We'd like to inform you about a service outage regarding the Messaging API. The issue has now been resolved. We sincerely apologize for any inconvenience that this may have caused.

Date and time of outage

September 15, 2026 around 23:58 - September 16, 2026 around 3:43 (UTC+9)

Cause of the outage

Network failure

Impact

• All Messaging API endpoints
• Send a LINE notification message (flexible) (Options for corporate customers)
• Send a LINE notification message (template) (Options for corporate customers)

Details

During the stated date and time, some requests weren't processed properly, resulting in errors with status code 5xx.

Retrying a failed API request

In some APIs, you can safely retry a request while preventing the same request from being accepted in duplicate by using a retry key (X-Line-Retry-Key) when an error with status code 5xx occurs or when the request times out.

For more information, see Retry failed API requests and Specify the retry key always in the Messaging API documentation.

We'll continue to improve the quality of our services to prevent future outages. Thank you for your understanding.

Due to a technical issue, we've temporarily suspended part of the feature for using multiple LINE Official Accounts with the add friend option in LINE MINI Apps.

We sincerely apologize for any inconvenience that this may cause.

Temporarily suspended feature

The feature to switch the LINE Official Account displayed on the channel consent screen

Impact

While the feature is suspended, adding the prompt_bot_id query parameter to a LIFF URL or permanent link won't switch the LINE Official Account displayed on the channel consent screen to the specified account.

You can continue to use the features to switch the LINE Official Account displayed on the verification screen and to switch the LINE Official Account displayed in the subwindow that prompts users to add or unblock the account.

Resumption date

The resumption date hasn't yet been determined. We'll update this news article once the date is determined.

We sincerely apologize again for any inconvenience this may cause.

LINE MINI App Policy will be revised on October 14, 2026.

Scheduled date of revision

October 14, 2026

The content and date are subject to change.

Details of revision

• Clarification of the conditions for serving ads within LINE MINI Apps
• Other formatting-related updates

The differences between before and after the revision are as follows:

Background of the revision

To improve the safety of ads served within LINE MINI Apps and prevent fraudulent or malicious ads, we'll clarify that, in principle, LY Ads Network is the only ad network platform that can be used.

We'll also clarify the rules that apply to ads served through LY Ads Network, ads placed directly by service providers, and direct-sold ads served under contracts with advertisers.

We'll continue our efforts to provide an environment where users can use LINE MINI Apps safely and securely. Thank you for your understanding.

In Japan, the Apps tab in LINE features a section called "Daily top trends". In addition to rankings, this section includes multiple categories such as "Restaurants" and "Games", displaying the names of LINE MINI Apps along with a short description for each app.

Starting September 10, 2026, AI will be used to set categories and generate descriptions for LINE MINI Apps, and these updates will be reflected sequentially.

Effective date

From September 10, 2026 onward

Details

Based on the content of "Channel description" entered by developers for each LINE MINI App channel, AI will be used to automatically assign categories and generate descriptions. If a description for the LINE MINI App was already set on or before September 9, 2026, it will be excluded from this AI-generated update.

Only verified MINI Apps are displayed in the "Daily top trends".

Display example

Here is a display example of "Daily top trends".

1. Category: AI determines and sets the category that the LINE MINI App belongs to.
2. LINE MINI App name: Displays the Channel name of the LINE MINI App channel.
3. LINE MINI App description: AI generates descriptions (the maximum character limit is 21 full-width characters for Japanese, or 42 half-width alphanumeric characters).

Request to developers

Developers don't need to make any additional settings to enable AI description generation and category assignment.

However, descriptions and categories are generated and set based on the content entered in the Channel description field under the Basic settings tab of the relevant LINE MINI App channel. Therefore, enter the app description specifically and clearly in the Channel description field.

For more information, see Channel description in the LINE MINI App documentation.

You can now use multiple LINE Official Accounts with the add friend option in LINE MINI Apps.

With this feature, you can display an appropriate LINE Official Account to add as a friend based on the user's situation, from the LINE Official Accounts added in the allowlist (*) in advance.

* A list of LINE Official Accounts that can be displayed on the verification screen, channel consent screen, and other screens.

Requirements for using multiple LINE Official Accounts

To use multiple LINE Official Accounts with the add friend option, in addition to the requirements for the add friend option, Region to provide the service for the LINE MINI App channel must be set to "Japan".

How to use multiple LINE Official Accounts

To use multiple LINE Official Accounts with the add friend option, configure and implement the feature as follows:

1. Configure the feature to use multiple LINE Official Accounts in the LINE Developers Console
2. Switch the LINE Official Account that users are prompted to add as a friend in the LINE MINI App

For more information, see Use multiple LINE Official Accounts with the add friend option in the LINE MINI App documentation.

We are planning to revise the rates for additional messages (messages sent beyond the limit of free messages) for LINE Official Accounts in Japan on October 1, 2026.

For more information, see Important: Notice of rate changes for additional messages on LINE Official Accounts (only available in Japanese) in LY for Business.

We've released LIFF v2.31.0.

In LIFF v2.31.0, we've made changes to the internal behavior of the LIFF SDK. There is no change in features.

