How postgresql.org Looks on Facebook
postgresql.org is missing a twitter:card tag, so Twitter may not render any preview at all. Missing: twitter:card. The previews below show exactly how a link to postgresql.org looks on Facebook.
Facebook preview
Large card (image ≥ 600px wide)

www.postgresql.org
PostgreSQL
The world's most advanced open source database.
Compact card (image < 600px wide)

www.postgresql.org
PostgreSQL
The world's most advanced open source database.
Your 540x557 image will be cropped to 1.91:1. Use 1200x630 to fit Facebook's card. Fix
Your social image needs work
Your 540×557 image (0.97:1, measured) gets cropped on Twitter, Facebook, and LinkedIn. Use one of the sizes below for predictable rendering.
Frequently Asked Questions
og:type as article. This tells Facebook how to categorize the content when generating a preview.See postgresql.org on other platforms
Same domain, different platform-specific report.
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