padding: 0px 5px;
  background: none repeat scroll 0% 0% rgb(238, 238, 238);
  text-align: left;
  font-weight: bold;
}
table.standard-table td {
  padding: 5px;
  border: 1px solid rgb(204, 204, 204);
  text-align: left;
  vertical-align: top;
  width:25%;
  height:auto;
}
#img3 {
  height:100%;
}

<svg style="position: absolute; top: -999999px" xmlns="http://www.w3.org/2000/svg">
  <filter id="svgHueRotate" >
    <feColorMatrix type="hueRotate" values="[angle]" />
  <filter />
</svg>

invert()

The invert() function inverts the samples in the input image. The value of amount defines the proportion of the conversion. A value of 100% is completely inverted. A value of 0% leaves the input unchanged. Values between 0% and 100% are linear multipliers on the effect. The lacuna value for interpolation is 0.

filter: invert(100%)

<table class="standard-table">
  <thead>
    <tr>
      <th style="text-align: left;" scope="col">Original image</th>
      <th style="text-align: left;" scope="col">Live example</th>
      <th style="text-align: left;" scope="col">SVG Equivalent</th>
      <th style="text-align: left;" scope="col">Static example</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td><img alt="Test_Form_7.jpeg" id="img1" class="internal default" src="/files/3720/Test_Form_7.jpeg" style="width: 100%;" /></td>
      <td><img alt="Test_Form_7.jpg" id="img2" class="internal default" src="/files/3720/Test_Form_7.jpeg" style="width: 100%;" /></td>
      <td><div class="svg-container"><svg xmlns="http://www.w3.org/2000/svg" id="img3" viewbox="0 0 183 276" color-interpolation-filters="sRGB">
 <filter id="invert">
    <feComponentTransfer>
        <feFuncR type="table" tableValues="1 0"/>
        <feFuncG type="table" tableValues="1 0"/>
        <feFuncB type="table" tableValues="1 0"/>
    </feComponentTransfer>
 </filter>
 <image xlink:href="/files/3720/Test_Form_7.jpeg" filter="url(#invert)" width="183px" height="276px" />
</svg><div></td>
      <td><img alt="Test_Form_7_s.jpg" id="img4" class="internal default" src="/files/3721/Test_Form_7_s.jpg" style="width: 100%;" /></td>
    </tr>
  </tbody>
</table>

html {
  height:100%;
}
body {
  font: 14px/1.286 "Lucida Grande","Lucida Sans Unicode","DejaVu Sans",Lucida,Arial,Helvetica,sans-serif;
  color: rgb(51, 51, 51);
  height:100%;
  overflow:hidden;
}
#img2 {
  width:100%;
  height:auto;
  -moz-filter: invert(100%);
  -webkit-filter: invert(100%);
  -ms-filter: invert(100%);
  filter: invert(100%); }
table.standard-table {
  border: 1px solid rgb(187, 187, 187);
  border-collapse: collapse;
  border-spacing: 0px;
  margin: 0px 0px 1.286em;
  width: 85%;
  height: 100%;
}
table.standard-table th {
  border: 1px solid rgb(187, 187, 187);
  padding: 0px 5px;
  background: none repeat scroll 0% 0% rgb(238, 238, 238);
  text-align: left;
  font-weight: bold;
}
table.standard-table td {
  padding: 5px;
  border: 1px solid rgb(204, 204, 204);
  text-align: left;
  vertical-align: top;
  width:25%;
  height:auto;
}
#img3 {
  height:100%;
}

opacity()

The opacity() function applies transparency to the samples in the input image. The value of amount defines the proportion of the conversion. A value of 0% is completely transparent. A value of 100% leaves the input unchanged. Values between 0% and 100% are linear multipliers on the effect. This is equivalent to multiplying the input image samples by amount. The lacuna value for interpolation is 1. This function is similar to the more established opacity property; the difference is that with filters, some browsers provide hardware acceleration for better performance.

filter: opacity(50%)

<table class="standard-table">
  <thead>
    <tr>
      <th style="text-align: left;" scope="col">Original image</th>
      <th style="text-align: left;" scope="col">Live example</th>
      <th style="text-align: left;" scope="col">SVG Equivalent</th>
      <th style="text-align: left;" scope="col">Static example</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td><img alt="Test_Form_14.jpeg" id="img1" class="internal default" src="/files/3725/Test_Form_14.jpeg" style="width: 100%;" /></td>
      <td><img alt="Test_Form_14.jpg" id="img2" class="internal default" src="/files/3725/Test_Form_14.jpeg" style="width: 100%;" /></td>
      <td><div class="svg-container"><svg xmlns="http://www.w3.org/2000/svg" id="img3" viewbox="0 0 276 183" color-interpolation-filters="sRGB">
 <filter id="opacity">
    <feComponentTransfer>
        <feFuncA type="table" tableValues="0 0.5">
    </feComponentTransfer>
 </filter>
 <image xlink:href="/files/3725/Test_Form_14.jpeg" filter="url(#opacity)" width="276px" height="183px" />
</svg><div></td>
      <td><img alt="Test_Form_14_s.jpg" id="img4" class="internal default" src="/files/3726/Test_Form_14_s.jpg" style="width: 100%;" /></td>
    </tr>
  </tbody>
</table>