How to update to LIFF v2.31.0

If you're using the CDN edge path (https://static.line-scdn.net/liff/edge/2/sdk.js), you'll automatically update LIFF to v2.31.0.

If you're using an npm package, you can update to v2.31.0 by executing either npm install @line/liff@2.31.0 or yarn add @line/liff@2.31.0.

For more information on integrating the LIFF SDK, see Integrating the LIFF SDK with the LIFF app in the LIFF documentation.

Starting with LIFF v2.31.1, scheduled for release on October 7, 2026, we will change how the ? character is handled in query parameter values included in a LIFF URL. As a result, the secondary redirect URL generated when accessing a LIFF URL may change.

Scheduled date of change

October 7, 2026

Affected versions

LIFF v2.31.1 or later

Changes

When a user accesses a LIFF URL, the LIFF app first navigates to the primary redirect URL and then to the secondary redirect URL. Starting with LIFF v2.31.1, we will change part of the implementation used in the LIFF browser to restore query parameter values in the LIFF URL to the secondary redirect URL. As shown in the examples below, ? characters in query parameter values will no longer be replaced with &.

This change applies when a LIFF app is opened in the LIFF browser. The behavior will not change when a LIFF app is opened in an external browser.

Examples

For example, suppose that the LIFF app's endpoint URL is https://example.com and a user accesses https://liff.line.me/{liffId}/?key=foo?bar. The secondary redirect URL before and after the change will be as follows:

When accessing a LIFF URL such as https://liff.line.me/{liffId}/?key=foo%3Fbar with the ? character in a query parameter value percent-encoded, the LIFF app may be affected depending on how the URL is accessed. For the behavior before and after the change for each method of opening the LIFF app in the LIFF browser, see the table below:

Notes on the specification change

If your LIFF app uses query parameters whose values are URLs, it may be affected by this change when opened in the LIFF browser (e.g. if return_url contains the URL of the page from which the user navigated). Even if you percent-encode the query parameter values, the LIFF app may be affected depending on how the LIFF URL is accessed.

If your LIFF app relies on the behavior before the change, it may not function correctly after the change is applied. We recommend implementing your LIFF app to ensure it works correctly both before and after the change.

We will continue to work to further improve our services to our customers. Thank you for your understanding.

As of August 26, 2026, the authorization flow for verified MINI Apps in Japan with the "Channel consent simplification" feature enabled has changed.

Previously, when the "Channel consent simplification" feature was enabled, the simplification consent screen or the loading screen was displayed when users accessed a LINE MINI App for the first time. Now, these screens will no longer be displayed, allowing users to open LINE MINI Apps more smoothly.

Before change	After change (current)

For more information about the "Channel consent simplification" feature, see LINE MINI App authorization flow in the LINE MINI App documentation.

We will continue to work to further improve our service to our customers. Thank you for your understanding.

We have discontinued the feature that displays the Home icons for the Add friend and Like buttons in LINE Social Plugins.

Previously, users could navigate to the LINE Official Account's LINE VOOM account page via the Home icon, but since LINE VOOM is scheduled to be discontinued, we have ended support for the Home icon.

Button	Before the change	After the change (current)
Add friend button	You could display the Add friend button, the number of friends, and the Home icon.	The option to include the Home icon is no longer selectable when creating a button. In addition, the Home icon is no longer displayed on existing buttons where it was previously shown.
Like button	When the Like button and Add friend button were displayed together, users who had already added your LINE Official Account as a friend saw the Home icon.	The Home icon does not appear, and the Add friend button is always displayed.

For more information on the discontinuation of LINE VOOM, see the following notices:

• For Japan: 「LINE VOOM」サービス終了のお知らせ
• For Taiwan: LINE VOOM 服務終止通知
• For Thailand: ประกาศยุติการให้บริการ “LINE VOOM” ในประเทศไทย

In addition, due to this change, we have removed the references to LINE VOOM from the Usage Guidelines for the LINE Social Plugin.

We will continue to work to further improve our service to our customers. Thank you for your understanding.

We've released LIFF v2.30.0.

In LIFF v2.30.0, we've added the following feature.

Ahead of the release of a new feature for the LINE MINI App's add friend option, you can now pass arguments to some methods

We plan to introduce a feature that allows multiple LINE Official Accounts to be linked in the add friend option for LINE MINI Apps. Ahead of this release, you can now pass arguments to the following three methods:

• liff.permission.requestAll()
• liff.getFriendship()
• liff.requestFriendship()

The arguments for these methods are available only when Use multiple accounts is enabled for the LINE MINI App channel. Use multiple accounts is scheduled to be available for LINE MINI Apps in Japan in September 2026.

How to update to LIFF v2.30.0

If you're using the CDN edge path (https://static.line-scdn.net/liff/edge/2/sdk.js), you'll automatically update LIFF to v2.30.0.

If you're using an npm package, you can update to v2.30.0 by executing either npm install @line/liff@2.30.0 or yarn add @line/liff@2.30.0.

For more information on integrating the LIFF SDK, see Integrating the LIFF SDK with the LIFF app in the LIFF documentation.

