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Difference between Bootstrap4 and Bootstrap5 Framework

Bootstrap is a free and open-source toolkit for developing responsive web pages and online apps. HTML, CSS, and the JavaScript framework make it simple to create responsive, mobile-first websites. Its primary goal is to address the cross-browser compatibility issue. Bootstrap is at the heart of any website optimized for all screen sizes and looks great in all modern browsers.

Bootstrap 5 includes custom form controls. Bootstrap 4's form controls used whatever presets were available in each browser. The form controls in Bootstrap 5 will have a significantly more consistent appearance and feel across all browsers due to their custom design.

In bootstrap 5, some classes remove, which is available in the bootstrap 4 versions.

  • a "row form"
  • a "form inline"
  • a "list inline"
  • a "form inline"

In bootstrap 5, some classes are not available in the bootstrap 4 versions.

  • gx-* : the horizontal/column gutters width
  • gy-* :the vertical/row gutters width
  • g-* :the horizontal & vertical gutter width
  • rows-cols-auto

Comparison between Bootstrap 4 and Bootstrap 5

Features Bootstrap 4 version Bootstrap 5 version
Released date Bootstrap 4 was released in January 2018, and it marked a significant advance over previous versions. Bootstrap 5 was released in May 2021. This version came after multiple iterations of alpha and beta releases, and as a result, it had a slew of important additions and new features.
Links <link rel = "stylesheet" href = "[email protected]/dist/css/bootstrap.min.css">
<script src = "[email protected]/dist/js/bootstrap.bundle.min.js"> </script>
<link href = "[email protected]/dist/css/bootstrap.min.css" rel = "stylesheet">
<script src = "[email protected]/dist/js/bootstrap.bundle.min.js"> </script>
Grid System Bootstrap 4 has five levels: xs, sm, md, lg, and xl. Bootstrap 5 has six levels: xs, sm, md, lg, xl, and xxl.
Jquery plug-in Bootstrap 4 includes jquery and all associated plug-ins. Jquery has been deleted and replaced with vanilla JS and several functional plug-ins in Bootstrap 5.
Color Bootstrap 4 provides a few colors for a web page. Extra colors insert into the looks, and the card's color palette was upgraded. There are a variety of colors to pick from the Bootstrap 5 framework.
Internet explorer Bootstrap 4 is compatible with both Internet Explorer 10 and 11. Bootstrap 5 does not support Internet Explorer 10 and 11.
Elements of Form Radio buttons and checkboxes appear differently in different operating systems and browsers. The form takes advantage of whatever basic browser features are available. The appearance of form elements will not change while using a different operating system or browser. The forms alternate and add form controls; they are not browser-dependent.
API for Utilities We are unable to alter utilities in Bootstrap 4. Bootstrap 5 provided us the ability to tweak and develop our utility.
Utilize a gutter. Bootstrap 4 uses glutter in a px font size. Use .g* with font size set to rem in bootstrap 5.
Vertical Groups Columns can be positioned relative to one another. Columns cannot be positioned relative to one another.
Icons for Bootstrap Bootstrap 4 lacks SVG icons; we must rely on font-awesome for icons. Bootstrap 5 has its own set of SVG icons.
Jumbotron Bootstrap 4 compatible with jumbotron. It is not compatible with jumbotron.
deck of cards The card deck is used to make an isset of cards with the same width and height. The card deck class has been removed from bootstrap.
Navbar We have the inline-block attribute, and the white dropdown will be the default for the dropdown-menu-dark class. The inline-block property has been removed, and the dropdown-menu-dark class now has a black dropdown as the default.
Generator of Static Websites Bootstrap 4 makes use of the Jekyll software. Bootstrap 5 uses a fast static generator which is Hugo.
grid flexbox It makes vertical designs easier to construct, and columns and rows can be simply implemented. The justify-center-content classes use directly to align according to the requirement. A more complex grid system is offered, and columns do not have relative locations.
CSS usability Bootstrap 4 uses fewer CSS properties. Bootstrap 4 uses more CSS properties.
offcanvas component There is no off-canvas element. The offcanvas component is now available.
RTL support Languages do not enable RTL (right to the left) switching. It enables RTL (right to the left) language switching.


There are many similarities and differences in both bootstrap frameworks. Bootstrap 4 and bootstrap 4 have their functionalities. Bootstrap 5 is an advanced version of the bootstrap 4 frameworks. We can choose the version as per requirement and availability of the functions.

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