Open Graph (og: tags).

The Open Graph protocol was originally introduced by Facebook and is now the de facto standard for how links look when they are shared. Meta tags in the head of the document — og:title, og:description, og:image and og:url — let a page decide which title, description and preview image appear when someone posts the link on LinkedIn, Facebook, WhatsApp or almost anywhere else. Without them, the page has no say in its own first impression.

Where Open Graph tags are missing, platforms guess at the text and image themselves, and the result is often unattractive or simply blank. A deliberately designed og:image — 1200 by 630 pixels is the recommended size — turns a bland text link into an inviting preview card, and that lifts the click rate of shared posts noticeably. For a brand that wants to look professional in a busy feed, it is a small detail with an outsized effect.

A close relative is the Twitter Card (twitter: tags) used for display on X, though many platforms fall back to the Open Graph values anyway. Open Graph itself is not a direct ranking factor, but it works indirectly: more clicks and shares mean more traffic, more visibility and potentially more backlinks. Setting the tags once per template and generating the image automatically per page is usually a day's work with a permanent effect.

An example: a company publishes a blog article and defines an og:image carrying the title and its branding, plus a concise og:description. When the article is shared on LinkedIn, a clean preview card appears instead of a bare link — the post stands out in the feed and gets clicked more often. Always test the result with the platform's own debugger, because caches keep old previews alive far longer than you would expect.