: While direct URL manipulation is restricted for privacy, entering the Owner ID into a search engine or the Facebook search bar can sometimes lead back to the original public post or page. Everything you need to know about JPEG files - Adobe

If you are trying to identify what is actually in the photo:

Because these filenames are generated automatically for millions of uploads daily, the name itself does not describe the content of the image (e.g., a landscape or a person). Instead, it acts as a digital fingerprint.

: This is a version or sequence identifier used for internal tracking.

: This suffix typically denotes the size or "normal" resolution of the image.

: This identifies the "Owner ID"—the profile, page, or group where the image was originally posted.