Open Graph checker — preview how your link looks when shared.
Enter a URL to see the card it produces on social networks and chat apps, and which Open Graph and Twitter tags are missing.
Preview a share card
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What is Open Graph?
A set of tags that tells other sites how to show your page when it is shared.
Open Graph is a protocol introduced by Facebook and now read by almost every platform that unfurls links: LinkedIn, Slack, Discord, WhatsApp, iMessage and more. A few tags in the page head name the title, description and image to use.
X (Twitter) reads its own twitter: tags first and falls back to Open Graph when they are missing. Without any of these tags, platforms guess from the page, often picking a poor image or none at all.
Platforms cache cards. After you fix a page, you may need to ask the network's debugger to fetch it again before the new card appears.
The tags that matter
The minimum for a good share card.
| Tag | Purpose | Notes |
|---|---|---|
| og:title | Headline of the card. | Falls back to the page <title>. |
| og:description | Supporting text under the headline. | Keep it under about 200 characters. |
| og:image | Picture on the card. | Absolute URL. 1200×630 pixels works well. |
| og:url | The canonical address of the page. | Should match the canonical link. |
| og:type | What kind of page it is. | website, article, product… |
| twitter:card | Selects the layout on X. | summary or summary_large_image. |
Common questions
What size should an Open Graph image be? +
1200×630 pixels (a 1.91:1 ratio) is the safest choice. It displays as a large card on most platforms. Keep the file under about 8 MB and use JPG or PNG.
Why does the shared link still show the old image? +
Social networks cache cards for a long time. Use the network's own sharing debugger to refresh its copy after you update the tags.
Do I need both og: and twitter: tags? +
Open Graph tags are enough for most platforms, and X falls back to them. Add twitter:card if you want to choose between the small and large card layouts.
Why is the preview different from what Facebook shows? +
Each platform has its own layout and rules, so the previews here are close approximations built from the same tags.