Line

API

Official Line API for login, sharing, and social plugins integration

Overview

The Line API offers RESTful endpoints for integrating Line's social features into apps and websites. Key endpoints include Line Login (OAuth 2.0 authentication with user profile data), Share on Line (post content to Timeline/chat), and Social Plugins (embed follow/share buttons). Responses are in JSON format. Use cases: Enable secure Line login for user accounts, add one-click Line sharing, embed social plugins to boost engagement with Line's global user base. It supports mobile/web platforms with SDKs for Java, Swift, JavaScript, and more to simplify integration.

Example Integration (JavaScript)

script.js JS


fetch('https://developers.line.biz/')
  .then(res => res.json())
  .then(data => console.log(data))
  .catch(err => console.error(err));

Key Features

RESTful API design
JSON response format
Line Login integration (OAuth 2.0)
Social sharing to Line Timeline/chat
Embeddable social plugins
Multi-platform SDKs (mobile/web)
User profile data access (with consent)

Frequently Asked Questions

? Is the Line API free to use?

Basic features like Line Login, standard sharing, and social plugins are free. Advanced features or higher usage limits may require a paid subscription plan.

? Does the Line API require an API key?

Yes, you need to register a developer account on the Line Developers portal to obtain an API key and secret for authenticating your application with the API.

? What is the response format of the Line API?

Most endpoints return data in JSON format, which is widely compatible with modern web and mobile applications.

Top Alternatives

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Tool Info

Pricing Freemium

Category Social

Platform Public API

Pros

⊕ Official Line support and documentation
⊕ Secure authentication flow
⊕ Easy integration via SDKs
⊕ Covers multiple social use cases
⊕ Large user base in Asia and global markets

Cons

⊖ Rate limits on free tiers
⊖ Advanced features require paid plans
⊖ Regional popularity skew (dominant in Asia)
⊖ Requires Line developer account setup