Adobe Illustrator 1.0 / 1.1

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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

Identify it

Extensions	`.ai`
MIME types	`application/postscript`
Signatures	`252150532d41646f62652d322e3020455053462d312e320d252543726561746f723a41646f626520496c6c7573747261746f7228544d2920312e30` at byte 0 (Adobe Illustrator 1.x v1) `252150532d41646f62652d322e30` at byte 0 (Adobe Illustrator 1.x v2)
PRONOM	`x-fmt/20`
Wikidata	`Q27866092`
Apple UTI	`com.adobe.illustrator.ai-image`

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Open it

Listed for the family; check that the software handles this version.

ImageMagickOpen sourcereads and writes · ImageMagick License
Q141647662Open sourcereads and writes · Apache Software License 2.0 / MIT License
Wings 3DOpen sourcereads and writes · BSD licenses
ExifToolOpen sourcereads · Artistic License / GNU General Public License, version 1.0 or later
PhotoRecOpen sourcereads · GNU General Public License
Q8295Open sourcereads · GNU General Public License, version 2.0
sK1Open sourcereads · GNU Lesser General Public License
Adobe Illustratorreads and writes · proprietary license
Adobe Illustrator 9.0reads and writes
Autodesk 3DS Max 8reads and writes
Autodesk 3DS Max 9reads and writes
Cobaltreads and writes
Corel Flow 2.0reads and writes
Corel Painter version 12writes
Corel Painter X3writes
Freehand MXreads and writes
Lotus Freelance Graphicsreads and writes
Moment of Inspirationwrites
PaintShop Photo Pro X3reads and writes
PaintShop Pro X4reads and writes
Q108202177writes · proprietary license / shareware
Rhinoceros 3Dreads and writes · proprietary license
SOLIDWORKSreads and writes · proprietary license
The Print Shop Deluxe 2writes
Visio Standard 5.0reads and writes
VisualARQreads and writes
Acorn Image Editorreads
Adobe After Effectsreads · proprietary license
Adobe Fireworks CS6reads
Adobe FreeHandreads
Adobe PhotoDeluxereads
Adobe PhotoDeluxe 2.0reads
Adobe Premiere 5.1reads
Adobe Premiere 6.0reads
Adobe Premiere Proreads · proprietary license
Affinity Photoreads
Cinema 4Dreads · proprietary license
CorelDRAWreads · proprietary license
CorelDRAW Graphics Suitereads
DrawPlusreads

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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