HTML SVG Graphics

Guest · Post by **Guest** » Fri Oct 27, 2023 8:06 am

HTML SVG Graphics

SVG defines vector-based graphics in XML format.

What is SVG?

SVG stands for Scalable Vector Graphics
SVG is used to define graphics for the Web
SVG is a W3C recommendation

The HTML <svg> Element
The HTML <svg> element is a container for SVG graphics.
SVG has several methods for drawing paths, boxes, circles, text, and graphic images.

Browser Support
The numbers in the table specify the first browser version that fully supports the
<svg> element.

Element

<svg>
4.0
9.0
3.0
3.2
10.1

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>
Try it Yourself »

SVG Rectangle

Example

<svg width="400" height="100"> <rect width="400" height="100" style="fill:rgb(0,0,255);stroke-width:10;stroke:rgb(0,0,0)"
/></svg>
Try it Yourself »

SVG Rounded Rectangle

Sorry, your browser does not support inline SVG.

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>
Try it Yourself »

SVG Star

Sorry, your browser does not support inline SVG.

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>

Try it Yourself »

SVG Logo

SVG
Sorry, your browser does not support inline SVG.

Example

<svg height="130" width="500"> <defs>    <linearGradient id="grad1" x1="0%"
y1="0%" x2="100%" y2="0%">      <stop offset="0%" style="stop-color:rgb(255,255,0);stop-opacity:1"
/>      <stop offset="100%" style="stop-color:rgb(255,0,0);stop-opacity:1" />

</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>

Try it Yourself »

Differences Between SVG and Canvas
SVG is a language for describing 2D graphics in XML.
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 for an element.
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 Canvas and SVG
The table below shows some important differences between Canvas and SVG:

Canvas
SVG

Resolution dependent
No support for event handlers
Poor text rendering capabilities
You can save the resulting image as .png or .jpg
Well suited for graphic-intensive games

Resolution independent
Support for event handlers
Best suited for applications with large rendering areas (Google Maps)
Slow rendering if complex (anything that uses the DOM a lot will be slow)
Not suited for game applications

SVG Tutorial
To learn more about SVG, please read our SVG Tutorial.

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Reference: https://www.w3schools.com/html/html5_svg.asp