Why LINE shows stale data

LINE caches preview data after Linespider fetches the page. Re-sharing the same URL may serve the cached version. The cache duration isn’t documented but can be long.

Using the official cache-clearing tool

LINE provides a cache-deletion tool through the LINE Developers site – the equivalent of Facebook’s “Scrape Again” button:

1. Visit the cache-clearing tool
2. Enter the stale URL
3. Submit the invalidation request
4. Share the URL in a new LINE message

Alternative approaches

If you can’t access the tool:

1. Append ?v=2 to the URL – LINE treats it as new and fetches fresh data
2. Wait for natural expiry – timing is unpredictable
3. Change the URL path if possible

Existing messages don’t update

Previews in already-sent messages are permanent. Cache clearing only affects new shares.

Prevention

• Finalize OG tags before sharing links in LINE chats
• Use our preview tool to verify tags before sharing
• Bookmark the cache-clearing tool