I checked the Open Graph tags on 62 homepages. Here's what's actually broken.

I examined the Open Graph tags on 62 homepages of well-known domains. Open Graph tags themselves don't impact search rankings, but they do determine how a link is displayed, either as a card with an image or a plain grey link. I analyzed the meta tags with properties starting with og: or twitter:. Out of 62 usable pages, the findings were as follows:

1. Open Graph tags were nearly universal, found on 90% of the homepages. However, the various tag types were not equally represented. For instance, 87% had an og:title tag, 85% had an og:description tag, but only 65% had an og:site_name tag. Only 35% had an og:locale tag.

2. Twitter cards were less common, with 55% of the pages declaring twitter:card = summary_large_image. A significant 19% didn't declare any twitter:card at all. Without twitter:card, platforms fall back to Open Graph, using a plain link instead of the card layout.

3. Regarding image tags, 77% of the pages declared an og:image tag, but only 77% of those had an actual image. The most egregious failure was when a site declared an og:image tag with no content attribute, making the image invisible. An example was forbes.com, which had such a tag but no accompanying image.

4. Only 23% of the pages declared both width and height for their og:image tag. The absence of dimensions forces platforms to download the image first, which can lead to intermittent display issues if the image fetch is slow or blocked.

5. Finally, among the pages with usable images, only 23% declared dimensions for the image. Four SEO-focused sites -- Moz, Screaming Frog, Yoast, and Search Engine Journal -- were particularly diligent in declaring image dimensions, as were several major tech sites.