| User Agent |
|---|
| Mozilla/5.0 (compatible; Meta-ExternalAgent/1.1; https://developers.facebook.com/docs/sharing/webmasters/crawler) |
| meta-externalagent/1.1 ( https://developers.facebook.com/docs/sharing/webmasters/crawler) X-Middleton/1 |
| meta-externalagent/1.1 ( https://developers.facebook.com/docs/sharing/webmasters/crawler) |
| meta-externalagent/1.1 |
| meta-externalagent/1.1 (+https://developers.facebook.com/docs/sharing/webmasters/crawler) |