Firebase Authentication

How to integrate Firebase Authentication with Webflow

Firebase Authentication transforms static Webflow sites into dynamic applications with secure user management. While Firebase doesn't offer an official Webflow app, you can leverage third-party solutions for quick setup, embed Firebase's SDK directly for custom authentication flows, or build advanced integrations using Firebase and Webflow APIs for complete control over user experiences and data synchronization.

Use third-party apps

Use the Vault Vision app to quickly add secure, no-code authentication to your Webflow site, leveraging Firebase Authentication. Vault Vision provides pre-built components for OAuth 2.0, OpenID Connect, and user profile management. For payment-based memberships, combine Vault Vision with Stripe. This method is ideal for designers and site owners seeking robust authentication without custom backend code.

Key features include:

• OAuth 2.0 and OpenID Connect support for enterprise-grade security

• Drag-and-drop authentication buttons that match your site's design

• User profile labels that automatically display logged-in user information

• CMS-filtered lists based on user authentication status

Implementation:

1. **Install *Vault Vision* from the Webflow App marketplace.** Open your Webflow project, go to the Apps panel, and install the Vault Vision app. Authorize required permissions to enable authentication features.

2. Configure Firebase Authentication integration. Follow the Vault Vision setup wizard to connect your Firebase Authentication project. Enter your Firebase API credentials as prompted to enable OAuth 2.0 and OpenID Connect support.

3. Add authentication components to your site. Drag-and-drop Vault Vision’s authentication buttons and user profile widgets onto your Webflow pages. Customize their appearance to match your site’s design.

4. Test and launch authentication. Publish your site and test the authentication flow (login, registration, and user profile display). Optionally, connect Stripe for payment-based memberships.

For payment-integrated authentication, combine Vault Vision with Stripe to create membership sites. The app handles authentication while you focus on design and content.

Use Code embeds and native features

Leverage Webflow's custom code features to embed Firebase Authentication for secure, flexible user login flows. This method covers SDK setup, authentication widget integration, custom form handling, and passwordless sign-in.

The process enables real-time authentication and advanced user management directly within your Webflow site.

FirebaseUI integration offers pre-styled authentication widgets. Add a container element in Webflow, then initialize FirebaseUI with your preferred sign-in methods. The widget automatically handles complex flows like account recovery and email verification.

Custom authentication forms provide complete design control. Create forms in Webflow, then use JavaScript to connect form submissions to Firebase Authentication methods. This approach requires more code but enables pixel-perfect designs that match your brand.

For passwordless authentication, implement email link sign-in by configuring action code settings and handling deep links. Users receive magic links via email, eliminating password management entirely.

Implementation:

1. Set up your Firebase project and obtain credentials. Create a Firebase project in the Firebase Console. Configure authentication providers (e.g., Email/Password, Google, etc.) and copy your project's configuration credentials (API key, Auth Domain, etc.) for later use.

2. Embed Firebase SDK scripts in Webflow. Navigate to Site Settings > Custom Code. Add the Firebase SDK scripts for 'firebase-app' and 'firebase-auth' in the Head Code section. Initialize Firebase with your project credentials using a custom JavaScript block.

3. Integrate authentication UI or custom forms. For quick setup, add a container element and initialize FirebaseUI for pre-styled authentication widgets. For custom designs, build forms in Webflow and connect them to Firebase Authentication using JavaScript event handlers.

4. Enable passwordless authentication (optional). Configure email link sign-in in Firebase Console. In your Webflow site, handle action code settings and deep links so users can authenticate via magic links sent to their email, removing the need for passwords.

Build with Webflow and Firebase APIs

API integration enables server-side user management, automated CMS synchronization, and enterprise security features. This approach suits teams needing custom workflows, multi-platform authentication, or integration with existing systems.

Firebase's REST API and Admin SDK enable secure server-side operations, while Webflow's Data API facilitates user data synchronization. Common implementations include membership platforms with tiered access, client dashboards with real-time data, and enterprise applications requiring single sign-on.

