Unlike raster images (PNG, JPG) which are made of pixels, SVGs are defined by mathematical vectors. This means they look crisp on any screen size, zoom level, or pixel density (Retina displays). You never need to serve multiple versions (@1x, @2x, @3x).

For icons and simple illustrations, SVGs are often significantly smaller in file size than their raster counterparts. When inlined (like with this library), you save an HTTP request entirely, speeding up page loads.

SVGs are just code (XML). You can manipulate them with CSS and JavaScript just like any other HTML element. Change fill colors on hover, animate strokes, or morph shapes dynamically—things impossible with a PNG.

SVGs contain semantic markup. You can add <title> and <desc> tags internally, making them readable by screen readers and indexable by search engines.