Open Graph and Twitter Card tags
Also known as OG tags · social meta tags · social share tags
Open Graph and Twitter Card meta tags tell social platforms and chat apps how to render a link preview: its title, description, and image.
What it is
Open Graph is a protocol of <meta property="og:*"> tags (og:title, og:description, og:image, og:url, og:type) that define a page's social representation. Twitter/X Cards add <meta name="twitter:*"> tags such as twitter:card to control the preview on X.
Why it matters
These tags control the rich preview shown when your page is shared on social media, messaging apps, and increasingly in AI tools that unfurl links. A compelling, accurate preview increases share click-through and reinforces consistent branding and entity signals across platforms.
How to verify
View source and confirm og:title, og:description, og:image, and twitter:card exist in <head> with absolute image URLs. Use a sharing debugger such as Facebook's Sharing Debugger or the LinkedIn Post Inspector to render and refresh the preview.
How to fix
Add og:title, og:description, og:image (at least 1200x630 px, absolute URL), og:url, and og:type, plus twitter:card set to summary_large_image. Keep these in sync with the page title and description, and re-scrape via a debugger after changes to clear cached previews.
Related terms
- Title tagThe <title> element in a page's <head> defines its canonical name, shown as the clickable headline in search results and as the browser tab label.
- Meta descriptionA <meta name="description"> tag that summarizes the page in one to two sentences and is often used as the snippet under the title in search results.
- Favicon and touch iconSmall site icons declared via <link rel="icon"> and <link rel="apple-touch-icon"> that appear in browser tabs, bookmarks, mobile home screens, and search results.
- JSON-LDJSON-LD is a JSON-based format for embedding machine-readable structured data in a page using a script type="application/ld+json" block. It is Google's recommended way to describe entities like organizations, products, and articles.
Official references
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