Occasionally, a low-res image will appear fine on a computer screen, but once printed, the pixelation surfaces. Some images are low-res from the start such as a blurry photo taken with a camera. Have you ever seen a photo printed and it looks blurry or pixelated? That pixelation is caused when a low-res image (often 72 or 150 dpi) is used and is stretched to fit a larger area than the original images can accommodate. High-res images are needed when printing and here’s why. However, since vector images are not made up of dots but rather lines, vector images are high resolution by nature. A high-res image is 300 dpi (dots per inch). With this basic information on how graphic images are created, we’ll move to high-resolution (high-res) versus low- resolution (low-res). So, if you anticipate that you may need to resize an image, ask for a vector image. Remember in geometry class how you learned about a line going on for infinity? This is where that lesson comes into practice. The powerful thing about vector images is that you can resize them from 1 inch by 1 inch to 1 mile by 1 mile without the loss of image quality because you’re technically extending the lines in the image. In contrast, a vector image is created using lines and curves. Raster images are great for use on the web. ![]() Raster images are made up of tiny dots of color that create the overall image. To start, it’s important to understand how graphics are created in order to know which graphic file format is best. In this post, we’ll explain those terms a bit and show examples of when a graphic file has been used incorrectly and how to correct it. To further complicate things, business leaders often can’t open the art files because they don’t have (and don’t need) the graphic design programs (such as Adobe Photoshop, Illustrator and InDesign) used to create the graphics. The answer? How your graphics will be used dictates whether you need a low-resolution or high-resolution image. ![]() Low resolution, high resolution, which graphic file do you need when? Which graphic file format is best? We are frequently asked just this.
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