Using SVGs as Filters | SVG

SVG filters can be used to apply various visual effects to elements on a web page. This can be a powerful technique for creating unique and engaging designs.

Basic Syntax

CSS

filter: url(#my-filter);

Creating an SVG Filter

1. Create an SVG element: Define the <filter> element within your SVG.
2. Add filter effects: Use elements like <feGaussianBlur>, <feColorMatrix>, <feDropShadow>, etc., to create different effects.

Example:

HTML

<svg width=”0″ height=”0″>

  <filter id=”my-filter”>

    <feGaussianBlur in=”SourceGraphic” stdDeviation=”5″ />

  </filter>

</svg>

Applying the Filter

CSS

.element {

  filter: url(#my-filter);

}

Common SVG Filter Elements

• <feGaussianBlur>: Applies a Gaussian blur to the element.
• <feColorMatrix>: Applies a color matrix transformation to the element.
• <feDropShadow>: Creates a drop shadow effect.
• <feMorphology>: Applies morphological operations to the element (e.g., erode, dilate).
• <feOffset>: Offsets the input image.
• <feBlend>: Blends the input image with another image.

Responsive Considerations

• Use relative units: Use em or rem for filter parameters to create responsive effects.
• Combine with media queries: Adjust filter properties based on screen size.
• Consider performance: Excessive filters can impact performance, so use them judiciously.

Example:

CSS

@media only screen and (max-width: 600px) {

  .element {

    filter: url(#my-filter) blur(10px);

  }

} By using SVG filters, you can create a wide range of visual effects for your web designs. Experiment with different filter elements and combinations to achieve the desired results.