prerender[ OBSERVATORY ]
[ Machine ] [ Link previews ]

facebookexternalhit

Meta's link preview crawler. This page launches with every fact marked as not yet observed, and fills in as the site checks Meta's documentation and records verified visits.

OperatorMeta
What it's forLink previews on Facebook and WhatsApp
Renders JavaScriptNot yet observed
Verify byNot yet observed

Who runs it

Meta. It names itself with the token facebookexternalhit. Not yet observed: its full user agent string.

User agent
Not yet observed

What it does

Not yet observed.

Renders JavaScript

Not yet observed.

How to verify it

Not yet observed.

robots.txt

Not yet observed.

Questions

Why does this page say not yet observed?

This site only prints a fact once it has read the operator's own documentation or recorded a verified visit. Neither exists for this machine yet.

Last checked against Meta's documentation: 31 Oct 2026Verified visits recorded here: shown once the site is live
Sources
Not yet observed