Open Graph Checker

Four form the core: og:title, og:description, og:image and og:url — supported by og:type (website/article/product) and og:site_name. The image does most of the work in a feed: use an absolute URL to a 1200×630 px image (1.91:1), under 8 MB, with the subject centred because platforms crop edges differently. For X/Twitter, add twitter:card (summary_large_image) plus twitter:title, twitter:description and twitter:image — or rely on its OG fallback, which usually works but is not guaranteed.

Platforms cache what they scraped the first time a URL was shared, sometimes for weeks. Facebook offers a Sharing Debugger to force a re-scrape; LinkedIn has a Post Inspector; WhatsApp has no official tool — sharing the URL again sometimes refreshes it, and adding a query string (?v=2) makes it a "new" URL for scraping purposes (fine for sharing, though the canonical tag should keep pointing at the clean URL). This checker always reads the live page, so it shows what a fresh scrape would get.

Platforms improvise: the title tag becomes the headline, the first paragraph or meta description becomes the summary, and some large image from the page — possibly a logo, a banner ad, or nothing — becomes the picture. Sometimes the improvisation is acceptable; often it is a stretched logo or an unrelated image. The missing-tags list in this checker tells you exactly which essentials a page lacks, in priority order.

Not directly — search engines do not rank pages by their OG tags. The effect is indirect but real: good-looking shared links earn more clicks, shares and referral visits, and those bring the links and engagement that do move rankings. Google also occasionally borrows og:title or og:image for results and Discover. Think of OG tags as packaging: they do not change the product, but they decide whether anyone picks it up.