SVG (Scalable Vector Graphics)
SVG defines vector-based graphics in XML, which can be directly embedded in HTML pages.
SVG graphics are scalable, and do not lose any quality if they are zoomed or resized:
SVG is supported by all major browsers.
What is SVG?
- SVG stands for Scalable Vector Graphics
- SVG is used to define vector-based graphics for the Web
- SVG defines graphics in XML format
- Each element and attribute in SVG files can be animated
- SVG is a W3C recommendation
- SVG integrates with other standards, such as CSS, DOM, XSL and JavaScript
The <svg> Element
The HTML <svg> element is a container for SVG graphics.
SVG has several methods for drawing paths, rectangles, circles, polygons, text, and much more.
SVG Circle
Example
<!DOCTYPE html>
<html>
<body>
<svg width="100" height="100">
<circle cx="50" cy="50" r="40" stroke="green" stroke-width="4" fill="yellow" />
</svg>
</body>
</html>
SVG Rectangle
Example
<svg width="400" height="120">
<rect x="10" y="10" width="200" height="100" stroke="red" stroke-width="6" fill="blue" />
</svg>
SVG Rectangle with Opacity and Rounded Corners
Example
<svg width="400" height="180">
<rect x="50" y="20" rx="20" ry="20" width="150" height="150"
style="fill:red;stroke:black;stroke-width:5;opacity:0.5" />
</svg>
SVG Star
Example
<svg width="300" height="200">
<polygon points="100,10 40,198 190,78 10,78 160,198"
style="fill:lime;stroke:purple;stroke-width:5;fill-rule:evenodd;" />
</svg>
SVG Gradient Ellipse and Text
Example
<svg height="130" width="500">
<defs>
<linearGradient id="grad1">
<stop offset="0%" stop-color="yellow" />
<stop offset="100%" stop-color="red" />
</linearGradient>
</defs>
<ellipse cx="100" cy="70" rx="85" ry="55" fill="url(#grad1)" />
<text fill="#ffffff" font-size="45" font-family="Verdana" x="50" y="86">SVG</text>
Sorry, your browser does not support inline SVG.
</svg>
Differences Between SVG and Canvas
SVG is a language for describing 2D graphics in XML, while Canvas draws 2D graphics, on the fly (with JavaScript).
SVG is XML based, which means that every element is available within the SVG DOM. You can attach JavaScript event handlers to SVG graphics.
In SVG, each drawn shape is remembered as an object. If attributes of an SVG object are changed, the browser can automatically re-render the shape.
Canvas is rendered pixel by pixel. In canvas, once the graphic is drawn, it is forgotten by the browser. If its position should be changed, the entire scene needs to be redrawn, including any objects that might have been covered by the graphic.
Comparison of SVG and Canvas
The table below shows some important differences between Canvas and SVG:
| SVG | Canvas |
|---|---|
|
|
SVG Tutorial
To learn more about SVG, please read our SVG Tutorial.
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