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LINE API
LINE MINI App

LINE MINI App

LINE MINI App and LIFF（LINE Front-end Framework） are web application platforms provided by LY Corporation. Web applications that run on this platform are called LINE MINI apps or LIFF Apps.

Both are web applications that run on the LIFF browser implemented in the LINE app. If you incorporate the LIFF SDK provided by LY Corporation into your web application, it will work as a LINE MINI app or LIFF App.

Since the LINE MINI app and LIFF App can use commonly used web app development technologies, they can be combined with a variety of existing services to quickly provide new services.

LINE MINI App requires review and certification by LY Corporation.

These are the differences between the LINE MINI app and LIFF App.

	LINE MINI App	LIFF app
LY Corporation review and approval	Review and approval by LY Corporation is required. Once you pass the review, you can see the LINE MINI App in the search function and in the "Home" tab of the LINE app.	Review and approval by LY Corporation isn't required. You can release it at any time.
LINE MINI App Notice chat room	You can use the LINE MINI App Notice chat room, which is available to all LINE MINI Apps.	Not available.

LINE Mini App	LIFF app
LY Corporation review and approval
Review and approval by LY Corporation is required. Once you pass the review, you can see the LINE MINI App in the search function and in the "Home" tab of the LINE app.	Review and approval by LY Corporation isn't required. You can release it at any time.
LINE MINI App Notice chat room
You can use the LINE MINI App Notice chat room, which is available to all LINE MINI Apps.	Not available.

End-user benefits

Available without installation (LINE MINI App / LIFF)

End users don't need to install the LINE MINI App/LIFF on their smartphone.

Save yourself the trouble of downloading and installing the app, and start using it right on the LINE app.

Rich UI available (LINE MINI App / LIFF)

The LINE MINI App and LIFF lets you use the service smoothly with a rich UI that isn't provided by LINE's chat room or Messaging API.

For example, while displaying a map, you can use a rich UI that lets you simultaneously show pins and their related information on the map.

Use safe and secure apps (LINE MINI App)

Only LINE's approved LINE MINI Apps are available on LINE, so you can use LINE MINI App with peace of mind.

End-users can find the LINE MINI App in the search function and in the "Home" tab of the LINE app.

Service provider benefits

Profile information of LINE users can be obtained (LINE MINI App / LIFF)

You can get profile information of LINE users (user ID to distinguish users in LINE MINI App / LIFF, any display name registered by users, etc.).

By using an ID token or access token, you can securely send LINE user profile information from the LINE MINI App / LIFF (client) to the server.

Users can share the app with their friends (LINE MINI App / LIFF)

You can easily share the LINE MINI App with your friends just by using the default share button, which doesn't require additional implementation.

If you want to provide a better UX, you can create a custom share message using the share target picker to let friends share additional information.

Service Message notification (LINE MINI App)

Another great feature of the LINE MINI App is the release of the LINE MINI App Notice chat room.

The LINE MINI App Notice chat room is a chat room that can be used by LINE MINI Apps. You can send messages that meet certain conditions to the LINE MINI App Notice chat room, such as sending a confirmation notice for a restaurant or accommodation reservation to a user.

The LINE MINI App Notice chat room can help reduce the likelihood that end users will miss important messages sent from the service.

Diagram

User authentication

User authentication occurs between the LINE platform and the end user when LINE MINI App and LIFF are initialized.

Once the user authentication is complete, the service can get an access token. Use the access token to identify the user.

Operates as a web app

After LIFF is initialized and user authentication is complete, it will begin to operate as a web app. Display the UI directly to, and handle requests from, the end user.

Send Service Messages

When sending service messages with the LINE MINI App, you can use the API to send the service message.

If the API is successful, the LINE platform will send the message to the end user's LINE MINI App Notice chat room.

View the demo

You can view the demo on your smartphone by scanning the QR code to access the demo site. You can view the demo by tapping the “Go to Demo Screen” button below on your smartphone.

Before using, please note that the demo app will retrieve your LINE account's profile information (display name, profile image URL, and user ID), but only the user ID will be stored on the server and it will be deleted every day.

Business card

LINE Official Account: LINE Use Case-LIFF