Minification is the process of deleting unneeded or redundant data without impacting how the resource is handled by the browser - for example, code comments and formatting, removing useless code, and so on.
To minify JS, CSS and HTML files, comments and excess spaces must be deleted, as well as variable names must be crunched to minimise code and file size. The minified file version delivers the same functionality while lowering network request bandwidth.
Removes useless code.
Less lines of code, less storage