AI files are created by Adobe Illustrator and they contain paths connected by points, instead of bitmap image data. These files can be easily enlarged without any quality loss.
In order to open AI files, users need to install Adobe Illustrator or to find a graphic viewer that supports this file extension.
One should keep in mind that some utilities might rasterize the image since they will need to convert the vector data to a bitmap format in order to be able to display it.
There are numerous applications that will allow users to access AI images and to export them to more common formats, thus being able to manage them with greater ease.
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