Dev UtilitiesLesson 137Free preview

CSS Minifier

This lesson is part of Web Developer Tools · All levels

Summary

The CSS minifier removes unnecessary spaces, comments, and characters from the style sheet to make it smaller. The resulting CSS remains valid and can be directly used by the browser. Minification reduces the size of the transfer, not encrypting or hiding the code. Save the readable source version and test the display after the minification process.

Key points

Minification reduces file size by removing whitespace and comments
The name of the class and CSS rules are not changed by simple minifiers
Always save the source file for development
Cases like calc() require spaces to remain valid
View testing after the CSS is minified

Full lesson

Code examples and quizzes

Full lessons, code examples, and quizzes are available to subscribers. 5 questions.