When you send a request to a Messaging API endpoint, specify the correct endpoint shown in the Messaging API reference. If you don't specify the correct endpoint, for example by adding an unnecessary trailing slash (/) to the end of the endpoint path, the behavior isn't guaranteed.

Users can now edit messages in group chats with a LINE Official Account. We've added a new edit event (messageEdited) to the webhook event objects in the Messaging API.

Background on adding the edit event

The message editing feature has been released in LINE Labs (only available in Japanese), and users can now edit text messages they've already sent in group chats with a LINE Official Account.

When a user edits a text message in a group chat with a LINE Official Account, the LINE Platform sends an edit event to the bot server specified in the Webhook URL in the LINE Developers Console.

The edit event includes a reply token (replyToken), allowing your LINE Official Account to reply to the edited message.

LINE Messaging API SDK updates

For more information about the update status of each SDK release in line with the addition of these new features, see the LINE Messaging API SDKs release notes.

We'd like to inform you about a service outage regarding the Messaging API. The issue has now been resolved. We sincerely apologize for any inconvenience that this may have caused.

Date and time of outage

August 4, 2026 around 16:11 - around 16:41 (UTC+9)

Cause of the outage

Server failure

Impact

• Get profile
• Mark messages from users as read (Options for corporate customers)

Details

During the stated date and time, some requests weren't processed properly, resulting in errors with status code 5xx.

We'll continue to improve the quality of our services to prevent future outages. Thank you for your understanding.

We've released LIFF v2.29.2.

In LIFF v2.29.2, we've made changes to the internal behavior of the LIFF SDK. There is no change in features.

How to update to LIFF v2.29.2

If you're using the CDN edge path (https://static.line-scdn.net/liff/edge/2/sdk.js), you'll automatically update LIFF to v2.29.2.

If you're using an npm package, you can update to v2.29.2 by executing either npm install @line/liff@2.29.2 or yarn add @line/liff@2.29.2.

For more information on integrating the LIFF SDK, see Integrating the LIFF SDK with the LIFF app in the LIFF documentation.

We'd like to inform you about a service outage regarding the LINE Platform. The issue has now been resolved. We sincerely apologize for any inconvenience that this may have caused.

Date and time of outage

July 28, 2026 around 16:46 - around 21:11 (UTC+9)

Cause of the outage

Server failure

Impact

• Messaging API
• LINE Login
• LIFF/LINE MINI App
• LINE Developers Console
• LINE notification messages

Details

These are the main impacts per product:

• Messaging API
• LINE Login
• LIFF/LINE MINI App
• LINE Developers Console
• LINE notification messages

Messaging API

• There were instances where sending webhook events was delayed or didn't work properly.
• Some requests weren't processed properly, resulting in errors with status code 5xx.

LINE Login

There were instances where adding a LINE Official Account as a friend or unblocking it using the add friend option didn't work properly.

LIFF/LINE MINI App

• There were instances where adding a LINE Official Account as a friend or unblocking it using the add friend option or the liff.requestFriendship() method didn't work properly.
• There were instances where service messages were delayed or weren't sent properly.

LINE Developers Console

There were instances where channel settings couldn't be changed properly.

LINE notification messages

• There were instances where sending webhook events (delivery completion events) was delayed or didn't work properly.
• Some requests weren't processed properly, resulting in errors with status code 5xx.
• There were instances where messages weren't sent even after users configured their LINE notification message reception settings or completed SMS authentication and became eligible to receive LINE notification messages.
  • We plan to send each affected user an apology and information about this outage.

When an outage occurs, we post a preliminary report on the LINE API Status. For more information, see Check the availability of the LINE Platform (LINE API Status) in the LINE Platform basics.

We'll continue to improve the quality of our services to prevent future outages. Thank you for your understanding.

As announced on July 17, 2026, the LINE In-App Purchase Terms of Use (for LINE MINI App Provider) were revised on July 27, 2026.

Date of revision

July 27, 2026

Details of revision

• Clarifying provisions based on the responsibilities, authority, etc. of each party
• Other formatting-related updates

We'll continue to work to further improve our service to our customers. Thank you for your understanding.

The LINE In-App Purchase Terms of Use (for LINE MINI App Provider) will be revised on July 27, 2026.

Scheduled date of revision

July 27, 2026

The content and date are subject to change.

Details of revision

• Clarifying provisions based on the responsibilities, authority, etc. of each party
• Other formatting-related updates

The differences between before and after the revision are as follows:

We'll continue to work to further improve our service to our customers. Thank you for your understanding.

You can now retrieve statistics, such as the number of times a rich menu was displayed and clicked, for rich menus created using the Messaging API.

Added endpoints

• Get rich menu insight totals
• Get rich menu insight by day

Previously, statistics could only be viewed in Insight - Rich menus (only available in Japanese) for rich menus created using LINE Official Account Manager. With this addition, you can now also retrieve statistics for rich menus created using the Messaging API.

Statistics for rich menus created using the Messaging API can't be viewed in LINE Official Account Manager. Similarly, statistics for rich menus created using LINE Official Account Manager can't be retrieved using the Messaging API.

