Question 1

What is react.dev's Open Graph type?

Accepted Answer

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

Question 2

Does react.dev declare image dimensions?

Accepted Answer

react.dev 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 react.dev use for social previews?

Accepted Answer

react.dev's social headline is "React" (5 characters).

Question 4

What description does react.dev use for social previews?

Accepted Answer

react.dev's social description reads: "React is the library for web and native user interfaces. Build user interfaces out of individual pieces called components written in JavaScript. React…" (260 characters).

Question 5

What's the biggest issue with react.dev's Slack preview?

Accepted Answer

Description is 260 characters - truncated on most platforms. LinkedIn cuts at ~100, Facebook at ~130, Google at ~160 characters.

Question 6

How can I improve react.dev'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`.

How react.dev Looks on Slack

Slack preview

Slack

Recommendations

Analysis

Frequently Asked Questions

See react.dev on other platforms

Validate other sites on Slack

Validate your own URL