Adobe Illustrator Artwork (AI) is a proprietary file format developed by Adobe Systems for representing single-page vector-based drawings in either the EPS or PDF formats. The. ai filename extension is used by Adobe Illustrator.\n\nAnswer this question based on the passage: what is the file extension for adobe illustrator? Let's give stream of consciousness first:
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The relevant information is: The. ai filename extension is used by Adobe Illustrator.
So, the final answer is . ai.
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