# Log in to LINE Developers

You can log in to LINE Developers Console using one of the following accounts.

  • LINE account
  • Business account

For more information, see the difference between Log in with LINE account and Log in with business account (opens new window)in Help Center.

Which account should I use to log in?

If you're already using LINE, you can use your existing LINE account to log in. If you don't want to use your personal LINE account, you can use your work email address to create a business account. However, if you log in with a business account, there may be some limitations to the available features.

# Log in to LINE Developers Console

To log in to LINE Developers Console, click the Log in button in the top-right corner of the LINE Developers site.

Click Log in

On the next screen, click Log in with LINE account or Log in with business account.

Log in to LINE Developers Console

# Log in with LINE account

After clicking Log in with LINE account, use the following methods to log in:

  • Auto login: Log in without operation on your smartphone with LINE installed.
  • Email address log in: Log in using the email address and password registered for your LINE account.
  • QR code log in: Log in using the QR code reader of your smartphone's LINE app to scan the QR code displayed.
  • Single Sign On (SSO) login: Log in by clicking the login button on the confirmation screen showing "Continue as".
Two-factor authentication is enabled when logging in with LINE account

Two-factor authentication is enabled when you log in using your LINE account. When you log in from a browser on your computer using an email address, you must enter the email address and password of your LINE account, and then enter the authentication code displayed on your smartphone's LINE App.

Two-factor authentication flow

Once two-factor authentication is executed, the browser used to log in won't require two-factor authentication again for one year. Also, if you've already logged in to LINE Official Account Manager (opens new window) using two-factor authentication, you won't be required to log in to the LINE Developers Console with the same account.

# Log in with business account

After clicking Log in with business account, use this method to log in.

  • Email address log in: Log in using the email address and password registered for your business account.

# Create a developer account (only on first login)

When you first log in to the LINE Developers Console with your LINE account or business account, create a developer account. Enter Developer name and Your email. Read carefully and agree to the LINE Developers Agreement (opens new window). Click Create my account. This step is only required on first login.

Developer account creation screen

Once the developer account has been created, a screen showing that the developer account has been created will be displayed.

Developer account creation completion screen

# Available features

Depending on the account you use to log in, you can create different channel types.

LINE Login Messaging API CLOVA Skill Blockchain Service LINE MINI App
LINE account
Business account linked to a LINE account
Business account not linked to a LINE account ✅ *1

*1 May not be able to create depending on circumstance.

Creation of LINE MINI App channel
  • If the region to provide the service is Japan, anyone who is permitted customers can create a LINE MINI App channel.
  • When your service area is Taiwan or Thailand, you can only create a LINE MINI App channel if you have been approved by LINE. The contact details for receiving approval are currently being prepared.
  • If you are unable to create a LINE MINI App channel even though your service area is Japan, try the following:

Limitations on available features apply depending on the roles granted to your developer account in use. For more information, see Managing roles.

You can only link one business account per each LINE account. You can't link multiple business accounts to a single LINE account.

Follow these steps to link your business account with your LINE account:

  1. Log in to the LINE Developers Console

  2. Click the icon in the top-right corner of the screen

    Click the icon in the top-right corner of the screen

  3. Click the account information, and then open the Profile screen

    Click account information

  4. Click the Go to LINE Business ID Profile button to go to your LINE Business ID profile

    Click the Go to LINE Business ID Profile

  5. Click the link icon next to "Unlinked" on LINE

    Link to LINE account

  6. Log in to the LINE account you want to link your business account with

  7. Once login to your LINE account is complete, the LINE account will be linked to the business account

When the message "This LINE account is already in use." is displayed when linking your LINE account

The LINE account that you want to link to your business account must not be linked to any other business account. If you try to link your business account to a LINE account that you've previously linked to any other business account, you will see a message that says, "This LINE account is already in use," and you won't be able to link the accounts.

Link to LINE account

Linking a developer account with a LINE account

Linking developer account with LINE account must be linked through business account. You can link your developer account with your LINE account by linking your LINE account with the business account that is linked to your developer account.

In order to unlink your LINE account from your business account, you must register the email address and password with your business account. When you unlink your LINE account from your business account, the link between your developer account and your LINE account will also be invalidated.

Follow these steps to unlink LINE account from your business account:

  1. Log in to the LINE Developers Console

  2. Click the icon in the top-right corner of the screen

    Click the icon in the top-right corner of the screen

  3. Click the account information, and then open the Profile screen

    Click account information

  4. Click the Go to LINE Business ID Profile button to go to your LINE Business ID profile

    Click the Go to LINE Business ID Profile

  5. Click the delete icon on LINE

    • When you haven't registered your email address and password, click the edit icon on Email address and register them.

    Unlink LINE account

  6. Click Delete on the confirmation screen

    Click Delete on the confirmation screen

  7. The business account and the LINE account are unlinked

# Account relationships  

You need a developer account to use the LINE Developers Console. In addition, a developer account is always linked to a business account on a one-to-one basis.

A developer account and a LINE account are linked through a business account. When you link your LINE account to your business account that is linked to your developer account, you can link your LINE account to your developer account.

The developer account you created when you started using the LINE Developers Console is also linked to a business account, regardless of the type of the account used when you logged in the first time. The relationship between the type of an account used for the first login and the connection to the developer account is as follows:

Type of account Linked state LINE account to be linked Business account to be linked
LINE account Business account isn't linked LINE account used for login A new business account will be created and linked to the developer account (*)
Business account is linked LINE account used for login Business account that is linked to the LINE account
Business account LINE account isn't linked None Business account used for login
LINE account linked LINE account already linked to the business account Business account used for log in

* The new business account will be linked to the LINE account used for the first login. The email address and password will be left unset and can be set at any time later.

Note on linking your developer account to your business account
  • If you delete the business account linked with your developer account, you will no longer be able to log in to your developer account
  • A business account linked with a developer account can't be changed later
About the email address for each account

The name and email address registered for your developer account, business account, and LINE account are managed separately. Therefore, the email addresses registered to each account may be different.