Bootstrap source code

Once downloaded, unzip the compressed folder to see the structure of (the compiled) Bootstrap. You'll see something like this:

bootstrap/ ├── css/ │ ├── bootstrap.css
                    │ ├── │ ├── bootstrap.min.css │ ├── bootstrap-theme.css │ ├──
           │ └── bootstrap-theme.min.css ├── js/ │ ├── bootstrap.js
                    │ └── bootstrap.min.js └── fonts/ ├── glyphicons-halflings-regular.eot ├── glyphicons-halflings-regular.svg
                    ├── glyphicons-halflings-regular.ttf ├── glyphicons-halflings-regular.woff └── glyphicons-halflings-regular.woff2

This is the most basic form of Bootstrap: precompiled files for quick drop-in usage in nearly any web project. We provide compiled CSS and JS (bootstrap.*), as well as compiled and minified CSS and JS (bootstrap.min.*). CSS source maps (bootstrap.*.map) are available for use with certain browsers' developer tools. Fonts from Glyphicons are included, as is the optional Bootstrap theme.

The Bootstrap source code download includes the precompiled CSS, JavaScript, and font assets, along with source Less, JavaScript, and documentation. More specifically, it includes the following and more:

Easy to Install

Simply download a CSS file and replace the one in Bootstrap. No messing around with hex values.

Open Source

Bootstrap themes are released under the MIT License and maintained by the community on GitHub.

Tuned for 3.3.4

Themes are built for the latest version of Bootstrap. Version 2 and others are also available to download.


Changes are contained in just two LESS or SASS files, enabling modification and ensuring forward compatibility.

Get Plugged In

An API is available for integrating with your platform. In use by NodeBB, BootSnap, and others.

Stay Updated

Be notified about updates by subscribing via RSS feed, email, or Tumblr.

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