SVG – Scalable Vector Graphics
SVG – Scalable Vector Graphics
<!DOCTYPE html>
<html>
<body>
<h1>My first SVG</h1>
<svg width=”100″ height=”100″>
<circle cx=”50″ cy=”50″ r=”40″ stroke=”green” stroke-width=”4″ fill=”yellow” />
Sorry, your browser does not support inline SVG.
</svg>
</body>
</html>
Output:
SVG stands for Scalable Vector Graphics.
SVG defines vector-based graphics in XML format.
What is SVG?
- SVG stands for Scalable Vector Graphics
- SVG is used to define vector-based graphics for the Web
- SVG defines the graphics in XML format
- Every element and every attribute in SVG files can be animated
- SVG is a W3C recommendation
- SVG integrates with other W3C standards such as the DOM and XSL
SVG Advantages
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
- SVG images are zoomable
- SVG graphics do NOT lose any quality if they are zoomed or resized
- SVG is an open standard
- SVG files are pure XML
Embed SVG Directly Into HTML Pages
SVG Code explanation:
- An SVG image begins with an <svg> element
- The width and height attributes of the <svg> element define the width and height of the SVG image
- The <circle> element is used to draw a circle
- The cx and cy attributes define the x and y coordinates of the center of the circle. If cx and cy are not set, the circle’s center is set to (0, 0)
- The r attribute defines the radius of the circle
- The stroke and stroke-width attributes control how the outline of a shape appears. We set the outline of the circle to a 4px green “border”
- The fill attribute refers to the color inside the circle. We set the fill color to yellow
- The closing </svg> tag closes the SVG image
Note: Since SVG is written in XML, all elements must be properly closed!
SVG Shapes
SVG has some predefined shape elements that can be used by developers:
- Rectangle <rect>
- Circle <circle>
- Ellipse <ellipse>
- Line <line>
- Polyline <polyline>
- Polygon <polygon>
- Path <path>
SVG Rectangle – <rect>
Example 1
Sorry, your browser does not support inline SVG.
The <rect> element is used to create a rectangle and variations of a rectangle shape:
Here is the SVG code:
Example
<svg width=”400″ height=”110″>
<rect width=”300″ height=”100″ style=”fill:rgb(0,0,255);stroke-width:3;stroke:rgb(0,0,0)” />
</svg>Code explanation:
- The width and height attributes of the <rect> element define the height and the width of the rectangle
- The style attribute is used to define CSS properties for the rectangle
- The CSS fill property defines the fill color of the rectangle
- The CSS stroke-width property defines the width of the border of the rectangle
- The CSS stroke property defines the color of the border of the rectangle
Example 2
<!DOCTYPE html>
<html>
<body>
<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″ />
Sorry, your browser does not support inline SVG.
</svg>
</body>
</html>
Code explanation:
- The rx and the ry attributes rounds the corners of the rectangle
Example 3
<!DOCTYPE html>
<html>
<body>
<svg width=”400″ height=”180″>
<rect x=”50″ y=”20″ width=”150″ height=”150″ style=”fill:blue;stroke:pink;stroke-width:5;opacity:0.5″ />
Sorry, your browser does not support inline SVG.
</svg>
</body>
</html>