The og:type Bug Three of My Astro Sites Quietly Shipped

I run four Astro sites. Three of them shipped the same SEO bug for months. Every blog post on those sites told Twitter, Facebook, and LinkedIn that it was a website — not an article . Here is what happened, why I did not catch it sooner, and the one-line build check that would have caught it on day one. What "og:type" actually does When you paste a URL into Twitter or LinkedIn, the platform fetches the page and reads the Open Graph meta tags to decide what card to show. The most consequential of