You can use CSS filters to add special effects to text, images and other aspects of a webpage without using images or other graphics. Filters only work on Internet Explorer 4.0. If you are developing your site for multiple browsers, then it may not be a good idea to use CSS filters because there is a possibility that it would not give any advantage.
In this chapter, we will see the details of each CSS filter. These filters may not work in your browser.
Alpha Channel
The Alpha Channel filter alters the opacity of the object, which makes it blend into the background. The following parameters can be used in this filter −
| Sr.No. | Parameter & Description |
|---|---|
| 1 | opacityLevel of the opacity. 0 is fully transparent, 100 is fully opaque. |
| 2 | finishopacityLevel of the opacity at the other end of the object. |
| 3 | styleThe shape of the opacity gradient.0 = uniform1 = linear2 = radial3 = rectangular |
| 4 | startXX coordinate for opacity gradient to begin. |
| 5 | startYY coordinate for opacity gradient to begin. |
| 6 | finishXX coordinate for opacity gradient to end. |
| 7 | finishYY coordinate for opacity gradient to end. |
<html>
<head>
</head>
<body>
<p>Image Example:</p>
<img src = "/css/images/logo.png" alt = "CSS Logo"
style = "Filter: Alpha(Opacity=100,
FinishOpacity = 0,
Style = 2,
StartX = 20,
StartY = 40,
FinishX = 0,
FinishY = 0)" />
<p>Text Example:</p>
<div style = "width: 357;
height: 50;
font-size: 30pt;
font-family: Arial Black;
color: blue;
Filter: Alpha(Opacity=100, FinishOpacity=0, Style=1, StartX=0, StartY=0, FinishX=580, FinishY=0)">CSS Tutorials</div>
</body>
</html>
Motion Blur
Motion Blur is used to create blurred pictures or text with the direction and strength. The following parameters can be used in this filter −
| Sr.No. | Parameter & Description |
|---|---|
| 1 | addTrue or false. If true, the image is added to the blurred image; and if false, the image is not added to the blurred image. |
| 2 | directionThe direction of the blur, going clockwise, rounded to 45-degree increments. The default value is 270 (left).0 = Top45 = Top right90 = Right135 = Bottom right180 = Bottom225 = Bottom left270 = Left315 = Top left |
| 3 | strengthThe number of pixels the blur will extend. The default is 5 pixels. |
Example
<html>
<head>
</head>
<body>
<p>Image Example:</p>
<img src = "/css/images/logo.png" alt = "CSS Logo"
style = "Filter: Blur(Add = 0, Direction = 225, Strength = 10)">
<p>Text Example:</p>
<div style = "width: 357;
height: 50;
font-size: 30pt;
font-family: Arial Black;
color: blue;
Filter: Blur(Add = 1, Direction = 225, Strength = 10)">CSS Tutorials
</div>
</body>
</html>
Chroma Filter
Chroma Filter is used to make any particular color transparent and usually it is used with images. You can use it with scrollbars also. The following parameter can be used in this filter −
| Sr.No. | Parameter & Description |
|---|---|
| 1 | colorThe color that you’d like to be transparent. |
Example
<html>
<head>
</head>
<body>
<p>Image Example:</p>
<img src = "/images/css.gif"
alt = "CSS Logo" style = "Filter: Chroma(Color = #FFFFFF)">
<p>Text Example:</p>
<div style = "width: 580;
height: 50;
font-size: 30pt;
font-family: Arial Black;
color: #3300FF;
Filter: Chroma(Color = #3300FF)">CSS Tutorials</div>
</body>
</html>
Drop Shadow Effect
Drop Shadow is used to create a shadow of your object at the specified X (horizontal) and Y (vertical) offset and color.
The following parameters can be used in this filter −
| Sr.No. | Parameter & Description |
|---|---|
| 1 | colorThe color, in #RRGGBB format, of the dropshadow. |
| 2 | offXNumber of pixels the drop shadow is offset from the visual object, along the x-axis. Positive integers move the drop shadow to the right, negative integers move the drop shadow to the left. |
| 3 | offYNumber of pixels the drop shadow is offset from the visual object, along the y-axis. Positive integers move the drop shadow down, negative integers move the drop shadow up. |
| 4 | positiveIf true, all opaque pixels of the object have a dropshadow. If false, all transparent pixels have a dropshadow. The default is true. |
Example
<html>
<head>
</head>
<body>
<p>Image Example:</p>
<img src = "/css/images/logo.png"
alt = "CSS Logo"
style = "filter:drop-shadow(2px 2px 1px #FF0000);">
<p>Text Example:</p>
<div style = "width: 357;
height: 50;
font-size: 30pt;
font-family: Arial Black;
color: red;
filter:drop-shadow(3px 3px 2px #000000);">CSS Tutorials</div>
</body>
</html>
Flip Effect
Flip effect is used to create a mirror image of the object. The following parameters can be used in this filter −
| Sr.No. | Parameter & Description |
|---|---|
| 1 | FlipHCreates a horizontal mirror image |
| 2 | FlipVCreates a vertical mirror image |
Example
<html>
<head>
</head>
<body>
<p>Image Example:</p>
<img src = "/css/images/logo.png"
alt = "CSS Logo"
style = "filter: FlipH">
<img src = "/css/images/logo.png" alt = "CSS Logo" style = "filter: FlipV">
<p>Text Example:</p>
<div style = "width: 300;
height: 50;
font-size: 30pt;
font-family: Arial Black;
