File Extension AI4

  • Full name
    Generic Encapsulated PostScript Graphic
  • Developer
    Adobe Systems Incorporated
Have you encountered a problem with a AI4 file? Don’t you know which program opens a file with this extension? You will find all the information you need about working with a AI4 file here. In the further part of this page we have added a list of programs that should open your AI4 file. It is enough you choose a proper application for your operating system, download and install it.


With the file extension AI4 so-called general encapsulated postscript files of the vector graphics software Adobe Illustrator were marked. It is the default file format used to store, among other things, drawings, objects, and settings. The file extension AI4 refers to the version 4, which came in the early 1990s only for Microsoft Windows on the market.

The AI format does not save its data in EPS format and AI4 files may contain some Illustrator-specific instructions, so AI4 files may not be able to be opened by EPS-compatible software.

In addition to the meanwhile common ending ai from the version 3 to 8 also the ending ai with the appropriate version number was used. It should be noted that each version has also introduced new functionalities and other keywords for the header information. Therefore, ai files of different Illustrator versions are not necessarily 100% compatible. However, most recent programs that can handle Illustrator files can handle all the old format variations.

Programs which can open a AI4 file

How to open a AI4 file? Advice and guidance

Absolutely most often appearing reason that prevents you from opening the AI4 file is the lack of a proper application to support it in your operating system. It is notably the first thing you need to address. When one of the programs to support a AI4 file from the list is already installed, you can try to rerun the file. The system should display a message asking you to choose a primary application to support AI4 files. At this point we are looking for disk space where the application was installed in and we can link it with a AI4 file. Since then, our operating system will use the selected program to support all AI4 files.

Other issues

Despite the described problem with AI4 there may be many more problems. If the existing operations were not effective, get involved with the following matters:

- verify that the AI4 file is not damaged and that it has been downloaded or copied in whole
- verify that the file has a file extension that has not been intentionally changed (for example, if it do not contain other information than its extension suggests)
- make sure again whether the AI4 file type is linked in the operating system with a proper program
- make sure that the file is not infected with a virus and you have up to date software and drivers.

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