Adobe Illustrator 15.0

Unknown

vector-image

The documents (files) created by Adobe Illustrator are PostScript language documents. A PostScript language document description that minimally conforms to the Document Structuring Conventions has two main parts: a prolog and a script. The prolog encapsulates information needed by other programs to interpret the file. The script describes the graphic elements on the page. Beginning with version 9, the Adobe Illustrated ai file format included both a pdf copy of the illustration and a postscript copy. Beginning with Adobe Illustrator 13.0. the PDF that Illustrator embeds in the file so that other apps can read the file is PDF 1.5.

Identify it

Extensions	`.ai.pdf`
MIME types	`application/postscript`
Signatures	`255044462d312e35` at byte 0 (Adobe Illustrator 15.0)
PRONOM	`fmt/564`
Wikidata	`Q47498745`
Apple UTI	`com.adobe.illustrator-image`

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Open it

ImageMagickOpen sourcereads and writes · ImageMagick License
Q141647662Open sourcereads and writes · Apache Software License 2.0 / MIT License
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Q8295Open sourcereads · GNU General Public License, version 2.0
sK1Open sourcereads · GNU Lesser General Public License
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And 15 more in the JSON record.

Convert it

To	With	Fidelity	Command and losses
Portable Network Graphics	ImageMagick	Lossless	`convert in.ai out.png` Pixels kept; some metadata, colour profiles or layers may be dropped.
Tagged Image File Format	ImageMagick	Lossless	`convert in.ai out.tif` Pixels kept; some metadata, colour profiles or layers may be dropped.
GIF 89a	ImageMagick	Lossy	`convert in.ai out.gif` Reduced to 256 colours.
JPEG File Interchange Format 1.02	ImageMagick	Lossy	`convert in.ai out.jpg` Lossy compression.
WebP	ImageMagick	Lossy	`convert in.ai out.webp` Lossy compression.

Sources

From PRONOM, Wikidata. Updated 2026-10-20.

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