One thing that occupies a surprising amount of space on a Mac is the Application Support files for Epichrome single-site browser “apps.”
My thanks to @ukhaiku for letting me know of a beta update to the previously useful Fluid app. Single-site browsers done with Fluid 2 have vastly smaller support files. In addition creating SSBs with Fluid is done in one window with the ability to change the favicon later.
With Epichrome, at least five consecutive windows & steps are needed.