FirebaseUI for Web is a JavaScript library that provides pre-built, customizable authentication UI components for Firebase applications.
The library solves the problem of implementing authentication flows from scratch by offering composable components that handle common authentication patterns including email and password sign-up and sign-in, password recovery, email link authentication, phone authentication, OAuth providers, and multi-factor authentication. It wraps Firebase SDKs with UI bindings that eliminate boilerplate code while allowing developers to configure internal logic and behavior through a behaviors system. The library includes built-in localization support through translations.
FirebaseUI for Web supports React, Angular, and Shadcn, with a framework-agnostic core package available for developers who want to bring their own UI. The tool suits projects that need standard authentication flows without custom implementation. Developers migrating from the previous major version should consult the migration guide, as version 7 represents a complete rewrite to support modern languages and frameworks. The earlier version remains available in a separate branch for reference.
The project maintains active development with regular updates to its framework integrations and component library. The codebase is written in TypeScript, providing type safety for developers using the library. Documentation is comprehensive, covering setup instructions specific to each supported framework, styling customization, behavior configuration, and translation management. The project accepts contributions and maintains clear guidance for developers integrating it into their applications.
