Vector image what is

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EPS or. AI or create a raster JPG with the exact dimensions desired and at dpi. JPGs can be optimized, when saving them out of photoshop, to find the perfect balance of small file size and high quality. On the web, you want your images files to be as small as they can be so your site loads quickly, but large enough to still appear crisp and not pixilated. For the general marketer, the main difference to understand between a PNG and JPG is that a PNG can have a transparent background and is generally larger and higher quality.

Therefore a PNG is ideal for saving logo files for websites because they can be placed over a colored background. The fewer colors and shades contained in an image, the smaller the file size. It has no loss in quality and therefore is primarily used for images used in printing. Because it is vector it can easily be resized to any size it needs to be.

An EPS file can be reopened and edited. So logos , flag designs, fonts, and stylistic artwork all lend themselves well to the vector format, while photographs and detailed images are more suited to raster files. If a designer creates an advertisement using vector files, and the resulting image is a vector image, the file can be blown up on a billboard with clean, crisp lines and text that looks great. If the same was attempted using raster files , it would look blurry and messy.

Not ideal for the design world. This is why designers prefer working with the source files - the original vector files - when dealing with logos and fonts. They can be edited, adapted, and scaled up without needing to worry about the quality of the final product.

They're more popular for general use. The concept behind raster images is fairly easy to understand, especially since you probably have some experience with pixels on a computer screen. Vector graphics aren't as intuitive, though. Vector images are made from "vector primitives," which are mathematically defined elements like points, lines and curves, as well as colors that fill in-between.

By combining primitives, you can draw sophisticated and complex images. We'll break down exactly what that means in a bit. The differences between vector and raster images is even apparent in the tools that professionals use to create and edit them.

Adobe Photoshop, for example, is a raster editing program that lets you change the color of pixels within the image. In other words, Photoshop is a sophisticated paint program, because everything the program does relies on manipulating the color of pixels. But Adobe Illustrator is a vector design program where there's no pixel-level color control. Instead, you work by drawing using a library of lines, points, and other shapes. These shapes aren't defined by the pixels on screen, but instead by a mathematical algorithm.

So rasters use pixels, and vectors use math. But what does that really mean for the user?