OG Image Checker

Enter a URL to see the Open Graph image and social preview it produces on Facebook, X, LinkedIn, and Slack — exactly as their crawlers see it.

Check a page

Some sites serve different meta tags to crawlers than to browsers. Switch this to compare.

Enter a URL and click Check to see how the page previews on social media.

Getting social previews right

🖼️ Image size

  • • 1200×630px is the safe default (1.91:1)
  • • Minimum 200×200px, or platforms skip it
  • • Keep it under 5 MB — under 1 MB is better
  • • Use JPG, PNG, or WebP. SVG is not supported

🔗 URLs

  • • Always use absolute URLs in og:image
  • • Serve over HTTPS or the image may be dropped
  • • The image must be publicly reachable, no login
  • • Don't block crawlers in robots.txt

🐦 X / Twitter

  • • Set twitter:card to summary_large_image for a wide image
  • • X falls back to og:image when twitter:image is absent
  • • Without a card tag, you get the small summary layout

♻️ Caching

  • • Platforms cache previews, often for days
  • • After changing tags, re-scrape in the platform's debugger
  • • Changing the image filename forces a refresh
  • • Add og:image:alt for screen readers