Batch minify and select all option

it works already. I just missed how to use it.

The batch part is what is needed.

I got a 501 gateway timeout error.

Workaround: I can rerun and just select minify items not minified and select all.

It's going to be tough to debug this error without knowing more about the error from your server logs, the webserver type and config, etc.

This is a feature request I think.

When I select minify, there are over 32,000 js files on my install (not sure why. I think it is the library modules.). I am also using composer would it be looking in the vendor file?

I can start the minify process fine.
It does time out.
When I go back to the page I select minify (skip previously minified)
I would assume it would start from the last minified js file on.
But it starts from the beginning.
This leads to another timeout without any new files being added to minify.

Sounds like it's timing out when it is trying to gather the files to process. Have you tried the drush command?

    drush scan-js
    drush minify-js
    drush minify-js-skip

Sounds the same to me. I have configured several limits on my server and I believe I also have had such error. Maybe this should be documented in either the interface or on the project page?