That’s quite a complex explanation, but in short, Vector graphics use mathematics allowing them to be scaled large or small without losing quality. There are several Vector graphic file formats, but the ones most commonly used for logo design are:
- EPS (Encapsulated PostScript): Adobe’s EPS format is the most widely used Vector graphic format. It is the standard interchange format for the print industry, and is a well supported export format from Vector graphics software. Brands should always have their logos in EPS format.
- AI (Adobe Illustrator Artwork): Adobe Illustrator’s native format is AI which is a modified version of the EPS format. The AI format is fairly common, but is less universal than the EPS format. If you have an AI version of your logo, make sure to also have a version in EPS format to cover your bases.
- SVG (Scalable Vector Graphic): SVG is the W3C Vector graphic standard. SVG is gaining in popularity as modern browsers increase their support of the format. SVG is becoming increasingly important as the various screen resolutions that websites need to support continues to broaden. Leveraging SVG, designers can support just about any screen resolution without worrying about quality degradation. For additional information on SVG, head on over to the official SVG website
To be on the safe side, brands should always keep an EPS version of their logo readily available. EPS is the most widely accepted and supported Vector graphic format for brands.