To determine whether your raster images are a suitable resolution for a specific application, you need to check their pixel density. Whether you opt to flatten the layers of your file or choose to retain each one will determine the image type. However, depending how a PDF is originally created, it can be either a vector or a raster file. Your company logo and brand graphics should be created as a vector and saved as a master file so you can use it with smaller items such as your business card and letterhead, but also on larger surfaces, such as signage or billboards. Constructed using mathematical formulas rather than individual colored blocks, vector file types such as EPS, AI and PDF* are excellent for creating graphics that frequently require resizing. ![]() Vector images, alternatively, allow for more flexibility. Therefore, it is important that you save raster files at precisely the dimensions needed to eliminate possible complications. This is why altered photos may appear pixilated or low resolution. When stretched to fit a space they weren’t designed to fill, their pixels become visibly grainy and the image distorts. Almost all of the photos found on the web and in print catalogs are raster images.īecause raster images are constructed using a fixed number of colored pixels, they can’t be dramatically resized without compromising their resolution. JPEGs, and PNGs are common raster image types. Raster images use many colored pixels or individual building blocks to form a complete image. A vector fill is always the preferred file type but like most things it really depends on the design, ie is there small text, are there images, etc. ![]() When it comes to printing, the quality of your print file is the first most important piece of the puzzle.
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