Source

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Discover what's included in Bootstrap, including our precompiled and source code flavors.

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Precompiled Bootstrap

Once downloaded, unzip the compressed folder and you'll see something like this:

bootstrap/
├── css/
│   ├── bootstrap-grid.css
│   ├── bootstrap-grid.css.map
│   ├── bootstrap-grid.min.css
│   ├── bootstrap-grid.min.css.map
│   ├── bootstrap-grid.rtl.css
│   ├── bootstrap-grid.rtl.css.map
│   ├── bootstrap-grid.rtl.min.css
│   ├── bootstrap-grid.rtl.min.css.map
│   ├── bootstrap-reboot.css
│   ├── bootstrap-reboot.css.map
│   ├── bootstrap-reboot.min.css
│   ├── bootstrap-reboot.min.css.map
│   ├── bootstrap-reboot.rtl.css
│   ├── bootstrap-reboot.rtl.css.map
│   ├── bootstrap-reboot.rtl.min.css
│   ├── bootstrap-reboot.rtl.min.css.map
│   ├── bootstrap-utilities.css
│   ├── bootstrap-utilities.css.map
│   ├── bootstrap-utilities.min.css
│   ├── bootstrap-utilities.min.css.map
│   ├── bootstrap-utilities.rtl.css
│   ├── bootstrap-utilities.rtl.css.map
│   ├── bootstrap-utilities.rtl.min.css
│   ├── bootstrap-utilities.rtl.min.css.map
│   ├── bootstrap.css
│   ├── bootstrap.css.map
│   ├── bootstrap.min.css
│   ├── bootstrap.min.css.map
│   ├── bootstrap.rtl.css
│   ├── bootstrap.rtl.css.map
│   ├── bootstrap.rtl.min.css
│   └── bootstrap.rtl.min.css.map
└── js/
    ├── bootstrap.bundle.js
    ├── bootstrap.bundle.js.map
    ├── bootstrap.bundle.min.js
    ├── bootstrap.bundle.min.js.map
    ├── bootstrap.esm.js
    ├── bootstrap.esm.js.map
    ├── bootstrap.esm.min.js
    ├── bootstrap.esm.min.js.map
    ├── bootstrap.js
    ├── bootstrap.js.map
    ├── bootstrap.min.js
    └── bootstrap.min.js.map

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.*). Source maps ( bootstrap.*.map) are available for use with certain browsers' developer tools. Bundled JS files ( bootstrap.bundle.jsand minified bootstrap.bundle.min.js) include Popper .

CSS files

Bootstrap includes a handful of options for including some or all of our compiled CSS.

CSS files	layout	content	Components	Utilities
`bootstrap.css` `bootstrap.rtl.css` `bootstrap.min.css` `bootstrap.rtl.min.css`	Included	Included	Included	Included
`bootstrap-grid.css` `bootstrap-grid.rtl.css` `bootstrap-grid.min.css` `bootstrap-grid.rtl.min.css`	Only grid system	—	—	Only flex utilities
`bootstrap-utilities.css` `bootstrap-utilities.rtl.css` `bootstrap-utilities.min.css` `bootstrap-utilities.rtl.min.css`	—	—	—	Included
`bootstrap-reboot.css` `bootstrap-reboot.rtl.css` `bootstrap-reboot.min.css` `bootstrap-reboot.rtl.min.css`	—	Only Reboot	—	—

js files

Likewise, we have options for including some or all of our compiled JavaScript.

js files	popper
`bootstrap.bundle.js` `bootstrap.bundle.min.js`	Included
`bootstrap.js` `bootstrap.min.js`	—

Bootstrap source code

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

bootstrap/
├── dist/
│   ├── css/
│   └── js/
├── site/
│   └──content/
│      └── docs/
│          └── 5.1/
│              └── examples/
├── js/
└── scss/

The scss/and js/are the source code for our CSS and JavaScript. The dist/folder includes everything listed in the precompiled download section above. The site/docs/folder includes the source code for our documentation, and examples/of Bootstrap usage. Beyond that, any other included file provides support for packages, license information, and development.