Formato file

Informazioni sui file AI

AI (Adobe Illustrator · Formato immagine)

Rilasciato 1987 Di Adobe Systems

Adobe Illustrator (.ai) è un formato di file standard supportato da KaijuConverter per l’archiviazione, la condivisione e la conversione multipiattaforma.

Famiglia

Raster & Vector Images

Estensione

.ai

Tipo MIME

application/illustrator, application/postscript

Utilizzabile come

Input Output

La storia

COME AI
È NATO.

1987

2000

Adobe Illustrator 1.0 shipped in March 1987 as Adobe’s first end-user product — and the .ai file was its native save format. The earliest AI files were actually valid EPS PostScript with some Adobe-specific extensions. That continued for a decade until Illustrator 9 (2000), when Adobe pivoted AI to a PDF-based container. Since then, an .ai file is essentially a PDF with private Illustrator metadata layered on top.

That hybrid heritage is the .ai’s superpower and its weirdness. You can rename a modern .ai to .pdf and it will open in any PDF reader with a flattened view of the artwork. Open the same file in Illustrator and you get the full editable layer stack, symbol library, and art boards. For most designers, AI is the master file; every other deliverable (PDF, EPS, SVG, PNG) is exported from it.

CURIOSITÀ E
ANEDDOTI.

From Illustrator 9 (2000) onward, .ai files are actually PDF containers with Adobe private metadata — rename .ai to .pdf and it opens in Acrobat.

The format supports an arbitrary number of art boards (separate canvases) in one file — handy for multi-size design kits.

Layer, symbol, and brush data are stored in a private "AIPrivateData" dictionary that only Adobe tools fully understand.

Adobe Illustrator 1.0 shipped on a single 3.5" floppy disk and cost $495 in 1987 — about $1,300 in today’s money.

The earliest AI files from 1987-1999 were PostScript-based and are now notoriously hard to open in modern Illustrator.

PUNTI DI FORZA E
LIMITAZIONI.

Punti di forza

Native format for Adobe Illustrator — full fidelity for every tool, effect, and layer.
PDF-compatible since Illustrator 9 — any PDF reader can display a flattened preview.
Supports art boards, symbols, brushes, gradient meshes, and effects.
Professional print workflow integration — CMYK, spot colors, and color profiles are preserved.
Tight Creative Cloud integration with Photoshop, InDesign, and After Effects.

Limitazioni

Proprietary — true editability requires Adobe Illustrator or a few niche alternatives (Affinity Designer, Inkscape partial).
Browsers and lightweight viewers show only the flattened PDF preview, not layers.
Old AI files (pre-v9) are PostScript-based and often unopenable in modern Illustrator.
File sizes can balloon when multiple art boards embed hi-res raster images.
Subscription-locked: no perpetual-license path to the full editor since 2013.

Dimensioni e pesi tipici

Logo with one art board

200 KB - 2 MB

Full brand identity kit (multi art boards)

10-50 MB

Complex illustration with embedded photos

100-500 MB

Specifiche tecniche

MIME type: application/postscript or application/pdf (modern)
Extensions: .ai
Current container: PDF 1.5+ (since Illustrator 9, 2000)
Legacy container: PostScript (pre-Illustrator 9)
Color modes: RGB, CMYK, Grayscale; supports spot colors and Pantone

STRUMENTI STUDIO PER AI

Strumenti Specializzati per File .AI

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CONVERTI DA
AI

ai jpg ai png ai webp ai avif ai gif ai bmp ai tiff ai ico ai svg ai pdf

CONVERTI IN
AI

pdf ai eps ai svg ai png ai jpg ai webp ai

Casi d'uso comuni

Vector logo design, print illustration, brand asset creation