After installing the script, bypass the cache of the page.
Get ScriptInstaller, then navigate to User:Gary/smaller templates.js and click "Install" at the top.
(This will generate text which can be used on any-language Wikipedia.)
{{
subst:lusc|1=User:Gary/smaller templates.js}}
on the bottom of
your common.js page or
your skin.js page.(This can only be used on the English Wikipedia.)
{{
subst:iusc|1=User:Gary/smaller templates.js}}
on the bottom of
your common.js page or
your skin.js page.