Open Graph and Twitter card checker.

What Open Graph tags do

When a link is shared, the platform fetches the page and looks for Open Graph tags (og:title, og:description, og:image) to build the preview card. X reads its own twitter: tags first and falls back to Open Graph. WhatsApp, LinkedIn, Slack, Teams and most messaging apps use Open Graph too.

Without these tags, platforms guess. They might show your logo cropped into a square, a random photo from the page, or no image at all, and a link with no picture gets far fewer clicks.

The ideal share image

• 1200 x 630 pixels: the 1.91:1 shape every major platform shows as a large card.
• JPG or PNG, under about 1 MB so it loads quickly in chat apps. WebP works on most platforms but not all.
• Important text and faces in the centre, away from the edges, which some apps crop.
• An absolute https:// URL, not a relative path.
• A different image per page where it matters (blog posts, services), not one logo for everything.

When the preview won't update

Platforms cache previews, sometimes for weeks. After you fix your tags, use the Facebook Sharing Debugger and LinkedIn's Post Inspector to fetch the page again. WhatsApp caches per chat, so test by sharing in a new conversation. X refreshes on its own within about a week.

Our meta tag generator writes the full set of tags for you. If you'd rather it was handled site-wide, it's part of how we set up pages in our digital marketing and web design work.