generated: '2026-08-13'
method: searched
source: >-
  https://developers.line.biz/en/docs/liff/,
  https://developers.line.biz/en/docs/line-social-plugins/,
  https://developers.line.biz/en/docs/line-mini-app/ and the llms.txt index at
  https://developers.line.biz/llms.txt
description: >-
  Client-side and embeddable surfaces LINE publishes for running inside its own
  app or on a third-party website. These are distinct from the server SDKs in
  packages/ — they render UI or host an application rather than calling the
  API.
families:
  - family: LIFF (LINE Front-end Framework)
    description: >-
      A web application platform that runs inside the LINE client's in-app
      browser. A LIFF app can read the logged-in user's profile, obtain an ID
      token, send messages into the current chat, scan a code, and share
      target-picker messages — capabilities a plain web page cannot reach.
    docs: https://developers.line.biz/en/docs/liff/
    loader:
      cdn_edge: https://static.line-scdn.net/liff/edge/2/sdk.js
      cdn_pinned: https://static.line-scdn.net/liff/edge/versions/2.29.2/sdk.js
      npm: "@line/liff"
      version: 2.29.2
      published: '2026-07-30'
      note: >-
        The edge path floats to the latest v2 MINOR/PATCH automatically; the
        fixed path pins an exact version and must be bumped by hand.
    server_api: openapi/line-liff-openapi.yml
    tooling:
      - "@line/liff-mock — mocks LIFF APIs for local testing"
      - "@line/liff-inspector — DevTools for the LIFF WebView"
      - "@line/liff-cli — manage LIFF apps and serve one locally over HTTPS"
      - create-liff-app — project scaffolding
  - family: LINE MINI App
    description: >-
      A LIFF-based application distributed inside LINE with no download step,
      subject to a LINE review process before it can be published as a verified
      MINI App.
    docs: https://developers.line.biz/en/docs/line-mini-app/
    built_on: LIFF
  - family: LINE Social Plugins
    description: >-
      Drop-in buttons for third-party websites and blogs — Share, Like and Add
      friend — that connect a page to LINE without any server integration.
    docs: https://developers.line.biz/en/docs/line-social-plugins/
    release_notes: https://developers.line.biz/en/docs/line-social-plugins/resources/release-notes/
    components:
      - name: Share button
        purpose: Share the current page into a LINE chat.
      - name: Like button
        purpose: Like the page from LINE.
      - name: Add friend button
        purpose: Add the site's LINE Official Account as a friend.
  - family: LINE Login button
    description: >-
      Branded sign-in button and the LINE Login web/mobile flow rendered by
      LINE's own hosted authorization page at access.line.me.
    docs: https://developers.line.biz/en/docs/line-login/
    branding: https://developers.line.biz/en/docs/line-login/login-button/
  - family: Rich menu
    description: >-
      A server-configured, tappable UI surface rendered inside the LINE chat
      room beneath the input bar — an embedded interface owned by the API
      rather than by the developer's front end. Created, imaged, aliased and
      linked entirely through the Messaging API.
    docs: https://developers.line.biz/en/docs/messaging-api/using-rich-menus/
    backing_operations:
      - createRichMenu
      - setRichMenuImage
      - setDefaultRichMenu
      - linkRichMenuIdToUser
      - richMenuBatch
      - createRichMenuAlias
  - family: Flex Message
    description: >-
      A JSON-defined, declaratively laid-out message component rendered by the
      LINE client — bubbles and carousels composed of box/text/image/button
      components. Effectively a UI framework delivered over the messaging
      channel.
    docs: https://developers.line.biz/en/docs/messaging-api/using-flex-messages/
    simulator: https://developers.line.biz/flex-simulator/
    backing_operations:
      - replyMessage
      - pushMessage
      - broadcast
      - narrowcast
mobile_sdks:
  note: >-
    Native LINE Login SDKs are catalogued in packages/line-packages.yml under
    mobile_sdks — iOS (Swift), Android, Unity and Flutter.