What is a PDF?

PDF files are vector images that can contain text or images that don’t rely on a particular operating system or program to open, so they look the same no matter where they’re opened.
Summary: Vector files (PDF, AI) are made of lines that can be scaled to any size. If you want to use the logo in a very large format, like a poster, choose PDF. AI can only be opened in Adobe Illustrator. Raster files (JPEG, PNG) are made of pixels. These are typically best for use on websites and social media. They provide very sharp clean images but the quality can degrade over time with repeated saving and editing.