Bootstrap
Sleek, intuitive, and powerful front-end framework for faster and easier web development.
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Bootstrap 5
Our default branch is for development of our Bootstrap 5 release. Head to the v4-dev
branch to view the readme, documentation, and source code for Bootstrap 4.
Table of contents
Quick start
Several quick start options are available:
•
git clone https://github.com/twbs/bootstrap.git
Read the Getting started page for information on the framework contents, templates, examples, and more.
Status
What’s included
Within the download you’ll find the following directories and files, logically grouping common assets and providing both compiled and minified variations.
Download contents
1bootstrap/
2 ├── css/
3 │ ├── bootstrap-grid.css
4 │ ├── bootstrap-grid.css.map
5 │ ├── bootstrap-grid.min.css
6 │ ├── bootstrap-grid.min.css.map
7 │ ├── bootstrap-grid.rtl.css
8 │ ├── bootstrap-grid.rtl.css.map
9 │ ├── bootstrap-grid.rtl.min.css
10 │ ├── bootstrap-grid.rtl.min.css.map
11 │ ├── bootstrap-reboot.css
12 │ ├── bootstrap-reboot.css.map
13 │ ├── bootstrap-reboot.min.css
14 │ ├── bootstrap-reboot.min.css.map
15 │ ├── bootstrap-reboot.rtl.css
16 │ ├── bootstrap-reboot.rtl.css.map
17 │ ├── bootstrap-reboot.rtl.min.css
18 │ ├── bootstrap-reboot.rtl.min.css.map
19 │ ├── bootstrap-utilities.css
20 │ ├── bootstrap-utilities.css.map
21 │ ├── bootstrap-utilities.min.css
22 │ ├── bootstrap-utilities.min.css.map
23 │ ├── bootstrap-utilities.rtl.css
24 │ ├── bootstrap-utilities.rtl.css.map
25 │ ├── bootstrap-utilities.rtl.min.css
26 │ ├── bootstrap-utilities.rtl.min.css.map
27 │ ├── bootstrap.css
28 │ ├── bootstrap.css.map
29 │ ├── bootstrap.min.css
30 │ ├── bootstrap.min.css.map
31 │ ├── bootstrap.rtl.css
32 │ ├── bootstrap.rtl.css.map
33 │ ├── bootstrap.rtl.min.css
34 │ └── bootstrap.rtl.min.css.map
35 └── js/
36 ├── bootstrap.bundle.js
37 ├── bootstrap.bundle.js.map
38 ├── bootstrap.bundle.min.js
39 ├── bootstrap.bundle.min.js.map
40 ├── bootstrap.esm.js
41 ├── bootstrap.esm.js.map
42 ├── bootstrap.esm.min.js
43 ├── bootstrap.esm.min.js.map
44 ├── bootstrap.js
45 ├── bootstrap.js.map
46 ├── bootstrap.min.js
47 └── bootstrap.min.js.map
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.js
and minified bootstrap.bundle.min.js
) include Popper.
Bugs and feature requests
Have a bug or a feature request? Please first read the issue guidelines and search for existing and closed issues. If your problem or idea is not addressed yet, please open a new issue.
Documentation
Bootstrap’s documentation, included in this repo in the root directory, is built with Astro and publicly hosted on GitHub Pages atDocumentation search is powered by Algolia's DocSearch.
Running documentation locally
1.
npm install
to install the Node.js dependencies, including Astro (the site builder).
2.
npm run test
(or a specific npm script) to rebuild distributed CSS and JavaScript files, as well as our docs assets.
3.
/bootstrap
directory, run npm run docs-serve
in the command line.
4.
http://localhost:9001/
in your browser, and voilà.
Learn more about using Astro by reading its documentation.
Documentation for previous releases
You can find all our previous releases docs onContributing
Please read through our contributing guidelines. Included are directions for opening issues, coding standards, and notes on development.
Moreover, if your pull request contains JavaScript patches or features, you must include relevant unit tests. All HTML and CSS should conform to the Code Guide, maintained by Mark Otto.
Editor preferences are available in the editor config for easy use in common text editors. Read more and download plugins atCommunity
Get updates on Bootstrap’s development and chat with the project maintainers and community members.
•
irc.libera.chat
server, in the #bootstrap
channel.
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bootstrap
on packages which modify or add to the functionality of Bootstrap when distributing through npm or similar delivery mechanisms for maximum discoverability.
Versioning
For transparency into our release cycle and in striving to maintain backward compatibility, Bootstrap is maintained under the Semantic Versioning guidelines. Sometimes we screw up, but we adhere to those rules whenever possible.
See the Releases section of our GitHub project for changelogs for each release version of Bootstrap. Release announcement posts on the official Bootstrap blog contain summaries of the most noteworthy changes made in each release.
Creators
Mark Otto•
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Thanks
Thanks to BrowserStack for providing the infrastructure that allows us to test in real browsers!
Thanks to Netlify for providing us with Deploy Previews!
Sponsors
Support this project by becoming a sponsor. Your logo will show up here with a link to your website. [Become a sponsor]
Backers
Thank you to all our backers! 🙏 [Become a backer]
Copyright and license
Code and documentation copyright 2011-2025 the Bootstrap Authors. Code released under the MIT License. Docs released under Creative Commons.