# bootstrap > The most popular front-end framework for developing responsive, mobile first projects on the web. Latest version **5.3.8** (published 2025-08-26) · MIT license · 0 weekly downloads ## Install ```sh npm install bootstrap pnpm add bootstrap yarn add bootstrap bun add bootstrap ``` ## Health **Score 63/100 (C)** — status: stable. Positive: has types package; esm support; no vulnerabilities; high maintenance score; high quality score; popular repo; extremely popular. Warnings: low downloads. Negative: stale. ## Facts | | | |---|---| | Version | 5.3.8 | | Published | 2025-08-26 | | First published | 2011-08-28 | | Weekly downloads | 0 | | License | MIT | | TypeScript types | separate (@types/bootstrap) | | Module format | ESM + CommonJS | | Dependencies | 0 | | Unpacked size | 9.2 MB | | Known vulnerabilities | 0 | | Install scripts | no | | GitHub stars | 174817 | | Author | The Bootstrap Authors | | Maintainers | bootstrap-admin, mdo, xhmikosr | | Keywords | css, sass, mobile-first, responsive, front-end, framework, web | ## Links - npm: https://www.npmjs.com/package/bootstrap - Repository: https://github.com/twbs/bootstrap - Homepage: https://getbootstrap.com/ - Issues: https://github.com/twbs/bootstrap/issues - Funding: https://github.com/sponsors/twbs - npm.io page: https://npm.io/package/bootstrap ## Alternatives - [style-dictionary](https://npm.io/package/style-dictionary.md) — 2.0M weekly downloads - [postcss-merge-idents](https://npm.io/package/postcss-merge-idents.md) — 1.7M weekly downloads - [@fontsource/noto-sans](https://npm.io/package/@fontsource/noto-sans.md) — 93.0K weekly downloads - [uglifycss](https://npm.io/package/uglifycss.md) — 71.6K weekly downloads - [mat4-interpolate](https://npm.io/package/mat4-interpolate.md) — 23.3K weekly downloads ## Recent versions - 5.3.8 (latest) — 2025-08-26 - 5.3.3 (latest-5) — 2024-02-20 - 5.3.0-alpha3 (next-5) — 2023-04-03 - 4.6.2 (latest-4) — 2022-07-19 - 3.4.1 (latest-3) — 2019-02-13 - 5.3.7 — 2025-06-17 - 5.3.6 — 2025-05-05 - 5.3.5 — 2025-04-04 - 5.3.4 — 2025-04-03 - 5.3.2 — 2023-09-14 - 5.3.1 — 2023-07-26 - 5.3.0 — 2023-05-30 - 5.3.0-alpha2 — 2023-03-24 - 5.3.0-alpha1 — 2022-12-24 - 5.2.3 — 2022-11-22 - … 53 more at https://npm.io/package/bootstrap/versions ## README

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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](https://github.com/twbs/bootstrap/tree/v4-dev) to view the readme, documentation, and source code for Bootstrap 4. ## Table of contents - [Quick start](#quick-start) - [Status](#status) - [What’s included](#whats-included) - [Bugs and feature requests](#bugs-and-feature-requests) - [Documentation](#documentation) - [Contributing](#contributing) - [Community](#community) - [Versioning](#versioning) - [Creators](#creators) - [Thanks](#thanks) - [Copyright and license](#copyright-and-license) ## Quick start Several quick start options are available: - [Download the latest release](https://github.com/twbs/bootstrap/archive/v5.3.8.zip) - Clone the repo: `git clone https://github.com/twbs/bootstrap.git` - Install with [npm](https://www.npmjs.com/): `npm install bootstrap@v5.3.8` - Install with [yarn](https://yarnpkg.com/): `yarn add bootstrap@v5.3.8` - Install with [Bun](https://bun.sh/): `bun add bootstrap@v5.3.8` - Install with [Composer](https://getcomposer.org/): `composer require twbs/bootstrap:5.3.8` - Install with [NuGet](https://www.nuget.org/): CSS: `Install-Package bootstrap` Sass: `Install-Package bootstrap.sass` Read the [Getting started page](https://getbootstrap.com/docs/5.3/getting-started/introduction/) for information on the framework contents, templates, examples, and more. ## Status [![Build Status](https://img.shields.io/github/actions/workflow/status/twbs/bootstrap/js.yml?branch=main&label=JS%20Tests&logo=github)](https://github.com/twbs/bootstrap/actions/workflows/js.yml?query=workflow%3AJS+branch%3Amain) [![npm version](https://img.shields.io/npm/v/bootstrap?logo=npm&logoColor=fff)](https://www.npmjs.com/package/bootstrap) [![Gem