Tips for Developers

The LINE Developers site contains documentation for various products, API references, the latest news, and more. When developing, the site search feature is useful for situations such as "checking specific API specifications" or "finding in...

Hello! I'm Furuki, a technical writer. Each Messaging API endpoint has a rate limit that controls how frequently requests can be sent. If a request exceeds the rate limit, the API returns the 429 Too Many Requests status code with the error...

Hi! I’m Okajima, a technical writer in charge of documentation for the LINE Developers site. You can use the liff.requestFriendship() method to prompt users to add a LINE Official Account as a friend in a LIFF app or LINE MINI App. The liff...

Flex Messages let you create flexible layouts without relying on images. When you focus on appearance, you may overlook how recipients will use the message. This article shows settings you may overlook when you implement Flex Messages. It a...

Flex Messages let you create flexible layouts without relying on images. However, line breaks and the amount of visible text may differ even when you use the same JSON. The result depends on the device's screen width, OS, LINE app version, ...

When integrating LINE Login or developing a LINE MINI App, you may notice that you can get profile information such as an end user's user ID and display name. It might seem that you can send the profile information to your service's server ...

Hello! I’m Oka from the technical support team. In this edition of "Tips," I’ll be introducing the LIFF execution environment. Have you ever developed a LIFF app and been puzzled because it works in your PC's browser but behaves differently...

In this article, we'll introduce liff.ready, a modest but handy property, and a caveat you should know about when using it. Where to wait for liff.init() to complete In a LIFF app, many methods, such as the liff.getProfile() method, can onl...