5 Best CSS Minification Tools in 2021

CSS minification is a technique by which your css is condesed into a much smaller footprint. You conserve considerable bandwidth by doing this but lose human readability (CSS is really meant for your browser and not your users). There are various methods by which CSS minification is achieved. CSS minfication removes all unnecessary characters from the code. This includes removing white space characters, new line characters, comments etc. It does not affect the functionality of the code. Analyzo has listed the best CSS Minification Tools that you can choose from based on your requirements.

Best CSS Minification Tools

Price : Free

CSSMinifier is an online minifier to minify the CSS files. It helps the users to reduce  the size of the file and reduce the loading time of the website.

Price : Free

Refresh-sf is a web interface to minify the user's JavaScript, CSS and HTML. It uses UglifyJS 2, Clean-CSS and HTML Minifier. The users can choose the format based on their needs.

Price : Free

Minify is an online CSS and JavaScript minifier. It minifies the code of the user's website and reduces the loading time of their website.

CSS Compressor
Price : Free

CSS Compressor is a tool that helps the users to compress CSS (CSS 1, CSS 2, CSS 2.1 & CSS 3) to reduce CSS code size and make the user's website load faster. The users can select from 4 levels of compression, depending on how legible the users want the compressed CSS to be versus degree of compression.

YUI Compressor
Price : Free

The YUI Compressor is an open source tool which is written in java. It helps the users to minify both CSS and Javascript codes. It also uses Github Issues to track the issues.  

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FAQ's for CSS Minification Tools

What is the difference between minification and gzipping?

Both, minification and gzipping are methods of reducing the size of a code file. They are both great ways of making data transfer more efficient between a web server and a browser. Minification involves removing whitespaces, reducing long variable names, etc. On the other hand, gzipping consists of finding all repetitive strings and replacing them with pointers that point to the first instance of that string.

What are the benefits of minification?

Minification helps reduce bandwidth costs by reducing the amount of data that is transferred. By removing the extra data from a code file which only matters to the developers, minification considerably reduces the size of the file without affecting the functionality. Minification also helps improve page load times.

How minfication works?

Step 1: Firstly, CSS files are created by the developer. These CSS files consist of comments, longer function and variable names, etc. to improve readability. These things, however, have no role in execution of the code file.
Step 2: Minification is applied to the CSS file and whitespace, comments, etc. are removed. Also, longer function and variable names are reduced to shorter ones.
Step 3: The web server sends the minified version to the user which accounts for reduced bandwidth usage.

What is minification?

Minification involves removing all the data from a code file that isn’t required for the code to be executed. The minified files don’t need to be turned back into their original form for them to be executed.
Minification is carried out after the code has been written. Whenever a webpage is requested by the user, the minified version of the code file is sent instead of the normal one, which helps reduce bandwidth expenditure and leads to increased speed.
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