Removing these unnecessary characters is often referred to as minification.Ĭompress of JS files also includes reducing duplication in a dataset by detecting repeating patterns and replacing them with more efficient coding in order to reduce the bytes needed to store and transmit the dataset. These larger files can slow download time and negatively impact the overall performance of the website. However, while these additional spaces and other unnecessary characters in the script do not impact the ability of the file to run, they do create larger files. Why to Compress JS Filesĭuring the writing of the JavaScript code, the very human programmers place white spaces into the code as a way to mark certain areas for ease in debugging. Nearly all websites now use JS either internally in HTML code or through external JS files. JavaScript was initially created in around 1995 and was used in the Netscape Navigator web design tool. js files, and these files will hopefully be compressed. If you're creating mobile applications or web browser-based games, your finished product will contain. When Facebook automatically updates your newsfeed, this is also a function of JavaScript. When you begin searching for something on Google, you will receive suggested search terms after you've typed a character or two into the search bar.

In order to understand what these very common files do, consider some of the functions you regularly use on the internet.

How to compress iso files