Only three OG tags
LINE reads exactly three Open Graph tags. Everything else is ignored.
| Tag | Used for |
|---|---|
og:title |
Preview title |
og:description |
Description text |
og:image |
Preview image |
og:url, og:site_name, og:type, og:locale – all ignored. This is the most restrictive OG implementation of any major platform.
Fallback behavior
| Missing tag | Falls back to |
|---|---|
og:title |
<title> element |
og:description |
<meta name="description"> |
og:image |
No image shown |
LINE does not read Twitter Card tags as fallbacks. No twitter:title, no twitter:image.
What LINE ignores
If you rely on og:url for canonical URLs or og:site_name for branding, those won’t appear. LINE shows the domain from the actual shared URL.
Recommended minimal setup
<meta property="og:title" content="Your Page Title">
<meta property="og:description" content="A brief description">
<meta property="og:image" content="https://example.com/image.jpg">
These three are all that matter for LINE. Adding other OG tags won’t help.