Free tool · Link Preview Checker
Link Preview Checker: see your link on LINE, Facebook and X
Check the title, description and image your page shares, so links look right when customers send them in chats and posts.

What your result means
What the check shows
The og:title, or your page title if it is missing.
The og:description, or the meta description.
The og:image, and whether it loads.
Which tags to add so previews look right.
How to use
Step by step
- 1
Paste your page URL
Any page you share often.
- 2
The tool reads the tags
Open Graph tags and fallbacks.
- 3
See the previews
How the link card may look.
- 4
Fix missing tags
Add them in your SEO plugin.
- 5
Share and check
Post it once to test in the real app.
Guide
How link previews work
Open Graph tags
og:title, og:description and og:image tell apps what to show.
LINE uses three tags
LINE says it uses only og:title, og:description and og:image. Without them, it falls back to the page title and text.
Previews can be cached
Apps may keep an old preview for a while after you change tags.
X preview
X removed the preview in its Card Validator. Check a draft post in the X composer instead.
Why it matters
Why it matters for your business
Links get shared everywhere
Customers share links in LINE, WhatsApp, Facebook and Slack. A broken card looks untrustworthy.
Any language
Make sure titles in Thai, English or other languages show correctly and are not cut too early.
Promotions
Shared promotion pages need the right image and text.
When to use
When to use it
Before a campaign or promotion
When you launch a page you plan to share
When a link shows the wrong image
Who it’s for
Who it’s for
- Shops and brands that sell through LINE
- Social media teams
- Agencies
- Online stores running promotions
- Service businesses like clinics, hotels and schools
- Marketing teams
Common mistakes
Mistakes to avoid
No og:image
Fix: Add a clear image for every shared page.
Same image on every page
Fix: Use an image that fits each page.
Expecting changes to show at once
Fix: Apps may cache old previews.
Very small images
Fix: Use a large, clear image.
Forgetting other language pages
Fix: Check every language version too.
Worked example
Example: a Bangkok shop
A promotion link showed the logo and the home page title in LINE.
The page got its own og:title, og:description and promotion image.
Illustrative example.

Honest limits
What this tool can’t tell you
- Each app decides how to show a preview.
- It cannot clear an app’s cache.
- Some apps need you to be logged in to see previews.
FAQ
Questions, answered simply
What is a link preview?
It is the card with a title, description and image that appears when you share a link.
Why does my link look wrong on LINE?
LINE uses og:title, og:description and og:image. If they are missing, it uses the page title and text instead.
What are Open Graph tags?
They are meta tags in your page that tell apps which title, description and image to show.
I changed my image. Why is the old one still showing?
Apps can keep old previews in a cache for a while.
How do I check X previews?
X removed the preview in its Card Validator. Start a post in the X composer to see the card.
Does it work for pages in any language?
Yes. Check every language version of your pages.
Does this affect Google ranking?
Not directly. Google can use og:title for title links and og:image for thumbnails.
Is it free?
Yes. The Link Preview Checker is free and you do not need a card.
Related tools
Pair it with
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Use it free →“@type”: “LocalBusiness”,
“name”: “Example Café”,
“address”: { “addressLocality”: “Bangkok” },
“openingHours”: “Mo-Su 08:00-18:00”
}
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