Vector

What is an AI file?

Updated Jul 2026

Definition

An AI file is a vector graphics format created by Adobe Illustrator, used for logos, illustrations, and print artwork. It stores shapes as mathematical paths rather than pixels, so it scales to any size without losing quality. Its main limit is that most software outside Illustrator can't open or edit it properly.

AIAdobe Illustrator

Extension: .ai
Type: Vector
Typically: Illustrator files
Transparency: None

Why AI exists

Adobe introduced the AI format alongside Illustrator in the 1980s, and it has stayed the program's native file format ever since. Every layer, path, and text object you draw in Illustrator gets saved into this one file.

Because it's vector-based, an AI file describes artwork as points, curves, and fills instead of a grid of pixels. That's why a logo saved as AI can be blown up to billboard size or shrunk to a favicon without turning blurry or blocky, which is exactly why designers reach for it over a photo format.

The catch is that AI is built to carry all of Illustrator's structure, layers, effects, editable text, so most other software either can't open it at all or only reads it as a flattened image, dropping the parts that made it editable. That gap is usually why people need an AI file converted to a PNG, SVG, or PDF before they can actually use it.

The trade-offs

Strengths

Scales to any size without losing quality
Keeps layers, paths, and text fully editable
Standard format for logos and print-ready artwork
Lossless, so no compression artifacts creep in

Watch-outs

Only opens reliably in Illustrator or compatible design software
Won't display in a browser or most photo viewers
Large, layered files can get unwieldy
Usually needs converting to PNG, JPG, or SVG for everyday use

A note on privacy

AI files can carry embedded metadata, such as the software version, fonts used, and sometimes author or company details saved in the document properties. Upload one to an online converter and that data travels with your original artwork to someone else's server. Converting it on your own machine keeps both the design and its embedded details on your computer.

Convert an AI file

Questions

How do I open an AI file?

Adobe Illustrator opens it natively, and a few other design programs can import it with varying accuracy. Without one of those, you'll usually need to convert it to a more common format like PNG, PDF, or SVG first.

Is AI better than SVG?

Neither is strictly better, they just serve different needs. AI preserves full editing detail for design work, while SVG is a leaner, universal vector format that displays directly in browsers and most apps.

Why did someone send me an AI file?

Designers often deliver logos and artwork as AI files because it keeps every layer and path editable for later changes. If you just need to view or use the image, you'll likely want it converted to a standard image format.

Can I convert an AI file without uploading it?

Yes. A desktop app like Morphjet converts AI files on your own computer, so the artwork and its embedded details never get sent anywhere.

Morphjet opens and converts AI and 1,800+ other formats, all on your own computer. Launching this July.