version](https://img.shields.io/gem/v/bootstrap?logo=rubygems&logoColor=fff)](https://rubygems.org/gems/bootstrap) [![Meteor Atmosphere](https://img.shields.io/badge/meteor-twbs%3Abootstrap-blue?logo=meteor&logoColor=fff)](https://atmospherejs.com/twbs/bootstrap) [![Packagist Prerelease](https://img.shields.io/packagist/vpre/twbs/bootstrap?logo=packagist&logoColor=fff)](https://packagist.org/packages/twbs/bootstrap) [![NuGet](https://img.shields.io/nuget/vpre/bootstrap?logo=nuget&logoColor=fff)](https://www.nuget.org/packages/bootstrap/absoluteLatest) [![Coverage Status](https://img.shields.io/coveralls/github/twbs/bootstrap/main?logo=coveralls&logoColor=fff)](https://coveralls.io/github/twbs/bootstrap?branch=main) [![CSS gzip size](https://img.badgesize.io/twbs/bootstrap/main/dist/css/bootstrap.min.css?compression=gzip&label=CSS%20gzip%20size)](https://github.com/twbs/bootstrap/blob/main/dist/css/bootstrap.min.css) [![CSS Brotli size](https://img.badgesize.io/twbs/bootstrap/main/dist/css/bootstrap.min.css?compression=brotli&label=CSS%20Brotli%20size)](https://github.com/twbs/bootstrap/blob/main/dist/css/bootstrap.min.css) [![JS gzip size](https://img.badgesize.io/twbs/bootstrap/main/dist/js/bootstrap.min.js?compression=gzip&label=JS%20gzip%20size)](https://github.com/twbs/bootstrap/blob/main/dist/js/bootstrap.min.js) [![JS Brotli size](https://img.badgesize.io/twbs/bootstrap/main/dist/js/bootstrap.min.js?compression=brotli&label=JS%20Brotli%20size)](https://github.com/twbs/bootstrap/blob/main/dist/js/bootstrap.min.js) ![Open Source Security Foundation Scorecard](https://img.shields.io/ossf-scorecard/github.com/twbs/bootstrap) [![Backers on Open Collective](https://img.shields.io/opencollective/backers/bootstrap?logo=opencollective&logoColor=fff)](#backers) [![Sponsors on Open Collective](https://img.shields.io/opencollective/sponsors/bootstrap?logo=opencollective&logoColor=fff)](#sponsors) ## 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 ```text 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 ```
We provide compiled CSS and JS (`bootstrap.*`), as well as compiled and minified CSS and JS (`bootstrap.min.*`). [Source maps](https://web.dev/articles/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](https://popper.js.org/docs/v2/). ## Bugs and feature requests Have a bug or a feature request? Please first read the [issue guidelines](https://github.com/twbs/bootstrap/blob/main/.github/CONTRIBUTING.md#using-the-issue-tracker) and search for existing and closed issues. If your problem or idea is not addressed yet, [please open a new issue](https://github.com/twbs/bootstrap/issues/new/choose). ## Documentation Bootstrap’s documentation, included in this repo in the root directory, is built with [Astro](https://astro.build/) and publicly hosted on GitHub Pages at . The docs may also be run locally. Documentation search is powered by [Algolia's DocSearch](https://docsearch.algolia.com/). ### Running documentation locally 1. Run `npm install` to install the Node.js dependencies, including Astro (the site builder). 2. Run `npm run test` (or a specific npm script) to rebuild distributed CSS and JavaScript files, as well as our docs assets. 3. From the root `/bootstrap` directory, run `npm run docs-serve` in the command line. 4. Open in your browser, and voilà. Learn more about using Astro by reading its [documentation](https://docs.astro.build/en/getting-started/). ### Documentation for previous releases You can find all our previous releases docs on . [Previous releases](https://github.com/twbs/bootstrap/releases) and their documentation are also available for download. ## Contributing Please read through our [contributing guidelines](https://github.com/twbs/bootstrap/blob/main/.github/CONTRIBUTING.md). 