Even though you can get a great amount of detail from a vector file. Some images, such as photographs, call for a wider range of tones, shading and detail that go beyond vector files. These files are made up of tiny pixels that display a colour but are set at a certain size. When you zoom in on these files you will see pixels and jagged edges, but when viewed at the size they are meant to be viewed at they appear clear and crisp. These design files come in a variety of formats such as png, jpg, tiff, psd and gif formats to name a few.
The best way to get a raster file to appear crisp on a t-shirt design is to ensure that it is 300 pixels or dots per inch (dpi) at the size that you want it printed at. I.e if you have a chest print that is 250mm wide you need to make sure your design has 2953 pixels across.
Our online tshirt designer application will let you know if your uploaded design is the correct dpi by showing you a green quality bar. If the quality bar is yellow or red it will not be at 300dpi and therefore could be blurry or pixelated when printed.
