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File Type of the Day

Today • December 13

.XLL

Microsoft Excel Add-in

An XLL file is an add-in used by Microsoft Excel, a popular spreadsheet application. It contains extra functions, templates, or other tools that enhance the capabilities of Excel.

December 12

.APP

macOS Application Bundle

An APP file is a macOS application bundle. It contains the files needed to run a macOS application, including the app's executable, resources, and other ancillary files.

December 11

.JNLP

Java Web Start File

A JNLP file is a Java Web Start (JWS) file, saved in the Java Network Launching Protocol (JNLP) format. It contains XML information used to launch and manage a Java program (.JAR file) over a network.

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FileInfo.com contains a searchable database of over 10,000 file extensions with detailed information about the associated file types. You can look up information about unknown file types and find programs that open the files. Learn more about FileInfo.com.


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