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](https://github.com/twbs/bootstrap/tree/main/js/tests). All HTML and CSS should conform to the [Code Guide](https://github.com/mdo/code-guide), maintained by [Mark Otto](https://github.com/mdo). Editor preferences are available in the [editor config](https://github.com/twbs/bootstrap/blob/main/.editorconfig) for easy use in common text editors. Read more and download plugins at . ## Community Get updates on Bootstrap’s development and chat with the project maintainers and community members. - Follow [@getbootstrap on X](https://x.com/getbootstrap). - Read and subscribe to [The Official Bootstrap Blog](https://blog.getbootstrap.com/). - Ask questions and explore [our GitHub Discussions](https://github.com/twbs/bootstrap/discussions). - Discuss, ask questions, and more on [the community Discord](https://discord.gg/bZUvakRU3M) or [Bootstrap subreddit](https://www.reddit.com/r/bootstrap/). - Chat with fellow Bootstrappers in IRC. On the `irc.libera.chat` server, in the `#bootstrap` channel. - Implementation help may be found at Stack Overflow (tagged [`bootstrap-5`](https://stackoverflow.com/questions/tagged/bootstrap-5)). - Developers should use the keyword `bootstrap` on packages which modify or add to the functionality of Bootstrap when distributing through [npm](https://www.npmjs.com/browse/keyword/bootstrap) 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](https://semver.org/). Sometimes we screw up, but we adhere to those rules whenever possible. See [the Releases section of our GitHub project](https://github.com/twbs/bootstrap/releases) for changelogs for each release version of Bootstrap. Release announcement posts on [the official Bootstrap blog](https://blog.getbootstrap.com/) contain summaries of the most noteworthy changes made in each release. ## Creators **Mark Otto** - - **Jacob Thornton** - - ## Thanks BrowserStack Thanks to [BrowserStack](https://www.browserstack.com/) for providing the infrastructure that allows us to test in real browsers! Netlify Thanks to [Netlify](https://www.netlify.com/) 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](https://opencollective.com/bootstrap#sponsor)] [![OC sponsor 0](https://opencollective.com/bootstrap/sponsor/0/avatar.svg)](https://opencollective.com/bootstrap/sponsor/0/website) [![OC sponsor 1](https://opencollective.com/bootstrap/sponsor/1/avatar.svg)](https://opencollective.com/bootstrap/sponsor/1/website) [![OC sponsor 2](https://opencollective.com/bootstrap/sponsor/2/avatar.svg)](https://opencollective.com/bootstrap/sponsor/2/website) [![OC sponsor 3](https://opencollective.com/bootstrap/sponsor/3/avatar.svg)](https://opencollective.com/bootstrap/sponsor/3/website) [![OC sponsor 4](https://opencollective.com/bootstrap/sponsor/4/avatar.svg)](https://opencollective.com/bootstrap/sponsor/4/website) [![OC sponsor 5](https://opencollective.com/bootstrap/sponsor/5/avatar.svg)](https://opencollective.com/bootstrap/sponsor/5/website) [![OC sponsor 6](https://opencollective.com/bootstrap/sponsor/6/avatar.svg)](https://opencollective.com/bootstrap/sponsor/6/website) [![OC sponsor 7](https://opencollective.com/bootstrap/sponsor/7/avatar.svg)](https://opencollective.com/bootstrap/sponsor/7/website) [![OC sponsor 8](https://opencollective.com/bootstrap/sponsor/8/avatar.svg)](https://opencollective.com/bootstrap/sponsor/8/website) [![OC sponsor 9](https://opencollective.com/bootstrap/sponsor/9/avatar.svg)](https://opencollective.com/bootstrap/sponsor/9/website) ## Backers Thank you to all our backers! 🙏 [[Become a backer](https://opencollective.com/bootstrap#backer)] [![Backers](https://opencollective.com/bootstrap/backers.svg?width=890)](https://opencollective.com/bootstrap#backers) ## Copyright and license Code and documentation copyright 2011-2025 the [Bootstrap Authors](https://github.com/twbs/bootstrap/graphs/contributors). Code released under the [MIT License](https://github.com/twbs/bootstrap/blob/main/LICENSE). Docs released under [Creative Commons](https://creativecommons.org/licenses/by/3.0/). --- _Source: https://npm.io/package/bootstrap · Machine-readable twin of the npm.io package page. Health data is recomputed on every publish._