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5.7.0 • Public • Published


Server side rendered version of this documentation available here served with Angular universal and nest.js

Best way to quickly integrate Bootstrap 3 or Bootstrap 4 Components with Angular

npm version npm downloads


Table of contents

  1. Getting Started
  2. Supporting
  3. Installation instructions
  4. Usage & Demo
  5. API
  6. Compatibility
  7. Troubleshooting
  8. Contributing

Getting Started

ngx-bootstrap contains all core (and not only) Bootstrap components powered by Angular. So you don't need to include original JS components, but we are using markup and CSS provided by Bootstrap.

Supporting NGX-Bootstrap

ngx-bootstrap is an Open Source (MIT Licensed) project, it's an independent project with ongoing development made possible thanks to the support of our awesome backers. If you also would like to show support or simply give back to Open Source community, please consider becoming a backer sponsor of ngx-bootstrap on OpenCollective.

All donated funds are managed transparently on OpenCollective and will be used solely for compensating work and expenses for contributors. Valor Software employees and contractors are not eligible to use these funds.

What's there for you? Proper recognition and exposure of your name/logo/website on our page. Our main sponsors will be presented under this section! Be the first!

Installation instructions

Method 1

Install ngx-bootstrap from npm:

npm install ngx-bootstrap --save

Add needed package to NgModule imports:

import { TooltipModule } from 'ngx-bootstrap/tooltip';

  imports: [TooltipModule.forRoot(),...]

Add component to your page:

<button type="button" class="btn btn-primary"
        tooltip="Vivamus sagittis lacus vel augue laoreet rutrum faucibus.">
  Simple demo

You will need bootstrap styles:

  • Bootstrap 3
<!-- index.html -->
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
  • Bootstrap 4
<!--- index.html -->
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" rel="stylesheet">
Method 2

Use the Angular CLI ng add command for updating your Angular project.

ng add ngx-bootstrap

Or use ng add to add needed component (for example tooltip).

ng add ngx-bootstrap --component tooltip

Add component to your page:

<button type="button" class="btn btn-primary"
        tooltip="Vivamus sagittis lacus vel augue laoreet rutrum faucibus.">
  Simple demo

Setting up the bootstrap version manually

Sometimes, your project might contain some library that could interfere with the bootstrap framework, or you might have a customized version of bootstrap. The consequence is that the process of determining bootstrap version might be failed, which can break the UI. In that case, we can still set the bootstrap version manually in the bootstrapping component (i.e. AppComponent):

import { setTheme } from 'ngx-bootstrap/utils';

export class AppComponent {
  constructor() {
    setTheme('bs3'); // or 'bs4'

Usage & Demo

Main source of API documentation and usage scenarios available here: https://valor-software.com/ngx-bootstrap/.

Additionally you can find demos and docs deployed from latest code with angular@latest and angular@next.

Server side rendered version of this documentation available here served with Angular universal and nest.js.


Check demo page for API reference.

How to use it with:

How to build lib for development

First time:

  • clone repository
  • npm install
  • npm run build

To update your fork and prepare it for local usage:

  • git pull upstream development
  • rm -rf node_modules
  • npm install
  • npm run build

To run the demo:

  • npm run demo.serve // to serve local demo. This is for testing only, without watchers.

For local development run:

  • npm run build.watch // in first terminal
  • ng serve // in second

If you want to run the demo with Angular Universal:

  • npm run demo.serve-universal


The only two dependencies are Angular and Bootstrap CSS. Here is the versions compatibility list:

ngx-bootstrap Angular Bootstrap CSS
5.x.x 7.x.x - 8.x.x 3.x.x or 4.x.x
4.x.x 6.x.x - 7.x.x 3.x.x or 4.x.x
3.x.x 6.x.x - 7.x.x 3.x.x or 4.x.x
2.x.x 2.x.x - 4.x.x 3.x.x or 4.x.x
1.x.x 2.x.x 3.x.x or 4.x.x


So if you are in trouble, here's where you can look for help.

The best place to ask questions is on StackOverflow (under the ngx-bootstrap tag) You can also join our Slack channel and link your stackoverflow question there. But try to avoid asking generic help questions directly on Slack since they can easily get lost in the chat. You can also search among the existing GitHub issues.

If, and only if, none of the above helped, please open a new issue.


All contributions very welcome! And remember, contribution is not only PRs and code, but any help with docs or helping other developers to solve issues are very appreciated! Thanks in advance!

Please read our contribution guidelines.

If you need more modules, check here

Please read central ngx modules readme for details, plans and approach.


Crossbrowser testing sponsored by Saucelabs Saucelabs

End-to-end testing sponsored by Cypress Cypress



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