How to build Azure AD sign-in with Webflow

For our new friends:

Logto is an Auth0 alternative designed for modern apps and SaaS products. It offers both Cloud and Open-source services to help you quickly launch your identity and management (IAM) system. Enjoy authentication, authorization, and multi-tenant management all in one.

We recommend starting with a free development tenant on Logto Cloud. This allows you to explore all the features easily.

In this article, we will go through the steps to quickly build the Azure AD sign-in experience (user authentication) with Webflow and Logto.

Prerequisites

A running Logto instance. Check out the introduction page to get started.
Basic knowledge of Webflow.
A usable Azure AD account.

Create an application in Logto

Logto is based on OpenID Connect (OIDC) authentication and OAuth 2.0 authorization. It supports federated identity management across multiple applications, commonly called Single Sign-On (SSO).

To create your Single page app application, simply follow these steps:

Open the Logto Console. In the "Get started" section, click the "View all" link to open the application frameworks list. Alternatively, you can navigate to Logto Console > Applications, and click the "Create application" button.
In the opening modal, click the "Single page app" section or filter all the available "Single page app" frameworks using the quick filter checkboxes on the left. Click the "Webflow" framework card to start creating your application.
Enter the application name, e.g., "Bookstore," and click "Create application".

🎉 Ta-da! You just created your first application in Logto. You'll see a congrats page which includes a detailed integration guide. Follow the guide to see what the experience will be in your application.

Integrate Webflow with Logto

astuce:

The sample project is available at Webflow project preview.

Init Logto Provider

remarque:

In the following steps, we assume your Webflow site is running on https://your-awesome-site.webflow.io.

In this step, we'll add global-level custom code to your Webflow site. Since NPM is not supported in Webflow, we'll use the jsdelivr.com CDN service to import the Logto SDK.

Open the "Site settings" page, and navigate to the "Custom code" section. Add the following code to the "Head code" section.

<script type="module">
  // Import \`@logto/browser\` SDK from the jsdelivr CDN
  import LogtoClient from 'https://esm.run/@logto/browser';

  // Assign the \`logtoClient\` instance to window object,
  // enabling global usage in other pages
  window.logtoClient = new LogtoClient({
    endpoint: '<your-logto-endpoint>', // E.g. http://localhost:3001
    appId: '<your-application-id>',
  });
</script>

Before we dive into the details, here's a quick overview of the end-user experience. The sign-in process can be simplified as follows:

Your app invokes the sign-in method.
The user is redirected to the Logto sign-in page. For native apps, the system browser is opened.
The user signs in and is redirected back to your app (configured as the redirect URI).

This authentication process follows the OpenID Connect (OIDC) protocol, and Logto enforces strict security measures to protect user sign-in.
If you have multiple apps, you can use the same identity provider (Logto). Once the user signs in to one app, Logto will automatically complete the sign-in process when the user accesses another app.

To learn more about the rationale and benefits of redirect-based sign-in, see Logto sign-in experience explained.

Let's switch to the Application details page of Logto Console. Add a Redirect URI https://your-awesome-site.webflow.io/callback and click "Save changes".

Return to your Webflow designer, drag and drop a "Sign in" button to the home page, and assign it an ID “sign-in” for later reference using getElementById().

<script type="module">
  const signInButton = document.getElementById('sign-in');
  const onClickSignIn = () => logtoClient.signIn('https://your-awesome-site.webflow.io/callback');
  signInButton.addEventListener('click', onClickSignIn);
</script>

Handle redirect

We're almost there! In the last step, we use https://your-awesome-site.webflow.io/callback as the Redirect URI, and now we need to handle it properly.

First let's create a "Callback" page in Webflow, and simply put some static text "Redirecting..." on it. Then add the following page-level custom code to "Callback" page.

<script type="module">
  (async () => {
    // Handle sign-in callback logic by calling the SDK method
    await logtoClient.handleSignInCallback(window.location.href);

    // Redirect back to the home page when the handling is done
    window.location.assign('https://your-awesome-site.webflow.io');
  })();
</script>

Implement sign-out

Calling .signOut() will clear all the Logto data in memory and localStorage if they exist.

After signing out, it'll be great to redirect your user back to your website. Let's add https://your-awesome-site.webflow.io as one of the Post Sign-out URIs in Admin Console (shows under Redirect URIs), and use the URL as the parameter when calling .signOut().

