Experimenting with a bunch of converts collected from various articles. Will try using invokes like following:
{{#invoke:convert/tester|make_tests|page=User:Johnuniq/tests|section=1}}
Above is hopeless when using converts with the old template because Lua only has 10 seconds to run and it is not possible to do 1000 conversions in that time (when using the old templates). The following came from Special:ExpandTemplates where 1000 conversions just works. The templates have been changed to use the module, but the output is for the old templates, with some slight cleaning.
Will try following some time but there are 6912 converts and that's a big ask.
{{#invoke:convert/tester|run_tests|page=User:Johnuniq/tests}}