File Extension CEF

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Have you encountered a problem with a CEF 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 CEF file here. In the further part of this page we have added a list of programs that should open your CEF file. It is enough you choose a proper application for your operating system, download and install it.


The file extension CEF is used to denote so-called compact embedded fonts, ie embedded fonts of the illustrator vector drawing software. CEF is an Adobe special technique that is optimized especially for the presentation of small fonts.

If fonts are used in a svg document, they can either be embedded directly or linked. When linking (linking) fonts, these are paged out in a CEF file, which Illustrator automatically generates when saving a svg document.

These CEF files can be used in other svg files and save space. Note that CEF is not part of the SVG standard and therefore svg files using this technology can not be viewed by any svg viewer. Such svg files can be displayed with the Adobe SVG Viewer, for example.

Programs which can open a CEF file

How to open a CEF file? Advice and guidance

Absolutely most often appearing reason that prevents you from opening the CEF 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 CEF 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 CEF files. At this point we are looking for disk space where the application was installed in and we can link it with a CEF file. Since then, our operating system will use the selected program to support all CEF files.

Other issues

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

- verify that the CEF 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 CEF 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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