Open Graph Checker: Test Your Social Sharing Tags

By Debmedia Technologies LLP · Kolkata, India · Updated 3 November 2026

What Is an Open Graph Checker?

An Open Graph checker tests the tags that decide how your page looks when someone shares its link. When you paste an address into Facebook, LinkedIn, WhatsApp, Slack or X, the platform reads a few tags from the page and builds a card with a title, a description and a picture. Those tags are called Open Graph tags.

If they are missing or wrong, the card can be empty, show the wrong picture or look blurry. This Open Graph checker reads your tags, tests the share image and tells you what to improve before you share.

How to Use This Open Graph Checker

Enter the page address you plan to share.
Press Check Open Graph.
Read the checks, then the table of tags that were found.
Look at the share image details: size, shape and file weight.

The Main Open Graph Tags

Tag	Purpose	Status
og:title	The headline of the card.	Required
og:type	The kind of page, such as website or article.	Required
og:image	The picture shown on the card.	Required
og:url	The permanent address of the page.	Required
og:description	A short summary under the title.	Recommended
twitter:card	Picks the layout on X. Use summary_large_image for a big picture.	Optional

The format comes from the official Open Graph protocol.

Getting the Share Image Right

Size: 1200 by 630 pixels is the safe choice. Anything under 600 by 315 may be ignored.
Shape: a ratio of about 1.91 to 1 avoids awkward cropping.
Weight: keep the file under about 5 MB. Smaller images load faster in previews.
Address: use a full https address that anyone can open, not a page that needs a login.

The checker downloads your image, reads its real size and tells you whether it meets these targets.

Why a Shared Link Can Still Look Wrong

Platforms keep a copy of each preview for days. After you fix the tags, ask the platform to refresh it with its own debugging tool, or wait for the copy to expire. Security plugins and firewalls can also block the platform’s crawler, so the tags never reach it. This tool asks for your page with the same name that Facebook uses, so it shows what such a crawler can see.

Check the ordinary tags of the same page with the meta tag review, or make sure the page returns the right code with the status checker. If the page redirects before it loads, trace it with the redirect checker.

Frequently Asked Questions

What is Open Graph?+

Open Graph is a set of tags that tell social networks which title, description and image to show when a page is shared. Facebook created it, and most platforms now read it.

What size should the share image be?+

1200 by 630 pixels, in a ratio of about 1.91 to 1, works well on every major platform. Keep the file under about 5 MB.

Why does a shared link still show old data?+

Platforms cache link previews. After you fix your tags, use the platform's own debugger or wait for its cache to expire.

Do I need Twitter Card tags too?+

X falls back to Open Graph tags, so they are optional. Adding twitter:card with the value summary_large_image gives the large image layout.

Disclaimer: results come from live requests and can change as records and servers change. We cannot guarantee that every answer matches what every visitor sees.