LINE Messaging API SDK updates

For more information about the update status of each SDK release in line with the addition of these new features, see the LINE Messaging API SDKs release notes.

As announced on June 5, 2026, we have started applying service fees to the LINE MINI App in-app purchase feature.

With the introduction of service fees, we have revised the LINE In-App Purchase Terms of Use (for LINE MINI App Provider).

Fee effective date

Applicable service fees will be charged for usage from July 2026 onward.

The fee rate that applies will be the rate specified at the time of your application.

Date of revision

July 1, 2026

Details of revision

The main revisions are as follows:

• Clarification of descriptions related to fee calculation and settlement/payment methods
• Other formatting changes

We will continue to work to further improve our service to our customers. Thank you for your understanding.

We've released LIFF v2.29.1.

In LIFF v2.29.1, we've made changes to the internal behavior of the LIFF SDK. There is no change in features.

How to update to LIFF v2.29.1

If you're using the CDN edge path (https://static.line-scdn.net/liff/edge/2/sdk.js), you'll automatically update LIFF to v2.29.1.

If you're using an npm package, you can update to v2.29.1 by executing either npm install @line/liff@2.29.1 or yarn add @line/liff@2.29.1.

For more information on integrating the LIFF SDK, see Integrating the LIFF SDK with the LIFF app in the LIFF documentation.

You can now delete your developer account on the LINE Developers Console.

When you delete your developer account, you can no longer log in to the LINE Developers Console with that developer account. Note that the Business ID and LINE account associated with the developer account won't be deleted.

How to delete your developer account

You can delete your developer account from the Delete your developer account section on the profile screen of the LINE Developers Console.

To delete a developer account, at least one other developer account must have the Admin role for each provider or channel for which the account has the Admin role.

For more information, see Delete your developer account in the LINE Developers Console documentation.

Verified MINI Apps in Japan can now link their LINE MINI App channels to Business Manager organizations.

By linking a LINE MINI App channel to a Business Manager organization, you can integrate with accounts of other services linked to the same organization.

Currently, the only supported integration is with LINE Official Accounts. We plan to expand the available features in the future, including the ability to display information about your LINE MINI App on the business profile of a linked LINE Official Account.

Requirements for linking to a Business Manager organization

To link a LINE MINI App channel to a Business Manager organization, all of the following conditions must be met:

• The LINE MINI App is a verified MINI App.
• Region to provide the service for the LINE MINI App channel is set to "Japan".
• The provider and the service company of your LINE MINI App for Published must match (*).
• Region for the Business Manager organization is set to "Japan".

* On the Business information tab of the published data for the LINE MINI App channel, one of the following conditions must be met:

• Same as the service company in the "Development company information" section is enabled
• Same as the service company in the "Development company information" section is disabled and Provider in the "Provider information" section is set to "Service company"

How to link to a Business Manager organization

To link a LINE MINI App channel to a Business Manager organization, send a link request from the Business Manager link tab. For more information, see Link a LINE MINI App channel to a Business Manager organization in the LINE MINI App documentation.

The LINE MINI App in-app purchase feature is offered free of charge until the end of June 2026 so that more customers can use it. From July 1, 2026, the applicable service fees will be charged.

With the introduction of service fees, we'll revise the LINE In-App Purchase Terms of Use (for LINE MINI App Provider).

Fee effective date

From payments processed on or after July 1, 2026, the applicable fees will be charged.

The fee rate applied will be the rate specified at the time of your application.

Scheduled revision date

July 1, 2026

The content and date are subject to change.

Details of revision

Main revisions:

• Clarifying descriptions based on the methods of calculating fees and of settlement/payment
• Other formatting changes

The differences between before and after the revision are as follows:

We'll continue to work to further improve our service to our customers. Thank you for your understanding.

As announced on May 7, 2026, we have changed the rate limit for the Get rich menu list endpoint as of May 26, 2026.

Date of specification change

May 26, 2026

Details

The rate limits before and after the change are as follows:

There are no changes to the rate limits for endpoints other than those listed above.

We will continue to work to further improve our services to our customers. Thank you for your understanding.

Starting from LINE version 26.7.0, the specifications for the header of the LIFF browser used to display LINE MINI Apps and LIFF apps have been updated. These changes include updates to the action button icon and its behavior when tapped, as well as replacing the minimize button with the close button.

Target version

LINE version 26.7.0 or later

Changes

The main changes are as follows:

• Action button icon
• Action button tap behavior
• Minimize button

Action button icon

Previously, the action button used an icon representing the multi-tab view. From LINE version 26.7.0 or later, the action button icon has been changed to a vertical ellipsis icon.

Before change	LINE version 26.7.0 or later

Action button tap behavior

Previously, tapping the action button opened the multi-tab view. From LINE version 26.7.0 or later, tapping the action button now opens a dropdown menu.

Before change	LINE version 26.7.0 or later

The dropdown menu contains the following items:

The items displayed in the dropdown menu vary depending on factors such as whether the app is a LINE MINI App or a LIFF app, and whether the LINE MINI App is verified. For more information, see Dropdown menu in the LINE MINI App documentation and Dropdown menu in the LIFF documentation.