Implement a sign-out button

Return to the Webflow designer, and add a “Sign out” button on your home page. Similarly, assign an ID “sign-out” to the button, and add the following code to the page-level custom code.

const signOutButton = document.getElementById('sign-out');
const onClickSignOut = () => logtoClient.signOut('https://your-awesome-site.webflow.io');
signOutButton.addEventListener('click', onClickSignOut);

Handle authentication status

In Logto SDK, generally we can use logtoClient.isAuthenticated() method to check the authentication status, if the user is signed in, the value will be true; otherwise, it will be false.

In your Webflow site, you can also use it to programmatically show and hide the sign-in and sign-out buttons. Apply the following custom code to adjust button CSS accordingly.

const isAuthenticated = await logtoClient.isAuthenticated();

signInButton.style.display = isAuthenticated ? 'none' : 'block';
signOutButton.style.display = isAuthenticated ? 'block' : 'none';

Checkpoint: Test your Webflow site

Now, test your site:

Deploy and visit your site URL, the sign-in button should be visible.
Click the sign-in button, the SDK will initiate the sign-in process, redirecting you to the Logto sign-in page.
After signing in, you will be redirected back to your site, seeing the username and the sign-out button.
Click the sign-out button to sign-out.

Add Azure AD connector

To enable quick sign-in and improve user conversion, connect with Webflow as an identity provider. The Logto social connector helps you establish this connection in minutes by allowing several parameter inputs.

To add a social connector, simply follow these steps:

Navigate to Console > Connectors > Social Connectors.
Click "Add social connector" and select "Azure AD".
Follow the README guide and complete required fields and customize settings.

remarque:

If you are following the in-place Connector guide, you can skip the next section.

Set up Azure AD

Set up Microsoft Azure AD in the Azure Portal

Visit the Azure Portal and sign in with your Azure account. You need to have an active subscription to access Microsoft Azure AD.
Click the Azure Active Directory from the services they offer, and click the App Registrations from the left menu.
Click New Registration at the top, enter a description, select your access type and add your Redirect URI, which will redirect the user to the application after logging in. In our case, this will be ${your_logto_endpoint}/callback/${connector_id}. e.g. https://foo.logto.app/callback/${connector_id}. The connector_id can be also found on the top bar of the Logto Admin Console connector details page. You can copy the Callback URI in the configuration section.
Select Web as Platform.

Fill in the configuration in Logto

Name	Type
clientId	string
clientSecret	string
tenantId	string
cloudInstance	string

Client ID

You may find the Application (client) ID in the Overview section of your newly created application in the Azure Portal.

Client Secret

In your newly created application, click the Certificates & Secrets to get a client secret, and click the New client secret from the top.
Enter a description and an expiration.
This will only show your client secret once. Fill the value to the Logto connector configuration and save it to a secure location.

Cloud Instance

Usually, it is https://login.microsoftonline.com/. See Azure AD authentication endpoints for more information.

Tenant ID

Logto will use this field to construct the authorization endpoints. This value is dependent on the access type you selected when creating the application in the Azure Portal.

If you select Accounts in this organizational directory only for access type then you need to enter your {TenantID}. You can find the tenant ID in the Overview section of your Azure Active Directory.
If you select Accounts in any organizational directory for access type then you need to enter organizations.
If you select Accounts in any organizational directory or personal Microsoft accounts for access type then you need to enter common.
If you select Personal Microsoft accounts only for access type then you need to enter consumers.

Save your configuration

Double check you have filled out necessary values in the Logto connector configuration area. Click "Save and Done" (or "Save changes") and the Azure AD connector should be available now.

Once you create a social connector successfully, you can enable it as a "Continue with Azure AD" button in Sign-in Experience.

Navigate to Console > Sign-in experience > Sign-up and sign-in.
(Optional) Choose "Not applicable" for sign-up identifier if you need social login only.
Add configured Azure AD connector to the "Social sign-in" section.

Testing and Validation

Return to your Webflow app. You should now be able to sign in with Azure AD. Enjoy!

Create an application in Logto​

Integrate Webflow with Logto​

Init Logto Provider​

Implement sign-in​

Regarding redirect-based sign-in​

Configure sign-in redirect URI​

Implement a sign-in button​

Handle redirect​

Implement sign-out​

Implement a sign-out button​

Handle authentication status​

Checkpoint: Test your Webflow site​

Add Azure AD connector​

Set up Azure AD​

Set up Microsoft Azure AD in the Azure Portal​

Fill in the configuration in Logto​

Client ID​

Client Secret​

Cloud Instance​

Tenant ID​

Save your configuration​

Enable Azure AD connector in Sign-in Experience​

Testing and Validation​

Further readings​