What is SVG?
SVG (Scalable Vector Graphics) is an XML-based vector image format that describes graphics using mathematical shapes rather than pixels, allowing infinite scaling without any loss of quality.
What is it?
SVG (Scalable Vector Graphics) is a W3C standard format introduced in 1999. Unlike raster formats like JPG and PNG that store images as a grid of pixels, SVG stores images as mathematical descriptions of shapes, paths, and colors using XML markup.
Because SVG uses mathematics rather than pixels, SVG images can be scaled to any size - from a favicon to a billboard - with zero quality loss. SVG files are also editable as text, can be styled with CSS, and can be animated with JavaScript.
Technical Specifications
Pros & Cons
Advantages
Looks sharp at any size from 16x16 pixels to poster-sized without any pixelation.
Simple graphics like logos and icons are often smaller than equivalent PNG files.
SVG elements can be styled, animated, and manipulated with code in the browser.
SVG supports text descriptions and semantic markup for accessibility.
Disadvantages
SVG cannot efficiently represent photographic images - use JPG or WebP instead.
Very detailed SVG illustrations with thousands of paths can hurt rendering performance.
SVG can contain scripts - untrusted SVG files should be sanitized before display.
Some print workflows require conversion to PDF or rasterization.
When to Use It
SVG is the ideal format for any graphic that needs to scale or be interactive on the web.
Logos and Branding
Company logos that appear in multiple sizes - from favicon to banner - stay crisp at every scale.
Icons
UI icons that need to work at 16px and 512px alike, with optional color theming via CSS.
Illustrations
Charts, diagrams, maps, and illustrations that need to be sharp on retina displays.
Animations
Lightweight animated graphics and transitions without video overhead.
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Can I use SVG on any website?
Yes. All modern browsers support SVG natively in HTML. You can embed SVG inline, as an img src, or as a CSS background image.
Is SVG better than PNG for logos?
Yes, for web use. SVG logos stay sharp at any size and are often smaller in file size. PNG is a raster format - a PNG logo may look blurry when scaled up.
Can SVG files be animated?
Yes. SVG supports animation through CSS animations, CSS transitions, and JavaScript (GSAP, anime.js). SMIL animation is also part of the SVG spec but less commonly used.
Is SVG safe to use from untrusted sources?
Be careful. SVG files can contain embedded scripts. Never display SVG from untrusted sources without sanitizing it first. Use a library like DOMPurify to sanitize user-uploaded SVGs.
What is the difference between SVG and EPS?
Both are vector formats. SVG is designed for the web (browser-native, CSS/JS compatible). EPS is designed for print and professional publishing. SVG is the modern choice for most use cases.