The file extension for a native Adobe Illustrator file is .ai. AI is short for Adobe Illustrator. (AI is also short for AI Artificial Intelligence)
Illustrator files shared between a desktop computer and an iPad are created in the AICAIC is short for Adobe Illustrator Cloud Document. Illustrator files saved to the cloud have the ext... More format, short for Illustrator CloudA cloud is a data storage server, accessed remotely from a computer workstation or mobile device. Cl... More Documents.