What it is for
OG Scope is a small developer tool. You give it a public URL. It fetches that page on the server, reads the Open Graph and Twitter card tags, and shows estimated cards for Facebook, LinkedIn, and X. It also lists each value and checks the Open Graph image.
What it does not do
It does not sign you in, and it does not keep a history of searches. A successful result may sit in memory on the server for about ten minutes so the same URL is not downloaded again immediately. That cache is not a database, and it is gone when the process restarts.
The server will not request localhost, private network addresses, or link-local addresses such as cloud metadata endpoints. Redirects are checked again before they are followed. The raw HTML of the target page is not sent to your browser.
Limits worth knowing
The cards are estimates. They are not screenshots of Facebook, LinkedIn, or X, and this site is not affiliated with those companies. Tags injected only by JavaScript will not appear. A site can also block the request. The public service uses a simple in-memory rate limit, which is enough for one server and can be replaced with Redis if you run more than one.
Start with the URL analyzer, or read the Open Graph preview guide.