html {
  height:100%;
}
body {
  font: 14px/1.286 "Lucida Grande","Lucida Sans Unicode","DejaVu Sans",Lucida,Arial,Helvetica,sans-serif;
  color: rgb(51, 51, 51);
  height:100%;
  overflow:hidden;
}
#img2 {
  width:100%;
  height:auto;
  -moz-filter: opacity(50%);
  -webkit-filter: opacity(50%);
  -ms-filter: opacity(50%);
  filter: opacity(50%); }
table.standard-table {
  border: 1px solid rgb(187, 187, 187);
  border-collapse: collapse;
  border-spacing: 0px;
  margin: 0px 0px 1.286em;
  width: 85%;
  height: 100%;
}
table.standard-table th {
  border: 1px solid rgb(187, 187, 187);
  padding: 0px 5px;
  background: none repeat scroll 0% 0% rgb(238, 238, 238);
  text-align: left;
  font-weight: bold;
}
table.standard-table td {
  padding: 5px;
  border: 1px solid rgb(204, 204, 204);
  text-align: left;
  vertical-align: top;
  width:25%;
  height:auto;
}
#img3 {
  height:100%;
}

saturate()

The saturate() function saturates the input image. The value of amount defines the proportion of the conversion. A value of 0% is completely un-saturated. A value of 100% leaves the input unchanged. Other values are linear multipliers on the effect. Values of amount over 100% are allowed, providing super-saturated results. The lacuna value for interpolation is 1.

filter: saturate(200%)

<table class="standard-table">
  <thead>
    <tr>
      <th style="text-align: left;" scope="col">Original image</th>
      <th style="text-align: left;" scope="col">Live example</th>
      <th style="text-align: left;" scope="col">SVG Equivalent</th>
      <th style="text-align: left;" scope="col">Static example</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td><img alt="Test_Form_9.jpeg" id="img1" class="internal default" src="/files/3722/Test_Form_9.jpeg" style="width: 100%;" /></td>
      <td><img alt="Test_Form_9.jpg" id="img2" class="internal default" src="/files/3722/Test_Form_9.jpeg" style="width: 100%;" /></td>
      <td><div class="svg-container"><svg xmlns="http://www.w3.org/2000/svg" id="img3" viewbox="0 0 201 239" color-interpolation-filters="sRGB">
 <filter id="saturate">
    <feColorMatrix type="saturate"
               values="2"/>
 </filter>
 <image xlink:href="/files/3722/Test_Form_9.jpeg" filter="url(#saturate)" width="201px" height="239px" />
</svg><div></td>
      <td><img alt="Test_Form_9_s.jpg" id="img4" class="internal default" src="/files/3724/Test_Form_9_s.jpeg" style="width: 100%;" /></td>
    </tr>
  </tbody>
</table>

html {
  height:100%;
}
body {
  font: 14px/1.286 "Lucida Grande","Lucida Sans Unicode","DejaVu Sans",Lucida,Arial,Helvetica,sans-serif;
  color: rgb(51, 51, 51);
  height:100%;
  overflow:hidden;
}
#img2 {
  width:100%;
  height:auto;
  -moz-filter: saturate(200%);
  -webkit-filter: saturate(200%);
  -ms-filter: saturate(200%);
  filter: saturate(200%); }
table.standard-table {
  border: 1px solid rgb(187, 187, 187);
  border-collapse: collapse;
  border-spacing: 0px;
  margin: 0px 0px 1.286em;
  width: 85%;
  height: 100%;
}
table.standard-table th {
  border: 1px solid rgb(187, 187, 187);
  padding: 0px 5px;
  background: none repeat scroll 0% 0% rgb(238, 238, 238);
  text-align: left;
  font-weight: bold;
}
table.standard-table td {
  padding: 5px;
  border: 1px solid rgb(204, 204, 204);
  text-align: left;
  vertical-align: top;
  width:25%;
  height:auto;
}
#img3 {
  height:100%;
}

sepia()

The sepia() function converts the input image to sepia. The value of amount defines the proportion of the conversion. A value of 100% is completely sepia. A value of 0% leaves the input unchanged. Values between 0% and 100% are linear multipliers on the effect. The lacuna value for interpolation is 0.

filter: sepia(100%)

