steamsync

steamsync is a command line tool to add games from various launchers as steam shortcuts. It supports (to an extent):

• The Epic Games Store (best)
• Xbox games installed on Windows (limited)
• itch.io
• legendary (limited)

It can also attempt to fetch art from the Steam catalog (--download-art)

You can use it via:

• The command line, via pip
• A more user-friendly but out of date Windows application

TL;DR

For more detailed instructions on using the CLI, see here.

1. pip install steamsync
2. steamsync