> For the complete documentation index, see [llms.txt](https://docs.maiagent.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.maiagent.ai/tech/en/lineliff/whatislineliff.md).

# What Is LINE LIFF?

### <mark style="color:blue;">The concept of LINE LIFF:</mark>

LINE LIFF (LINE Front-end Framework) is a web application framework provided by LINE that enables developers to build web applications within the LINE app.

With LIFF, developers can embed custom web applications in LINE chat windows and interact with users through various LINE features, such as accessing users' LINE information, sending messages, and sharing content.

### <mark style="color:blue;">LINE LIFF features:</mark>

* **Embedded web applications**

  Embed web pages in LINE so that users can open and use them directly in chats or other contexts.
* **Access to LINE features**

  Use the LIFF API to retrieve basic user information (such as the user's name and LINE User ID) or access LINE features such as sending messages and adding friends.
* **Cross-platform support**

  LIFF applications can be used on various devices, including mobile devices (iOS and Android) and desktop browsers, wherever LINE is supported.
* **Easy development and deployment**

  Developers only need to deploy a web application and register it on the LINE Developers platform to make it easily accessible to users through LINE.

### <mark style="color:blue;">**LINE LIFF use cases:**</mark>

* **Membership systems**
  * Connect membership data through LIFF so users can log in and link their LINE accounts with one click.
* **E-commerce**
  * Provide product listings and shopping cart features in chats, integrated with payment workflows.
* **Marketing campaigns**
  * Create interactive campaign pages, such as prize draws and surveys, that users can participate in and share with friends.
* **Customer service**
  * Embed inquiry systems or chatbot interactions to provide real-time responses.


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