Question 1

What is stackoverflow.com's Open Graph type?

Accepted Answer

stackoverflow.com declares `og:type` as `website`. This tells Slack how to categorize the content when generating a preview.

Question 2

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 3

What headline does stackoverflow.com use for social previews?

Accepted Answer

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

Question 4

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 5

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 6

What's the biggest issue with stackoverflow.com's Slack preview?

Accepted Answer

Image won't fit social cards (360×360, 1:1). Your square-ish image will be cropped to 1.91:1 on Facebook, LinkedIn, and Slack, and to 2:1 on Twitter. Use 1200×630 (universal) or 1200×675 (Twitter-optimized) for predictable rendering.

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` (800×418), a clear `og:title` under 60 characters, and a 50-155 character `og:description`.

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