The file extension for an Excel add-in is .xlam.
This extension stands for "Excel Macro-Enabled Add-In." Add-ins are files that contain macros and other code that can extend the functionality of Microsoft Excel. They can be used to automate tasks, add new features, or customize the user interface.
When you create an Excel add-in, you can save it with the .xlam extension. This allows you to easily share and install the add-in on other computers.
You can also use other file extensions for Excel add-ins, such as:
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.xla: This extension is for older Excel add-ins. It is still supported in newer versions of Excel, but it is not recommended for new add-ins.
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.xlsm: This extension is for Excel workbooks that contain macros. While not strictly an add-in, it can be used to create add-ins that are bundled with a workbook.
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.xlsb: This extension is for Excel workbooks that are saved in a binary format. It is not typically used for add-ins.
When you install an Excel add-in, it is usually placed in the following directory:
- C:\Program Files\Microsoft Office\root\Office16\XLSTART
This directory is automatically searched by Excel when it starts up. If an add-in is found in this directory, it will be loaded automatically.
