Picto thématique

Rule n° 222 - Style sheets of the website are minified.

It is possible to reduce the size of the CSS style sheets without affecting the final rendering. This operation, known as minification, minimises the amount of data to be downloaded and helps to improve performance.

#Eco-conception #Server and performance #Development


  • Minimize the quantity of data for users to download.
  • Improve performance.
  • Reduce the energy impact related to the consultation of the site.


Remove unnecessary spaces and comments in CSS files using dedicated tools.


For the whole website

  • Check manually within all CSS files that new lines, comments, indents or line breaks are present.
  • Or use the listing of non-minified CSS files using developer tools (browsers, online tools, etc.)

By Opquast - Read the license

Business application and benefits

The rules should be applied to your projects from the design phase through to post-implementation , and they should be understood by all professionals with web and customer experience (CX) responsibilities: from strategy to operations, marketers to project managers, and editorial to technical staff. The benefits of using this ruleset are numerous, including improving customer satisfaction, web performance, and e-commerce, and expanding your client base, while also decreasing your errors and costs.

Multidisciplinary verticles - accessiiblity, SEO, e-commerce, ecodesign etc..- starting from the foundational Opquast base.

The objective of these rules and the Opquast community mission is ‘making the web better’ for your customers and for everyone! Opquast rules cover the key major areas of risk that can negatively affect website users such as privacy, ecodesign, accessibility and security.

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