Compressor is a GPL Cart module that allows to aggregate JS and CSS files.

Installation

1. Download and extract to system/modules manually or using composer composer require gplcart/compressor. IMPORTANT: If you downloaded the module manually, be sure that the name of extracted module folder doesn't contain a branch/version suffix, e.g -master. Rename if needed.
2. Go to admin/module/list end enable the module
3. Enable aggregation at admin/module/settings/compressor