Minimize button

For verified MINI Apps, the minimize button was previously displayed in the header. From LINE version 26.7.0 or later, the minimize button has been moved into the dropdown menu, and the close button is now displayed in its place.

Before change	LINE version 26.7.0 or later

We'll continue to improve the quality of our products and developer documentation to make it easier for developers to create services using the LINE Platform.

We've released LIFF v2.29.0.

In LIFF v2.29.0, we've made changes to the internal behavior of the LIFF SDK. There is no change in features.

How to update to LIFF v2.29.0

If you're using the CDN edge path (https://static.line-scdn.net/liff/edge/2/sdk.js), you'll automatically update LIFF to v2.29.0.

If you're using an npm package, you can update to v2.29.0 by executing either npm install @line/liff@2.29.0 or yarn add @line/liff@2.29.0.

For more information on integrating the LIFF SDK, see Integrating the LIFF SDK with the LIFF app in the LIFF documentation.

The following issues were occurring in the LIFF/LINE MINI App, but we've released an updated version of LINE that resolves them. We sincerely apologize for any inconvenience that this may have caused.

Date and time of outage

April 27, 2026 - May 14, 2026

Cause of the outage

Bug in LINE for Android versions 26.6.0 and 26.6.1

Details

The following issues were occurring in LIFF/LINE MINI Apps under specific conditions:

• User profiles couldn't be retrieved
• The LIFF API wasn't working properly

Impact

This issue occurred when all of the following conditions were met:

• A user uses LINE for Android.
• The user's LINE version is 26.6.0 or 26.6.1.
• While the LIFF browser is open, the same or a different LIFF/LINE MINI App is launched using Intent or App Links.

If all of the above conditions are met, updating the user's LINE version to 26.6.2 or later will resolve the issue.

Workaround

This issue occurred when the LIFF SDK referenced an invalid access token. You can potentially work around the issue by performing the following steps on your LIFF/LINE MINI App, even on devices where LINE hasn't been updated:

• When navigating from a LIFF/LINE MINI App to the same or a different LIFF/LINE MINI App, use location.href for the transition.
• If a LIFF SDK error that may be caused by this issue is detected in a LIFF/LINE MINI App (e.g., error code invalid_request), call the liff.logout() method and then call the liff.login() method as follows:

const params = new URLSearchParams(location.search)
const liffState = params.get('liff.state')
const redirectUri = liffState
    ? new URL('.' + liffState, location.href).toString()
    : location.href
liff.login({ redirectUri })

We sincerely apologize for any inconvenience.

In the Messaging API, rate limits are set for each endpoint. We would like to inform you that we plan to change the rate limit for the Get rich menu list endpoint as of May 26, 2026.

Scheduled date of specification change

May 26, 2026

The content and date of this specification change are subject to change.

Details

The rate limits before and after the change are as follows:

There are no changes to the rate limits for endpoints other than those listed above.

We will continue to work to further improve our services to our customers. Thank you for your understanding.

We would like to inform you about a service outage regarding LIFF/LINE MINI App. The issue has now been resolved. We sincerely apologize for any inconvenience that this may have caused.

Date and time of outage

1. April 27, 2026 around 19:46 - around 20:05 (UTC+9)
2. April 27, 2026 around 19:46 - April 28, 2026 around 0:12 (UTC+9)

Cause of the outage

Server failure

Impact

• LIFF
• LINE MINI App

Details

Failed to load LIFF SDK

There were instances where the LIFF SDK failed to load in LIFF apps and LINE MINI Apps using the CDN path to load the LIFF SDK during the period described in item 1.

Failed to initialize LIFF app

There were instances where the initialization of the LIFF app using the liff.init() method failed during the period described in item 2, causing LIFF apps and LINE MINI Apps to become unavailable.

We will continue to improve the quality of our services to prevent future outages. Thank you for your understanding.

We would like to inform you about a service outage regarding the Messaging API. The issue has now been resolved.

We sincerely apologize for any inconvenience that this may have caused.

Date and time of outage

April 17, 2026 around 11:37 - around 11:40 (UTC+9)

Cause of the outage

Server failure

Impact

This issue affected the endpoints in the following sections:

• Rich menu
• Per-user rich menu
• Rich menu alias

Details

During the stated date and time, some requests were not processed properly, resulting in errors with status code 5xx.

We will continue to improve the quality of our services to prevent future outages. Thank you for your understanding.

On the LINE Developers site, some documentation and references are available in Markdown format. We've published these Markdown files on GitHub.

LINE Developers Documentation Source Files

Pages that are available in Markdown format now show the View on GitHub button near the page title. Clicking the View on GitHub button opens the Markdown file for that page on GitHub.

We'll continue to improve the quality of the LINE Developers site and developer documentation to make it even easier for developers to develop apps using our services.

We would like to inform you that the LINE Ads API will be discontinued in March 2027, following the discontinuation of LINE Ads in Japan.

Scheduled discontinuation date

End of March 2027

The specific discontinuation date will be announced by LINE Ads once it is determined.

