8/25/2023 0 Comments Raster file types 101Read this for more about image sizes for Squarespace Website photographs (want gorgeous pictures for your webiste like mine? Check out Moyo studio *, they have gorgeous images and currently have their creatives bundle at a huge discount! *yes - that’s an affiliate link, I’m their biggest fan! To avoid this ensure you use a minimum of 72 ppi (pixels per inch) for web, and 300ppi for print. Because they are a raster file type, however, they will lose quality (or become pixelated) if enlarged too much, even on web. JPEG files are great to use electronically for images with a solid background, such as photographs or social media graphics. This compression has the downside of meaning that the image will be lower quality than the original (such as a PSD (photoshop), or RAW file) and so is not the best to use for large scale printing like signage as it is likely to become pixelated. It’s also a “lossy” file which means that only the necessary information is saved, and the rest is discarded which allows the file size to be relatively small (also known as being “compressed”). ![]() It’s a type of raster file meaning that it’s composed of pixels. Now we have the basics out of the way, (and you’re humming “No Woman No Cry”) I’m going to explain in some more detail the most commonly used file types for images, including logos, icons and photos and some of the key things to consider when choosing which image type is right for what you’re seeking to do.Ī JPEG is the most universally used file type - originally developed for digital photographs. How they appear can vary dramatically depending on the application that is viewing them They don’t capture fine detail such as that in photographs which contain gradients and texture take up less memory space compared to the equivalent raster file The fact that they are made from mathematical formulae can mean they are “lighter” i.e. They maintain fantastic quality and detail when used for “flat” or line images or text They can often be easily converted into other file types to be used in different contexts They can be resized as large as you like or as small as you like without losing quality These are images created using proportional formulae as opposed to pixels, and therefore are more reliable if resized. ![]() Lossy raster files (more on this later) can be compressed to be relatively smallĪlmost any programme can work with commonly used raster file typesīecome grainy, pixelated or blurry when enlarged too muchĮnlarging them to maintain quality can result in very large file sizesĪ vector file type or file format is a file that is stored as mathematical equations. Show fine detail, colour gradients and texture well ![]() ![]() we see the individual pixels that make up the image - I’m sure you’ve been there ! What are the benefits of raster files? Raster files can display colour gradients and fine detail such as in photographs (which are almost always PNG or JPeg file types), however if they are enlarged too much they can become “pixelated” i.e. A pixel is a small block of colour that when many of them are all viewed together create an image. Nothing to do with Bob Marley… (forgive me the Dad joke - I couldn’t resist!) A Raster file type or file format is the word we use for file that is created out of pixels.
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