AI file format

A practical definition of AI files, what they contain, and when to choose AI versus EPS or SVG.

What it is

An AI file is Adobe Illustrator's native vector format. It stores editable vector paths, typography, and layered design data.

Why it matters

AI is widely used by designers for source files because it preserves editability and advanced Illustrator features.

Common use cases

  • Master design source files
  • Brand identity and logo systems
  • Editable illustration archives

Quick comparison

AI is best for editing inside Illustrator; EPS and SVG are often used for broader compatibility.

Related terms

Related terms