Details

For more information about the discontinuation of LINE Ads, see Announcement regarding the launch date of LY Ads Display Ads and platform integration (only available in Japanese) in LINE for Business.

The LINE Ads API will remain available in Taiwan and Thailand. If you are using the LINE Ads API in these regions, see the LINE Ads API documentation.

If you have any questions regarding the discontinuation of the LINE Ads API, contact us at ml-lads-api-support@lycorp.co.jp.

We will continue to work to further improve our services to our customers. Thank you for your understanding.

We've migrated partial content from the LINE API Use Case site, which introduced technical information, use cases, client stories, and demo apps related to the LINE Platform, to the LINE Developers site.

The LINE API Use Case site will be closed on March 31, 2026.

Migrated content

• Practical scenarios and demo apps for the LINE Platform
  • LINE MINI App demos
• User adoption stories for the LINE Platform
  • Messaging API case studies
  • LINE MINI App case studies

We'll continue to improve the quality of the LINE Developers site and developer documentation to make it even easier for developers to develop services using the LINE Platform.

We've released LIFF v2.28.0.

In LIFF v2.28.0, we've made the following change.

We've added the liff.requestFriendship() method which prompts the user to add the LINE Official Account as a friend

We've added the liff.requestFriendship() method which displays a subwindow that prompts the user to add the LINE Official Account as a friend, or to unblock it.

For more information, see Requesting the user to add the LINE Official Account as a friend or unblock it in the LIFF documentation.

How to update to LIFF v2.28.0

If you're using the CDN edge path (https://static.line-scdn.net/liff/edge/2/sdk.js), you'll automatically update LIFF to v2.28.0.

If you're using an npm package, you can update to v2.28.0 by executing either npm install @line/liff@2.28.0 or yarn add @line/liff@2.28.0.

For more information on integrating the LIFF SDK, see Integrating the LIFF SDK with the LIFF app in the LIFF documentation.

We'd like to inform you about a service outage regarding the LINE Developers Console. The issue has now been resolved. We sincerely apologize for any inconvenience that this may have caused.

Date and time of outage

March 20, 2026 around 11:28 - March 23, 2026 around 11:37 (UTC+9)

Cause of the outage

Server failure

Impact

LINE Developers Console

Details

In the emails sent to invite developers to providers and channels, the URLs for accepting invitations in emails sent on or after around 11:28 on March 20, 2026, all became invalid around 11:37 on March 23, 2026. The issue has now been resolved, and emails containing valid URLs are being sent.

Emails containing invalid URLs sent during the service outage will not be resent via the LINE Developers Console. If you open the URL in the email and see the message "The token used for this invitation has expired", you will need to request a new invitation from a member with provider or channel permissions.

For more information on inviting developers to providers and channels, see Managing roles in the LINE Developers Console documentation.

LINE will continue to improve the quality of its services to prevent future outages. Thank you for your understanding.

We'd like to inform you about a service outage regarding the LINE Platform. The issue has now been resolved. We sincerely apologize for any inconvenience that this may have caused.

Date and time of outage

March 19, 2026 around 12:15 - around 12:16 (UTC+9)

Cause of the outage

Server failure

Impact

• Messaging API
• LINE Login
• LIFF/LINE MINI App

Details

These are the main impacts per product:

• Messaging API
• LINE Login
• LIFF/LINE MINI App

Messaging API

• There were instances where sending webhook events was delayed.
• Some requests weren't processed properly, resulting in errors with status code 5xx.

Due to this outage, the messages that weren't properly sent even if the API requests succeeded, won't be counted as the LINE Official Account usage fees and the "number of sent messages" that can be confirmed in some way such as the Get number of sent push messages endpoint.

Retrying a failed API request

In some APIs, you can safely retry a request while preventing the same request from being accepted in duplicate by using a retry key (X-Line-Retry-Key) when an error with status code 5xx occurs or when the request times out.

For more information, see Retry failed API requests and Specify the retry key always in the Messaging API documentation.

LINE Login

• There were instances where LINE Login didn't work per usual.
• Some requests weren't processed properly, resulting in errors with status code 5xx.

LIFF/LINE MINI App

• There were instances where LIFF/LINE MINI App couldn't be used per usual.
• Some requests weren't processed properly, resulting in errors with status code 5xx.

When an outage occurs, we post a preliminary report on the LINE API Status. For more information, see Check the availability of the LINE Platform (LINE API Status) in the LINE Platform basics.

We will continue to improve the quality of our services to prevent future outages. Thank you for your understanding.

As of March 11, 2026, anyone who is a permitted customer in the LINE MINI App Policy can create a LINE MINI App channel for services in Taiwan or Thailand.

As a result, LINE MINI Apps whose region to provide the service is Taiwan or Thailand can now be published as unverified MINI Apps.

For more information, see Create a LINE MINI App Channel in the LINE MINI App documentation.

Date of change

March 11, 2026

Regarding verification review for LINE MINI Apps

If the region to provide the service is Taiwan or Thailand, only LINE MINI App channels under a certified provider can apply for the verification review to publish the LINE MINI App as a verified MINI App.

For more information, see Submitting LINE MINI App in the LINE MINI App documentation.

