You’ll also notice that this XML file is written in English. All modern browsers render SVGs this way, as can specialized graphics editing software. When provided with an SVG file like this one, a web browser (or other application) takes in this XML info, processes it, and displays it onscreen as a vector image. #f4795b is the hexadecimal color code for this particular shade of orange. To draw the circle, the XML code specifies the shape with a tag, its position with the and with the cx and cy attributes, the radius with the r attribute, and the color inside the tag. 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 the shapes, colors, and text that make up 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, where each pixel has a specified and exact color. 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. Scalable vector graphic files are a web-friendly format that stores images as vectors. An 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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