In the code above, tags are shown in pink within angle brackets. That’s because XML does most of the work for us with tags. We only need one line of code to draw a circle. When I open the file for this circle in a text editor, this XML code appears:Īs you can see, there’s not much code here. I’ll start by drawing a simple circle SVG: The XML code in an SVG file specifies all of the shapes, colors, and text that comprise the image. SVG files are written in XML, a markup language used for storing and transferring digital information. Vector graphic files also store color information and can even display text. Mathematical formulas dictate the placement and shape of these points and lines, and maintain their spatial relationships when the image is scaled up or down. These formats store images as a set of points and lines between points. Vector-graphic formats - like SVG and PDF - work differently. Raster images have a fixed resolution, so increasing their size lowers the quality of the image. Raster graphics work well for highly detailed images like photographs, in which the exact color of each pixel needs to be specified. The squares in this bitmap combine to form a coherent image, much like pixels on a computer screen. ![]() These are raster-graphics formats, which means that they store image information in a grid of colored squares, also called a bitmap. You’re probably familiar with the common formats PNG and JPEG. There are more than a few image file formats in use on the web today, which we can divide into two categories: raster graphics and vector graphics. ![]() ![]() This prompts the question: What exactly is a vector graphic? Raster vs. Unlike other popular image file formats, the SVG format stores images as vectors, which is a type of graphic made up of points, lines, curves and shapes based on mathematical formulas. ![]() An SVG file, short for scalable vector graphic file, is a standard graphics file type used for rendering two-dimensional images on the internet.Īn SVG file, short for scalable vector graphic file, is a standard graphics file type used for rendering two-dimensional images on the internet.
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