Question 1

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

Accepted Answer

open.substack.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 open.substack.com use?

Accepted Answer

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

Question 3

Does open.substack.com declare image dimensions?

Accepted Answer

open.substack.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 open.substack.com use for social previews?

Accepted Answer

open.substack.com's social headline is "Substack - A new economic engine for culture" (44 characters).

Question 5

What description does open.substack.com use for social previews?

Accepted Answer

open.substack.com's social description reads: "Substack is a media platform for video, writing, podcasts, and creator-centered communities, all powered by subscriptions." (122 characters).

Question 6

What's the biggest issue with open.substack.com's Twitter / X preview?

Accepted Answer

URL redirected (1 redirect). Original: https://open.substack.com

Question 7

How can I improve open.substack.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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