TraceBackground plug-in

How do I install and use the TraceBackground plug-in?

Double click it.
Follow the on-screen instructions.
Restart the app.
You’ll find it in the Filter menu.

Talking about the plug-in, where can I download the latest version?

When I download the plugin it is in a folder format not as plugin…is it missing an ending?

If you downloaded it, you should get a file called “TraceBackground.glyphsFilter”.