Free tools / Open Graph checker
Free Open Graph checker
Enter a page. See its Open Graph and Twitter card tags, and what is missing before you share the link.
See the free Open Graph checker in 20 seconds
Enter a page. See its Open Graph and Twitter card tags, and what is missing before you share the link. The result in the video is a real run.
Read the video transcript
Check how your link shares, for free. Type a page address, and press Check share tags. See the share card preview, and which Open Graph tags are set. That is one page. SEOSage checks every page of your website. Start your fourteen-day free trial at seosage.co.
What this tool checks
- og:title, og:description, og:image, og:url and og:type
- The Twitter card type
- A preview of the share card
- Whether the image address is a full web address
Why it matters
Open Graph tags decide the title, description and image shown when someone shares a link on social networks and chat apps. Missing tags mean the platform guesses.
Want this for every page of a website? See Page basics checks in SEOSage.
Source: The Open Graph protocol.
How to read your result
- Each tag shows Good when it is set and Fix when it is missing.
- The preview approximates a shared link. Each network draws it a little differently.
- og:image must be a full address that starts with https://.
- The Twitter card tag tells X how to draw the link. Without it some apps use the Open Graph tags.
Common problems and fixes
- No og:image. Add an image of about 1200 by 630 pixels.
- og:url differs from the page. Point it at the canonical address of the page.
- An old preview still shows after you fix it. Networks cache previews. Refresh the link in the network debugger tool.
- The image is not a full address. Use an address that starts with https://.
What is an Open Graph checker?
An Open Graph checker is a tool that reads the Open Graph meta tags on a web page and shows what is set, what is missing and a preview of how a shared link might appear. Open Graph is a protocol, introduced by Facebook, that lets any web page describe itself for sharing on social networks and in messaging apps. The tags — og:title, og:description, og:image and og:url — sit in the HTML head of a page and control the title, description and image shown when someone shares a link on Facebook, LinkedIn, Slack, WhatsApp and similar platforms.
This free Open Graph checker also reads the Twitter card tags (which X, formerly Twitter, and some other platforms use in addition to Open Graph), shows whether og:image is a full absolute URL and gives you a preview of the share card. For Open Graph checks across every page of a website — including pages where tags are incomplete or where og:url does not match the canonical — SEOSage flags them in a crawl.
Key Open Graph tags and what they do
- og:title. The headline shown on a shared link card. Should describe the page clearly and fit within about 60 characters.
- og:description. The text under the headline. About 155 characters is a good length.
- og:image. The image shown on the card. Recommended size: 1,200 by 630 pixels, at least 200 by 200. Must be a full https:// URL.
- og:url. The canonical URL of the page. Should match the canonical tag. When it does not, platforms may cache the wrong version.
- og:type. Usually "website" or "article". Affects how some platforms treat the link.
Questions about the open graph checker
What are Open Graph tags?
They are tags in the page code that tell social networks and chat apps which title, description and image to show when a link is shared.
What size should an Open Graph image be?
A common choice is 1200 by 630 pixels.
Do Open Graph tags help SEO?
Not directly. They improve how a shared link looks, which can bring more clicks from social networks.
Does SEOSage check these tags?
Yes. A crawl checks Open Graph and Twitter card tags across your pages.
Check every page of your website
SEOSage crawls your whole website on your own computer, with no page limit, and lists what to fix. Free for 14 days, cancel any time.