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“Minify” term is basically used to describe the method of removing white spaces, line breaks, comments, block delimiters and other unnecessary characters from the source code. It reduces the size of the file and helps to load it faster, in turn, improves the site speed and performance. The concept of minifying is applied to all the files sent to user’s browser including HTML, CSS, and JavaScript. But here, we will limit our discussion to minifying CSS only.