Benefits of the Coverage Tool

The various benefits of the Coverage Tool are:

• Details viewed in a Table: You get a tabular view of various origins from where the files are being downloaded. The view has columns that are URL, type, total bytes, and unused bytes that provide the necessary information to the developers.
• Inspect individual file size: You get the idea about the file size that each JS or CSS file is taking up in memory. You also get the unused size, which helps the developers improve performance by removing the unused code.
• List all JS and CSS files: You get a list of all JS and CSS files with the respective URL. This helps the developer get an idea of all the files requested by the web page so, they can remove the unknown or unwanted files.
• Usage Bar: You also get a visual bar under the Usage Visualization column with red and blue colors representing the used and unused bytes, respectively. This saves time in finding the unused code, as the developer can just get the required information at a glance.

The Coverage Tool is a very basic tool that displays various files requested by the webpage to the server. It provides various information about the file such as URL, type, total bytes, and unused bytes. The tool is mostly used to find out the JS and CSS code that is not being used by the site. This information is very important to remove unwanted or unused code that takes a lot of memory which helps the developers to speed up the web page loading and performance.