Check a page
Open Graph and meta tag checker
See how a page's link will look when it's shared on Facebook, LinkedIn, X and Slack, and in Google's results, then check the Open Graph, X and meta tags behind each preview.
Free · No signup · Reads public pages only
How it works
Paste the address of the page you're about to share.
We read its meta tags, then check the share image: whether it loads, its real size in pixels and how heavy the file is.
You get a preview for each network and a short list of tags to add or fix.
What Open Graph tags are
When you paste a link into Facebook, LinkedIn or Slack, the app fetches the page and looks for Open Graph tags: meta tags in the page's head that say which title, description and image to show. The Open Graph protocol, documented at ogp.me, started at Facebook and is now read by most apps that make link previews. Its four basic properties are og:title, og:type, og:image and og:url.
X reads its own twitter: tags first and falls back to the Open Graph ones when they're missing. Without any of these, each app guesses, usually from the page title and the first image it finds. That's how a carefully written page ends up shared with a cookie banner icon as its picture.
What this checker looks at
- og:title and og:description: present, and short enough not to be cut off in most previews.
- og:image: a full https address that loads, its real size in pixels compared with the commonly recommended 1200 × 630, and its file size.
- og:url: it should match the page's canonical address, so every share points at one URL.
- og:type: website for most pages, article for blog posts and news.
- twitter:card: summary_large_image gives you the big image on X; summary gives a small square one. twitter:image only if you want a different picture there.
- The title tag and meta description: what Google shows, which is a separate preview from the social ones.
The image facts come from fetching the image itself, not from the width and height tags, because those tags are often wrong or left over from an older image.
Getting the share image right
1200 × 630 pixels, roughly 1.91 to 1, is the size most guidance recommends, and it fills the large preview on Facebook, LinkedIn and X. Smaller images may be shown as a small thumbnail beside the text instead, and below about 200 × 200 many apps ignore the image altogether. Keep text and logos away from the edges, because each app crops a little differently, especially on phones.
Keep the file light. The limits are around 5 MB on X and 8 MB on Facebook, but a heavy image is slow for the app to fetch and some give up waiting. JPEG and PNG are the safest formats; not every app shows WebP, and SVG share images generally don't work.
The most common mistake is a relative address like /images/share.png. The Open Graph protocol asks for a full URL, and many apps won't work out the rest for you. The second is an image on a server that blocks unfamiliar bots, so the preview works in your browser and nowhere else.
Why your fix doesn't show up yet
Apps cache previews. Once Facebook or LinkedIn has fetched a page, they keep showing the old title and image for a while, even after you've changed the tags. Facebook's Sharing Debugger and LinkedIn's Post Inspector both let you fetch the page again and refresh their copy. X and Slack refresh on their own schedule; sharing the link with a small query string added, like ?v=2, often makes them fetch it fresh.
The previews on this page are our drawings of each network's layout, made from your tags. The networks change their designs from time to time and crop differently in their apps, so treat them as a close guide rather than a screenshot. And if your site blocks bots it doesn't recognise, the networks' own crawlers may be turned away even when our check works.
Questions people ask
Do Open Graph tags help SEO?
Not directly: Google doesn't rank pages on them. Google's documentation does list og:title among the places it may take a result's title from. Their real job is deciding how your link looks when it's shared, which affects whether people click it.
What size should my og:image be?
1200 × 630 pixels is the safe choice for Facebook, LinkedIn and X's large card. Save it as a JPEG or PNG and compress it so it loads quickly. Keep the important parts of the picture near the middle.
Do I need Twitter tags if I already have Open Graph tags?
Mostly no. X falls back to og:title, og:description and og:image. Add twitter:card set to summary_large_image so X shows the big image, and add the other twitter: tags only if you want different text or a different image on X.
Why does LinkedIn still show my old image?
LinkedIn cached the preview the first time someone shared the link. Paste the URL into LinkedIn's Post Inspector to make it fetch the page again. Facebook's Sharing Debugger does the same for Facebook.
Is this Open Graph checker free?
Yes. No signup, no limit you'll hit in normal use. It only reads public pages.
Want it done for you?
Romeo fills in the share tags on every page
He finds pages with missing or broken titles, descriptions and Open Graph tags, writes them to match what each page is about, and sends the changes for you to approve before anything goes live.
