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HTML SVG-Basics

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  • Difficulty Level : Medium
  • Last Updated : 10 Dec, 2021
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In this article, we will know HTML SVG Basics, & their implementation through the examples. SVG stands for Scalable Vector Graphics. It basically defines vector-based graphics in XML format. SVG graphics do NOT lose any quality if they are zoomed or resized. Every element and every attribute in SVG files can be animated.

Advantages of SVG: Advantages of using SVG over other image formats (like JPEG and GIF) are: 

  • SVG images can be created and edited with any text editor.
  • SVG images can be searched, indexed, scripted, and compressed.
  • SVG images are scalable.
  • SVG images can be printed with high quality at any resolution.

Differences between HTML SVG and HTML Canvas:

  • SVG is a language for describing 2D graphics in XML whereas Canvas draws 2D graphics, on the fly with JavaScript.
  • If attributes of an SVG object are changed, the browser can automatically re-render the shape whereas Canvas is rendered pixel by pixel. In canvas, once the graphic is drawn, it is forgotten by the browser.
  • SVG is resolution independent whereas CANVAS is resolution-dependent.
  • SVG supports event handlers whereas CANVAS doesn’t have support for event handlers.

Example 1: In this example, We create an SVG line in HTML.

HTML




<!DOCTYPE html>
<html>
 
<body>
  <h2>Welcome To GeeksforGeeks</h2>
  <svg height="250" width="600">
    <line x1="10" y1="10" x2="400" y2="400"
          style="stroke:rgb(0,0,255);stroke-width:3" />
  </svg>
</body>
 
</html>


Output:

SVG line Drawing

Example 2: Drawing A SVG Circle in HTML

HTML




<!DOCTYPE html>
<html>
 
<body>
  <!-- html svg tag is used here -->
  <svg width="200" height="200">
    <circle cx="80" cy="80" r="50" stroke="black"
            stroke-width="2" fill="grey" />
  </svg>
</body>
 
</html>


Output:

SVG Circle Drawing

Example 3: Drawing A SVG Rectangle in HTML

HTML




<DOCTYPE html>
  <html>
 
  <body>
    <!-- html svg tag is used here -->
    <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>
  </body>
 
  </html>


Output:

SVG Rectangle Drawing

Example 4: Drawing A SVG Rounded Rectangle in HTML

HTML




<!DOCTYPE html>
<html>
 
<body>
  <!-- html svg tag is used here -->
  <svg width="400" height="380">
    <rect x="80" y="20" rx="20"
          ry="20" width="150"
          height="150"
      style="fill: orange;
             stroke: black;
             stroke-width: 2;
             opacity: 0.5" />
  </svg>
</body>
 
</html>


Output:

SVG Rounded Rectangle Drawing

Example 5: Drawing A SVG Star in HTML 

HTML




<!DOCTYPE html>
<html>
 
<body>
  <!-- html svg tag is used here -->
  <svg width="300" height="200">
    <polygon points="100,10 40,198 190,78 10,78 160,198"
      style="fill: grey; stroke: orange;
             stroke-width: 5; fill-rule: evenodd" />
  </svg>
</body>
 
</html>


Output:

 SVG Star Drawing

Example 6: Drawing A Logo in HTML using SVG

HTML




<!DOCTYPE html>
<html>
 
<body>
   
  <!-- html svg tag is used here -->
  <svg height="300" width="700">
    <defs>
      <linearGradient id="grad1" x1="0%"
                      y1="0%" x2="100%"
                      y2="0%">
        <stop offset="0%"
              style="stop-color: white; stop-opacity: 1" />
        <stop offset="100%"
              style="stop-color: green; stop-opacity: 1" />
      </linearGradient>
    </defs>
    <ellipse cx="200" cy="100"
             rx="120" ry="80"
             fill="url(#grad1)" />
    <text fill="#ffffff" font-size="22"
          font-family="ARIAL"
          x="120" y="110">
      GeeksforGeeks
    </text>
  </svg>
</body>
 
</html>


Output:

GFG Logo using SVG

Supported Browsers: 

  • Google Chrome 4.0
  • Internet Explorer 9.0
  • Firefox 3.0
  • Opera 10.1
  • Safari 3.2

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