What is AI?

Adobe Illustrator (AI) is a proprietary vector graphics format created by Adobe Systems for their industry-standard Illustrator software. AI files are based on PostScript and PDF standards, making them capable of storing complex vector illustrations, typography, and color information. The format is widely used in professional graphic design, logo creation, and print production.

Professional vector graphics format used by Adobe Illustrator

History

The evolution of AI format:

  • 1987: Adobe Illustrator 1.0 released for Macintosh
  • 1988: Version 88 introduced improved PostScript compatibility
  • 2000: Illustrator 9.0 switched to PDF-based format
  • 2005: Adobe Creative Suite integration enhanced
  • 2020: Cloud collaboration features added

Key Features

  • Vector Graphics: Resolution-independent scalable artwork
  • Layers: Complex layer organization and management
  • Live Effects: Non-destructive effects and filters
  • Typography: Advanced text and font handling
  • Color Management: Professional CMYK and spot color support
  • PDF Compatibility: Can be opened in PDF readers

Common Uses

  • Logo design and brand identity
  • Professional illustrations and artwork
  • Print design and pre-press production
  • Technical drawings and diagrams
  • Packaging and label design

Advantages

  • Industry standard for vector graphics
  • Infinite scalability without quality loss
  • Extensive professional tools and features
  • Integration with Adobe Creative Cloud
  • Print-ready with proper color management

Limitations

  • Requires Adobe Illustrator for full editing
  • Proprietary format with licensing costs
  • Large file sizes for complex artwork
  • Not ideal for web use without conversion
  • Learning curve for new users

Technical Information

AI files are based on PostScript and PDF standards, making them versatile for both screen display and print production.

Technical Specifications

File extension .ai
MIME type application/postscript
Format Base PostScript/PDF
Color Modes RGB, CMYK, Grayscale, Spot Colors
Artboards Multiple artboards per file
Layers Unlimited with sub-layers