• Messaging API
  • Rich menu
  • Imagemap message

Property for accessibility released

Now you can specify text to be spoken using the label property for imagemap messages and rich menus when the accessibility feature is enabled on the client device. This feature is supported on LINE iOS version 8.2.0 and later.

For more information, see the updated reference documentation below.


Introducing the Community site for developers

We are excited to introduce our new Community site added to the LINE Developers site.

Community site

You can find knowledge and examples from our developer community on the Community site, including expert tips from third-party developers and information about how to create attractive applications using the LINE APIs. Currently, the site has a Bot Directory, a showcase of chatbots available on the LINE app, and a Q&A section for development techniques.

Bot Directory and Q&A

  • Messaging API
  • Template messages

New properties for template messages and postback actions released

Default actions can now be set for template messages

The defaultAction property has been added to the column object for buttons and carousel template messages. As a result, you can indicate a single action to be executed when a user taps anywhere in the image, title, or text area.

For more information, see the updated reference documentation below.

displayText property for postback actions released

We have released the displayText property and have deprecated the text property for postback actions. We recommend using displayText instead of the text property. Note that the dislayText and text properties cannot both be used at the same time.

For more information, see the Postback action reference documentation.

  • Android

LINE SDK for Android 4.0.7 released

The LINE SDK for Android version 4.0.7 has been released. You can download the SDK from the following page.


  • Fixed a crash that occurs if the user exits the LINE app using the home button and then opens the SDK app before the LINE app finishes the authentication process.

We will continue to provide improvements so that you can code more easily.

  • LINE API Expert

Let us announce the LINE API experts of the first quarter of 2018

LINE API Expert is a program that recognizes skilled engineers who have a deep understanding of the APIs provided by LINE and are influential in the community by giving them the title of "LINE API experts". In addition to providing an array of benefits, LINE will also support the various activities of these LINE API experts through this program.

The LINE API expert program was introduced at the LINE DEVELOPER DAY, September last year and a lot of engineers have applied through the LINE Developers site. Our internal review committee reviewed each item with a strict standard and came up with the final result. Please check the detail on the Expert List page or LINE Engineering Blog.

We look forward to see the selected members to actively engage in the developer community through meetups, online forum, SNS or blogs, and other means. LINE will be opened to the range of activities and will support their moves with all means.

For the Q1, a total of 22 qualified engineers have been selected from four Asia countries, including Japan.


Hirotada Kobayashi, Nobisuke Sugawara, Hiroyuki Hiki, Naohiro Fujie, Masao Wakasa


Caeser Chi, Cheng-Lung Sung, David Tung, Kuan-Hung Kuo, Richard Lee, Will Huang, Wolke Lin


Annop Kobkij, Suphakit Annoppornchai, Teerachart Kortrakul, Winn Voravuthikunchai


David Su, Habibi Mustafa, M Gilang Januar, Michelle Neysa, Nur Rohman, Soesapto Joeni Hantoro

  • iOS

LINE SDK for iOS 4.1.0 released

The LINE SDK for iOS version 4.1.0 has been released. You can download the SDK from the following page.


  • The web login process now uses a Safari View Controller instead of an external browser.

We will continue to provide improvements so that developers can code more easily.

  • Messaging API
  • Docs

Community SDK section released

We have released a community SDK section to our Messaging API SDKs page with Messaging API SDKs developed by our developer community. We currently have a C# (.NET) SDK and are looking to add more resources.

If you have developed a SDK or library for the Messaging API, see our Community contribution guidelines for information on how to submit your project to us for review.

  • Docs

Introducing our feedback form

In order to improve the quality of our documentation and products, we've added a feedback form to our documentation pages. If you would like to report any bugs in our documentation or would like to leave any suggestions, click the "Leave feedback" button on the bottom of our documentation pages and complete the form.

We greatly appreciate your feedback and we are committed to improving your experience using our developer products.

Feedback form

  • Outage report
  • LINE Platform

Notice about service outage for LINE Login and the Messaging API (resolved)

We'd like to inform you about a service outage regarding our Messaging API and LINE Login products. The issue has now been resolved but we sincerely apologize for any inconvenience that this may have caused.

Date and time of outage

Date: December 14, 2017
Time: 16:40–17:08 JST (GMT+9)

Cause of the outage

Issue with our servers.


  1. Requests and responses (Messaging API and LINE Login) that contained user IDs either failed or returned incorrect user IDs.
  2. Webhooks for the Messaging API did not return correct user IDs.
  3. Push message requests with specified user IDs failed.

We will continue to improve the quality of the services we provide to our developers and we greatly appreciate your understanding.

  • Docs
  • Messaging API

New article on sharing bots

We've added a new article on how you can gain more friends and expand the reach of your bot. For example, you can use a QR code, add an "Add friend" button, or link your bot with a LINE Login channel.

Check out the article at Sharing your bot with users.