We'll continue to improve the quality of our products and developer documentation to make it easier for developers to create services using the LINE Platform.

As announced on February 6, 2026, the LINE MINI App Policy has been revised on February 19, 2026.

Date of revision

February 19, 2026

Details of revision

• Changes related to digital content
• Clarifications to the privacy policy
• Other formatting-related updates

Background of the revision

Previously, the sale of virtual items such as digital content was generally prohibited in LINE MINI Apps. However, starting today in Japan, virtual items can now be sold by using the in-app purchase feature, which has become available. Accordingly, the LINE MINI App Policy has been revised.

We'll continue to work to further improve our service to our customers. Thank you for your understanding.

We've officially released the "in-app purchase" feature for LINE MINI Apps in Japan.

The in-app purchase feature allows users to buy digital content offered within LINE MINI Apps.

This feature was initially rolled out to select companies starting in July 2025. With this release, verified MINI Apps can now utilize the in-app purchase feature by applying to use in-app purchase via the LINE Developers Console.

To start using the in-app purchase feature, after submitting an application, you must undergo our in-app purchase review and the verification review.

Release date

February 19, 2026

Release details

The following updates have been released:

• Apply to use in-app purchase
• Test payment in a Developing channel
• Webhook URL configuration and test payment feature tester registration

In-app purchase use conditions

The LINE MINI App must have both "Region to provide the service" and "Company or owner's country or region" set to "Japan" on the LINE MINI App channel.

In-app purchase requirements

• The LINE MINI App is a verified MINI App (*)
• LIFF SDK version of the LINE MINI App is 2.26.0 or later
• The LINE MINI App is opened in the LIFF browser
• The user has registered a Japanese phone number with their LINE account
• The user's LINE version is 15.6.0 or later

* Unverified MINI Apps will only work on LINE MINI Apps for Developing and Review.

For more information, see In-app purchase overview in the LINE MINI App documentation and LINE In-App Purchase Terms of Use (for LINE Mini App Provider).

We'll continue to improve the quality of our products and developer documentation to make it easier for developers to create services using the LINE Platform.

Starting March 9, 2026, Edge-to-edge will be applied to the Android version of LINE.

This may cause buttons and content placed at the bottom of LIFF apps and LINE MINI Apps to overlap with the navigation bar area, potentially impairing usability and visibility. Therefore, we ask developers to check for potential impacts and take necessary actions in advance.

Specification change date

March 9, 2026 (UTC+9)

Target versions

LINE version 26.3.0 or later for Android

Affected LIFF apps/LINE MINI Apps

All LIFF apps and LINE MINI Apps are affected. Also, all of the Size of the LIFF browser—Full, Tall, and Compact—are affected.

Specification changes

Google provides Edge-to-edge enforcement for all apps on Android 15 and later. Accordingly, the Android version of the LINE app will also support edge-to-edge, which will affect LIFF apps and LINE MINI Apps as follows:

The WebView area remains unchanged in the status bar at the top of the screen.

Impact and requests

This change may cause buttons and content placed at the bottom of LIFF apps and LINE MINI Apps to overlap with the navigation bar area, potentially impairing usability and visibility.

Developers providing LIFF apps and LINE MINI Apps are requested to check the following points by the specification change date:

• Ensure that elements at the bottom of the screen don't obstruct operation
• If necessary, use safe-area-inset-bottom to control content that should not overlap with the gesture navigation area

CSS example for handling the navigation area

For environments with WebView version 144 or later, use safe-area-inset-bottom. For environments with WebView version earlier than 144, use --android-safe-area-inset-bottom as a fallback.

margin-bottom: var(
  --android-safe-area-inset-bottom,
  env(safe-area-inset-bottom)
);

When the device is in landscape orientation, the behavior remains unchanged. The left and right safe-area-inset and --android-safe-area-inset values will always be set to 0.

We'll continue to work to further improve our service to our customers. Thank you for your understanding.

We've launched a new content section called Tips for Developers on the LINE Developers site.

What is Tips for Developers

Tips for Developers is a lightweight, easy-to-read content category. It's separate from the documentation and API reference.

The LINE Developers site covers a wide range of products, such as the Messaging API and the LINE MINI App. The documentation also spans many topics. We publish updates in the news section for major feature additions or specification changes. However, we also make many small improvements and additions. There are also many useful existing features that aren’t newly released but are not widely known, along with documentation that explains how to use them.

That's why we started Tips for Developers. It's a place to highlight the small improvements and existing features and documentation that we want developers to know about, as well as best practices for development, case studies and other things that aren't new information, but deserve a fresh spotlight.

We'll continue to improve the quality of the LINE Developers site and developer documentation to make it even easier for developers to develop apps using our services.

LINE MINI App Policy will be revised on February 19, 2026.

Scheduled date of revision

February 19, 2026

The content and date are subject to change.

Details of revision

• Changes related to digital content
• Clarifications to the privacy policy
• Other formatting-related updates

The differences between before and after the revision are as follows:

Background of the revision

Until now, the sale of virtual items such as digital content has generally not been allowed in LINE MINI Apps. Going forward, in Japan, virtual items will be able to be sold using the upcoming in-app purchase feature. Accordingly, the LINE MINI App Policy will be revised.

