What is the X4K file format?
A file with the .X4K extension is a file known as XML4King Configuration. It belongs to the Settings Files category. This format is associated with Optimal Performance.
The reliable way to open a .X4K file is with software that recognises this exact format, rather than guessing from the file name. If you are not sure what created a file, our file identifier can read its first bytes and name the real format, even when the file has been renamed.
This page lists 1 programs that open .X4K files. A fully verified, hand-written description of this format is being prepared; until then, the details on this page are drawn directly from our database.
Format details
in a nutshellPrograms that open X4K files
Windows1 app
Community Q&A
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