The Social Sharing Ecosystem
When you share a link, a preview is generated. Facebook uses Open Graph, while Twitter uses its own proprietary system called Twitter Cards.
Twitter Cards Explained
Twitter offers a specific set of meta tags that dictate how your content looks on their platform. The most common type is the summary_large_image card.
<meta name="twitter:card" content="summary_large_image">
<meta name="twitter:title" content="Your Awesome Title">
<meta name="twitter:description" content="A brief description of your amazing content.">
<meta name="twitter:image" content="https://example.com/image.jpg">
Do I Need Both?
Technically, if Twitter cannot find Twitter Card tags, it will fallback to using Open Graph tags. However, relying on fallbacks is risky. Twitter often struggles to render standard OG images properly, resulting in small thumbnail images instead of full-width banners.
Best Practice: Always declare "twitter:card" explicitly, even if you are using Open Graph tags for everything else. This guarantees that your content looks stunning across every single platform.