color: red;
filter: FlipV">CSS Tutorials</div>
</body>
</html>
Glow Effect
Glow effect is used to create a glow around the object. If it is a transparent image, then glow is created around the opaque pixels of it. The following parameters can be used in this filter −
| Sr.No. | Parameter & Description |
|---|---|
| 1 | colorThe color you want the glow to be. |
| 2 | strengthThe intensity of the glow (from 1 to 255). |
Example
<html>
<head>
</head>
<body>
<p>Image Example:</p>
<img src = "/css/images/logo.png"
alt = "CSS Logo"
style = "filter: Chroma(Color = #000000) Glow(Color=#00FF00, Strength=20)">
<p>Text Example:</p>
<div style = "width: 357;
height: 50;
font-size: 30pt;
font-family: Arial Black;
color: red;
filter: Glow(Color=#00FF00, Strength=20)">CSS Tutorials</div>
</body>
</html>
Grayscale Effect
Grayscale effect is used to convert the colors of the object to 256 shades of gray. The following parameter is used in this filter −
| Sr.No. | Parameter & Description |
|---|---|
| 1 | grayscaleConverts the colors of the object to 256 shades of gray. |
Example
<html>
<head>
</head>
<body>
<p>Image Example:</p>
<img src = "/css/images/logo.png"
alt = "CSS Logo"
style = "filter: grayscale(50%)">
<p>Text Example:</p>
<div style = "width: 357;
height: 50;
font-size: 30pt;
font-family: Arial Black;
color: red;
filter: grayscale(50%)">CSS Tutorials</div>
</body>
</html>
Invert Effect
Invert effect is used to map the colors of the object to their opposite values in the color spectrum, i.e., to create a negative image. The following parameter is used in this filter −
| Sr.No. | Parameter & Description |
|---|---|
| 1 | InvertMaps the colors of the object to their opposite value in the color spectrum. |
Example
<html>
<head>
</head>
<body>
<p>Image Example:</p>
<img src = "/css/images/logo.png"
alt = "CSS Logo"
style = "filter: invert(100%)">
<p>Text Example:</p>
<div style = "width: 357;
height: 50;
font-size: 30pt;
font-family: Arial Black;
color: red;
filter: invert(100%)">CSS Tutorials</div>
</body>
</html>
Mask Effect
Mask effect is used to turn transparent pixels to a specified color and makes opaque pixels transparent. The following parameter is used in this filter −
| Sr.No. | Parameter & Description |
|---|---|
| 1 | colorThe color that the transparent areas will become. |
Example
<html>
<head>
</head>
<body>
<p>Image Example:</p>
<img src = "/css/images/logo.png"
alt = "CSS Logo"
style = "filter: Chroma(Color = #000000) Mask(Color=#00FF00)">
<p>Text Example:</p>
<div style = "width: 357;
height: 50;
font-size: 30pt;
font-family: Arial Black;
color: red;
filter: Mask(Color=#00FF00)">CSS Tutorials
</div>
</body>
</html>
Shadow Filter
Shadow filter is used to create an attenuated shadow in the direction and color specified. This is a filter that lies in between Dropshadow and Glow. The following parameters can be used in this filter −
| Sr.No. | Parameter & Description |
|---|---|
| 1 | colorThe color that you want the shadow to be. |
| 2 | directionThe direction of the blur, going clockwise, rounded to 45-degree increments. The default value is 270 (left).0 = Top45 = Top right90 = Right135 = Bottom right180 = Bottom225 = Bottom left270 = Left315 = Top left |
Example
<html>
<head>
</head>
<body>
<p>Image Example:</p>
<img src = "/css/images/logo.png"
alt = "CSS Logo"
style = "filter: Chroma(Color = #000000) Shadow(Color=#00FF00, Direction=225)">
<p>Text Example:</p>
<div style = "width: 357;
height: 50;
font-size: 30pt;
font-family:
Arial Black;
color: red;
filter: Shadow(Color=#0000FF, Direction=225)">CSS Tutorials
</div>
</body>
</html>
Wave Effect
Wave effect is used to give the object a sine wave distortion to make it look wavy. The following parameters can be used in this filter −
| Sr.No. | Parameter & Description |
|---|---|
| 1 | addA value of 1 adds the original image to the waved image, 0 does not. |
| 2 | freqThe number of waves. |
| 3 | lightThe strength of the light on the wave (from 0 to 100). |
| 4 | phaseAt what degree the sine wave should start (from 0 to 100). |
| 5 | strengthThe intensity of the wave effect. |
Example
<html>
<head>
</head>
<body>
<p>Image Example:</p>
<img src = "/css/images/logo.png"
alt = "CSS Logo"
style = "filter: Chroma(Color = #000000)
Wave(Add=0, Freq=1, LightStrength=10, Phase=220, Strength=10)">
<p>Text Example:</p>
<div style = "width: 357;
height: 50;
font-size: 30pt;
font-family: Arial Black;
color: red;
filter: Wave(Add=0, Freq=1, LightStrength=10, Phase=20, Strength=20)">CSS Tutorials
</div>
</body>
</html>
X-Ray Effect
X-Ray effect grayscales and flattens the color depth. The following parameter is used in this filter:
| Sr.No. | Parameter & Description |
|---|---|
| 1 | xrayGrayscales and flattens the color depth. |
Example
<html>
<head>
</head>
<body>
<p>Image Example:</p>
<img src = "/css/images/logo.png"
alt = "CSS Logo"
style = "filter: Xray">
<p>Text Example:</p>
<div style = "width: 357;
height: 50;
font-size: 30pt;
font-family: Arial Black;
color: red;
filter: Xray">CSS Tutorials
</div>
</body>
</html>
