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xllify Build

Welcome to the support wiki for the xllify Build action.

xllify.com is easiest way to add custom functions to Microsoft Excel with this GitHub Action.

Feed the action Luau scripts and get back high performance custom functions packaged as an .xll Excel add-in. You can sell, distribute and deploy this .xll however you wish.

Note that currently only Microsoft Excel on Windows is supported. Mac support will involve some (!) compromises, but may follow if there's demand.

Caveats

• .xll files are not signed and can only run from safe locations. xllify XLLs may trigger a warning when you load them into Excel, depending upon your environment. This is all explained here: https://support.microsoft.com/en-gb/topic/excel-is-blocking-untrusted-xll-add-ins-by-default-1e3752e2-1177-4444-a807-7b700266a6fb about ways to work around this for now. Examples of using your own signing certificates are coming soon.