SVG (Scalable Vector Graphics) is a vector image format based on XML that describes two-dimensional graphics. Unlike raster formats, SVG images can be scaled to any size without losing quality, making them ideal for responsive web design.

Key features of SVG:

- Scalability: Infinite scaling without quality loss

- Small file sizes: Often smaller than equivalent raster images

- Editability: Can be edited with code or design software

- Animation: Supports CSS and JavaScript animations

- Accessibility: Can include text and semantic markup

SVG advantages:

- Resolution independent: Works at any size

- Web-friendly: Native browser support

- SEO-friendly: Can include text content

- Stylable: Can be styled with CSS

- Interactive: Can include JavaScript

Common uses:

- Icons and logos

- Illustrations

- Charts and graphs

- UI elements

- Animations

SVG is the preferred format for:

- Web icons

- Responsive graphics

- Print materials at various sizes

- Accessible graphics

- Interactive elements

SVG files are text-based, making them easy to optimize, edit, and integrate into web applications.