Pixels have a defined proportion based on their resolution (high or low), and when the pixels are stretched to fill space they were not originally intended to fit, they become distorted, resulting in blurry or unclear images. Every photo you find online or in print is a raster image. JPEG, GIF, and PNG are all raster image extensions. Raster images are constructed by a series of pixels, or individual blocks, to form an image. We've put together a useful outline to help you understand the difference between each file format, and when they are appropriate to use.įirst things first: What is the difference between vector and raster? Raster Image Files While the large variety of image formats may seem overwhelming, there is a method to the madness. Unless you're a graphic designer by training (like me), chances are you've never needed to understand things like what separates a TIF from a PDF or a PSD. Have you ever wondered when you should use a JPG instead of a PNG? Or maybe you're just trying to figure out which program opens an INDD.
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