We'll continue to work to further improve our service to our customers. Thank you for your understanding.

We'd like to inform you about a service outage regarding the Messaging API. The issue has now been resolved.

We sincerely apologize for any inconvenience that this may have caused.

Date and time of outage

February 3, 2026 around 14:13 - around 15:44 (UTC+9)

Cause of the outage

Server failure

Impact

Get content

Details

During the stated date and time, some requests weren't processed properly, resulting in errors with status code 400.

We will continue to improve the quality of our services to prevent future outages. Thank you for your understanding.

You can now use web traffic audiences using Tracking Tag in the LINE Official Account and Messaging API, in addition to web traffic audiences using LINE Tag.

Web traffic audiences using Tracking Tag can be created in the LINE Official Account Manager. You can retrieve information about the created web traffic audiences using endpoints such as the Get audience data endpoint.

About Tracking Tag

Tracking Tag is a tag used to measure performance across various LY Corporation services. For more information, see Announcement: Launch of Tracking Tag for LINE Official Accounts (only available in Japanese) in LINE for Business.

Requirements for using Tracking Tag

In order to use Tracking Tag with your LINE Official Account, all of the following conditions must be met:

• The LINE Official Account is for Japan
• The LINE Official Account is connected to an authenticated organization in Business Manager (only available in Japanese)
• The LINE Official Account is either a verified account or a premium account

About LINE Tag

LINE Tag will be discontinued in the future. If you plan to use tags for measurement, consider using Tracking Tag. We'll announce the details regarding the discontinuation once they have been determined.

LINE Messaging API SDK updates

For more information about the update status of each SDK release related to the above, see the LINE Messaging API SDKs release notes.

As announced on October 31, 2025, for new LINE MINI App channels in Japan, the use of the "Channel consent simplification" feature has been mandatory as of January 8, 2026.

Specification change date and time

January 8, 2026 12:00 (UTC+9)

LINE MINI App channels subject to the specification changes

LINE MINI App channels created after the specification changes and whose Region to provide the service under the Basic settings tab is set to "Japan"

LINE MINI App channels not subject to the specification changes

• LINE MINI App channels created before the specification changes
• LINE MINI App channels whose Region to provide the service under the Basic settings tab is set to "Thailand" or "Taiwan"

Specification changes

The applicable LINE MINI App channels have been changed as follows:

• The "Channel consent simplification" feature is always enabled.
  • Accordingly, the toggle button for Channel consent simplification under the Web app settings tab has been removed, and you can no longer disable the feature.

The above changes also apply to unverified MINI Apps if the LINE MINI App channels are subject to the specification changes. However, the "Channel consent simplification" feature is available only in unverified MINI Apps for Developing and for Review.

Impact on the add friend option

In the LINE MINI App, you can use the add friend option to prompt users to add your LINE Official Account from the verification screen or the channel consent screen.

However, if only openid is specified in the "Scope" section of the Web app settings tab in your LINE MINI App channel, enabling the "Channel consent simplification" feature will prevent the verification screen and the channel consent screen from appearing. As a result, you can't prompt users to add friends using the add friend option.

To prompt users to add your LINE Official Account as a friend using the add friend option, specify scopes other than openid in the "Scope" section of the Web app settings tab in your LINE MINI App channel, and display the verification screen using one of the following methods:

• Method 1. Use the liff.permission.query() method and the liff.permission.requestAll() method
• Method 2. Use methods that require permissions other than the openid scope

Method 1. Use the liff.permission.query() method and the liff.permission.requestAll() method

You can use the liff.permission.query() method and the liff.permission.requestAll() method to display the verification screen.

// Display the verification screen when the user hasn't consented to the profile scope
liff.permission.query("profile").then((permissionStatus) => {
  if (permissionStatus.state === "prompt") {
    liff.permission.requestAll();
  }
});

For more information, see liff.permission.query() and liff.permission.requestAll() in the LIFF API reference.

Method 2. Use methods that require permissions other than the openid scope

You can use methods that require permissions other than the openid scope to display the verification screen. The following methods require permissions other than the openid scope:

To prompt users to add your LINE Official Account as a friend right after your LINE MINI App launches, like the channel consent screen does, implement Method 1 or Method 2 so that they run right after your LINE MINI App launches.

Background of the specification changes

The specification changes aim to improve the user experience and encourage the use of LINE MINI Apps by allowing users to use them more smoothly.

We'll continue to work to further improve our service to our customers. Thank you for your understanding.

Maintenance is scheduled on the LINE Developers Console.

Date and time of maintenance

January 19, 2026 10:00 - 12:00 (UTC+9)

Note that the end time of the maintenance may change without notice.

Impact

For about one minute during the maintenance, the following operations on the LINE Developers Console will be unavailable.

• Creating a LINE MINI App channel
• Changing the settings of a LINE MINI App channel
• Requesting a review of a LINE MINI App

Existing LINE MINI Apps will remain available to users during the maintenance.

We sincerely apologize for any inconvenience that this may cause and thank you for your understanding.