# FirebaseUI

FirebaseUI is an open-source JavaScript library for Web that provides simple, customizable UI bindings on top of Firebase SDKs to eliminate boilerplate code and promote best practices.

Repository: https://github.com/firebase/firebaseui-web
Canonical: https://ross.abutalabs.com/products/firebaseui
Homepage: https://firebase.google.com/
Language: TypeScript
License: Apache-2.0
License Family: permissive
Last push: 2026-08-26T15:48:13+00:00
Link (homepage): https://firebase.google.com/

## Health v2 (maintenance only)
Score: 98/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 99, release rhythm 97, longevity 100
- inputs: {"age_days": 3766, "days_push": 7, "days_rel": 21, "gap_med": 14, "n_releases_24m": 6}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 4872, forks 1130 (observed 2026-08-28T04:09:01.665092+00:00)

## What it is
FirebaseUI is an open-source library providing pre-built, customizable UI components and bindings on top of Firebase SDKs for authentication flows across Web (React, Angular, Shadcn), Android, and iOS. It eliminates boilerplate for sign-in, sign-up, password reset, email link, phone auth, OAuth, and multi-factor authentication with built-in localization and framework-agnostic core packages.

## Use cases
- add sign-in and sign-up screens to a React app with Firebase Auth
- implement email/password, phone, and OAuth login without writing boilerplate
- build a forgot-password and email link verification flow
- add multi-factor authentication UI to a web app
- localize authentication screens into multiple languages
- customize authentication component behavior and styling with Tailwind or CSS

## When to choose
- you use Firebase Authentication and want ready-made, composable UI components
- you need cross-platform auth UI for Web, Android, and iOS from one ecosystem
- you want built-in localization and best-practice auth flows out of the box
- you prefer React, Angular, or Shadcn-based component libraries

## When to avoid
- you don't use Firebase as your backend auth provider
- you need fully custom, non-component-based auth flows
- you're not on a supported framework and don't want to use the framework-agnostic core
- you need a headless auth solution with no bundled UI

## Facets
- artifact type: library
- maturity: active
- function: auth, ui-components, frontend-framework, form-handling, internationalization
- domain: web-development, frontend, developer-tools, mobile-development
- platform: browser, cross-platform
- tags: firebase, authentication-ui, oauth, email-password-auth, phone-auth, multi-factor-authentication, react, angular, shadcn, tailwind, localization, sdk-bindings, web-server, nodejs, android, ios, typescript

## Member repositories
- firebase/firebaseui-web (main) score 98
- firebase/FirebaseUI-Android (sdk) score 72
- firebase/FirebaseUI-iOS (sdk) score 86
- firebase/firebaseui-web-react (sdk) score 62

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:09:01.665092+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T18:18:18.565734+00:00, confidence not recorded.
  - readme: https://github.com/firebase/firebaseui-web (fetched 2026-08-28T04:09:01.665092+00:00, sha 00d48ce0b365)
  - homepage: https://firebase.google.com/ (fetched 2026-08-29T09:01:18.432392+00:00, sha 75cb35a969a0)
- Data as of 2026-08-30T08:39:29.467469+00:00.