Graphic image files can come in many formats. However, for print or digital purposes, a logo needs to be created in a format that allows it to be resized without losing quality.
Logo designers generally accomplish this by creating EPS, or encapsulated post script files, using software like Adobe Illustrator or Corel Draw which allows the designer to create vector-based files. EPS files can only be opened using software that works within the vector-based constraints. Sometimes files created in these vector programs can be saved as PDFs or .ai files as well.
What’s so special about vector-based graphic files?
Simply put, they’re small, scalable and editable images. In absolute terms, a vector graphics file is your logo, broken down into a series of geometric shapes, consisting of outlines that are curved and joined at coordinates/points. These coordinates and shape outlines are stored as mathematical equations, creating small and portable file sizes that are infinitely editable.
Why don’t pixel-based formats work?
File types like JPG, PNG, and GIF are pixel-based file formats. Pixel-based formats cannot be scaled. If you attempt to enlarge a pixel-based image, it will pixelate (bottom logo above), in other words, the actual pixels that make up the image will become visible. In practical terms, this will lead to your logo appearing blurry, dirty or fuzzy.
For a web/graphic designer to manipulate your logo into the correct size and quality on a project, it is necessary for you to give them a vector-based (top logo above) (typically an EPS) version of your logo.If you are unsure how to get a vector-based version, try contacting your logo designer or your printer as they should have these on file.