Create membership sites with CMS synchronization

Build robust subscription-based platforms by synchronizing Firebase Authentication user data with the Webflow CMS. This enables automated user management, dynamic content updates, and seamless membership experiences.

Implementation:

1. Set up a Firebase project and Admin SDK. Create a Firebase project and configure the Admin SDK on your backend server to manage users programmatically. Enable Authentication and set up your preferred sign-in methods.

2. Configure webhooks for authentication events. Set up webhooks or background functions to listen for Firebase Authentication events (e.g., user creation, deletion, subscription changes). This ensures real-time synchronization triggers.

3. **Sync user data with *Webflow CMS* via API** Use the Webflow Collections API to create, update, or delete CMS items based on authentication events. Map Firebase user fields to Webflow CMS fields for accurate data representation.

4. Test and monitor the integration. Thoroughly test the end-to-end workflow: register users, trigger events, and verify CMS updates. Set up logging and error monitoring to ensure reliability and maintain data integrity.

This enables features like member directories, personalized content based on subscription tiers, and automated access management.

Implement enterprise single sign-on

Enable enterprise SSO by integrating corporate identity providers (IdPs) with Firebase Authentication using SAML or OpenID Connect. This method covers provider configuration, secure authentication flow, user attribute mapping, and session management for seamless enterprise access.

Implementation:

1. Collect and prepare identity provider metadata. Obtain the IdP's Entity ID, SAML SSO URL, and public key certificate. Ensure your app's domain is authorized in the Firebase Console. Upgrade your Firebase project to support SAML/OIDC if required.

2. Configure SAML or OIDC provider in Firebase console. Add a new SAML or OIDC provider. Enter the IdP metadata (Entity ID, SSO URL, certificate) and your app's Entity ID. Save the configuration and note the generated provider ID.

3. Implement authentication flow in your app. Use Firebase SDK to initiate sign-in with the configured provider (e.g., signInWithRedirect or signInWithPopup). After authentication, handle the result with getRedirectResult or equivalent. For custom flows, use the REST API or Admin SDK to process SAML assertions and issue custom tokens.

4. Map user attributes and manage sessions. Extract user attributes from the IdP response and map them to your app's user model (e.g., Webflow CMS fields). Ensure proper session management and handle user provisioning or linking as needed.

The signInWithIdp endpoint processes federated authentication while maintaining security standards required by enterprise clients.

Build real-time dashboards

Create interactive dashboards by integrating Firebase's real-time data and authentication with Webflow's design tools. This method enables secure user sessions, dynamic content updates, and robust access control for personalized dashboard experiences.

Implementation:

1. Set up Firebase and integrate the SDK with Webflow. Create a Firebase project, configure Realtime Database or Firestore, and add Firebase SDK scripts to your Webflow site's custom code section. Initialize Firebase with your project credentials.

2. Authenticate users and establish secure sessions. Implement Firebase Authentication to securely log in users and manage session state. Support multiple auth providers (email, Google, etc.) as needed.

3. Fetch and display real-time, user-specific data. Use authenticated requests to retrieve user-specific data from Firebase. Inject dynamic content into Webflow templates using custom JavaScript for live updates.

4. Implement access control and security rules. Configure Firebase Security Rules to restrict data access, ensuring users only view authorized dashboard data. Test rules for compliance and privacy.

This pattern powers client portals, analytics dashboards, and collaborative applications where multiple users interact with shared data.

What you can build

Integrating Firebase Authentication with Webflow enables sophisticated user experiences previously requiring custom development teams.

• Membership and subscription sites: Create gated content areas with Firebase Authentication, managing access levels while Webflow CMS stores member profiles and subscription details, automatically syncing when users upgrade or cancel plans

• Client portals and dashboards: Build secure spaces where clients log in to view project updates, download files, or track deliverables, with Firebase handling authentication and Firestore storing client-specific data displayed through Webflow's design

• Educational platforms with progress tracking: Develop online courses where Firebase tracks user progress and completio,n while Webflow presents course content, with automatic certificate generation when students finish modules

• Multi-tenant SaaS applications: Design software interfaces in Webflow while Firebase manages user accounts, team permissions, and data isolation between different customer organizations