Bootstrap 3 or Bootstrap 4? Which one to choose?

Bootstrap is a free and open-source framework for creating websites and web applications. It’s the most popular HTML, CSS, and  JS framework to create & develop any website. Bootstrap is not only responsive but mobile-first also.

Bootstrap Components

Bootstrap includes components like buttons, navbars, dropdown menus, alert boxes, and more. We can use this component simply by using the appropriate class name. Bootstrap 3 was launched in the year of 2013, and then Bootstrap 4- in August 2017.  Bootstrap 4 is the latest version of Bootstrap.

Main Differences between Bootstrap 3 and Bootstrap 4 :

There are many changes between Bootstrap 3 and Bootstrap 4. Here is top 5  changes.
  • In Bootstrap 3 source CSS Files is in LESS.  But in Bootstrap 4 source CSS files converted in SASS. It compiles more faster.
  • In Bootstrap 3  it has 4 grid system (col-xs-3, col-sm-3, col-md-3, col-lg-3).  But in Bootstrap 4 it has 5 grid system (.col-, .col-sm-3, .col-md-3, .col-lg-3, .col-xl-3).  In Bootstrap 4 removed the xs from the lowest break point.
  • Bootstrap 4 is built with flexbox, grid system in the Flex-box, it can not be used with every element. The Flexible Box makes easier to design flexible responsive layout structure without using float or positioning. To know about flex please go with this link CSS Flexbox Tutorial.
  • In Bootstrap 3, we use col-md-offset-4 as Offset class, whereas in Bootstrap 4, we use offset-4
  • Bootstrap 4 supports the inverse tables, .responsive-table to the <table> element etc.

Advantages of Bootstrap 4

  • Fewer Cross browser bugs.
  • A consistent framework that supports major of all browsers and CSS compatibility fixes.
  • Lightweight and customizable.
  • Responsive structures and styles.
  • Several JavaScript plugins using the jQuery.

Disadvantages of Bootstrap 4

  • It will be difficult for those who are not so adaptable to accept that bootstrap has changed the classes and media query breakpoint.
  • It does not provide support to non-responsive usage.
  • It also does not support IE8, IE9 and iOS 6.


These are just some of the features to differentiate between Bootstrap 3 and 4.  Bootstrap 3 was primarily the “mobile-first” framework designed with the idea of presenting nothing but the best. With the change in time and technology, Bootstrap 4 has narrowed down the perspective while offering the best customization.