<table class="standard-table">
  <thead>
    <tr>
      <th style="text-align: left;" scope="col">Original image</th>
      <th style="text-align: left;" scope="col">Live example</th>
      <th style="text-align: left;" scope="col">SVG Equivalent</th>
      <th style="text-align: left;" scope="col">Static example</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td><img alt="Test_Form_12.jpeg" id="img1" class="internal default" src="/files/3727/Test_Form_12.jpeg" style="width: 100%;" /></td>
      <td><img alt="Test_Form_12.jpg" id="img2" class="internal default" src="/files/3727/Test_Form_12.jpeg" style="width: 100%;" /></td>
      <td><div class="svg-container"><svg xmlns="http://www.w3.org/2000/svg" id="img3" viewbox="0 0 259 194" color-interpolation-filters="sRGB">
 <filter id="sepia">
    <feColorMatrix type="matrix"
               values="0.393 0.769 0.189 0 0
                       0.349 0.686 0.168 0 0
                       0.272 0.534 0.131 0 0
                       0 0 0 1 0"/>
 </filter>
 <image xlink:href="/files/3727/Test_Form_12.jpeg" filter="url(#sepia)" width="259px" height="194px" />
</svg><div></td>
      <td><img alt="Test_Form_12_s.jpg" id="img4" class="internal default" src="/files/3728/Test_Form_12_s.jpg" style="width: 100%;" /></td>
    </tr>
  </tbody>
</table>

html {
  height:100%;
}
body {
  font: 14px/1.286 "Lucida Grande","Lucida Sans Unicode","DejaVu Sans",Lucida,Arial,Helvetica,sans-serif;
  color: rgb(51, 51, 51);
  height:100%;
  overflow:hidden;
}
#img2 {
  width:100%;
  height:auto;
  -moz-filter: sepia(100%);
  -webkit-filter: sepia(100%);
  -ms-filter: sepia(100%);
  filter: sepia(100%); }
table.standard-table {
  border: 1px solid rgb(187, 187, 187);
  border-collapse: collapse;
  border-spacing: 0px;
  margin: 0px 0px 1.286em;
  width: 85%;
  height: 100%;
}
table.standard-table th {
  border: 1px solid rgb(187, 187, 187);
  padding: 0px 5px;
  background: none repeat scroll 0% 0% rgb(238, 238, 238);
  text-align: left;
  font-weight: bold;
}
table.standard-table td {
  padding: 5px;
  border: 1px solid rgb(204, 204, 204);
  text-align: left;
  vertical-align: top;
  width:25%;
  height:auto;
}
#img3 {
  height:100%;
}

Combining functions

You may combine any number of functions to manipulate the rendering. The following example enhances the contrast and brightness of the image:

filter: contrast(175%) brightness(103%)

<table class="standard-table">
  <thead>
    <tr>
      <th style="text-align: left;" scope="col">Original image</th>
      <th style="text-align: left;" scope="col">Live example</th>
      <th style="text-align: left;" scope="col">Static example</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td><img alt="Test_Form_8.jpeg" id="img1" class="internal default" src="/files/3729/Test_Form_8.jpeg" style="width: 100%;" /></td>
      <td><img alt="Test_Form_8.jpg" id="img2" class="internal default" src="/files/3729/Test_Form_8.jpeg" style="width: 100%;" /></td>
      <td><img alt="Test_Form_8_s.jpg" id="img4" class="internal default" src="/files/3730/Test_Form_8_s.jpeg" style="width: 100%;" /></td>
    </tr>
  </tbody>
</table>

html {
  height:100%;
}
body {
  font: 14px/1.286 "Lucida Grande","Lucida Sans Unicode","DejaVu Sans",Lucida,Arial,Helvetica,sans-serif;
  color: rgb(51, 51, 51);
  height:100%;
  overflow:hidden;
}
#img2 {
  width:100%;
  height:auto;
  -moz-filter: contrast(175%) brightness(103%);
  -webkit-filter: contrast(175%) brightness(103%);
  -ms-filter: contrast(175%) brightness(103%);
  filter: contrast(175%) brightness(103%);
}
table.standard-table {
  border: 1px solid rgb(187, 187, 187);
  border-collapse: collapse;
  border-spacing: 0px;
  margin: 0px 0px 1.286em;
  width: 85%;
  height: 100%;
}
table.standard-table th {
  border: 1px solid rgb(187, 187, 187);
  padding: 0px 5px;
  background: none repeat scroll 0% 0% rgb(238, 238, 238);
  text-align: left;
  font-weight: bold;
}
table.standard-table td {
  padding: 5px;
  border: 1px solid rgb(204, 204, 204);
  text-align: left;
  vertical-align: top;
  width:25%;
  height:auto;
}
#img3 {
  height:100%;
}

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

Applying filter functions

Examples of using the predefined functions are shown below. See each function for a specific example.

.mydiv {
  filter: grayscale(50%);
}

/* Gray all images by 50% and blur by 10px */
img {
  filter: grayscale(0.5) blur(10px);
}

Applying SVG filters

Examples of using the URL function with an SVG resource are as follows:

.target {
  filter: url(#c1);
}

.mydiv {
  filter: url(commonfilters.xml#large-blur);
}

Specifications

Specification	Status	Comment
Filter Effects Module Level 1 The definition of 'filter' in that specification.	Working Draft	Initial definition.

Browser compatibility

BCD tables only load in the browser

See also

• Applying SVG effects to HTML content
• The mask property
• SVG
• Understanding CSS filters, HTML5Rocks! article