Question 1

Why does stackoverflow.com's Twitter card show a small image?

Accepted Answer

stackoverflow.com sets `twitter:card` to `summary`, which renders the image as a small thumbnail. To get the large hero image format, the meta tag would need to be `<meta name="twitter:card" content="summary_large_image">`.

Question 2

What Twitter card type does stackoverflow.com use?

Accepted Answer

stackoverflow.com uses the `summary` card type. This renders a small square thumbnail next to the title and description.

Question 3

Does stackoverflow.com declare image dimensions?

Accepted Answer

stackoverflow.com sets `og:image` but does not include `og:image:width` and `og:image:height`. Explicit dimensions let platforms render the preview faster without downloading the image first.

Question 4

What headline does stackoverflow.com use for social previews?

Accepted Answer

stackoverflow.com's social headline is "Newest Questions" (16 characters).

Question 5

What description does stackoverflow.com use for social previews?

Accepted Answer

stackoverflow.com's social description reads: "Stack Overflow | The World’s Largest Online Community for Developers" (68 characters).

Question 6

What site name does stackoverflow.com display on social cards?

Accepted Answer

stackoverflow.com sets `og:site_name` to "Stack Overflow". This appears as a small attribution label on Facebook, LinkedIn, and Slack.

Question 7

How can I improve stackoverflow.com's social previews?

Accepted Answer

Review the recommendations above - they list specific issues and provide ready-to-paste meta tag snippets. The highest-impact fixes are usually a properly sized `og:image` (1200×675), a clear `og:title` under 60 characters, and a 50-155 character `og:description`.

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