The original poster's link was: http://imgur.com/Tvqan.jpg
The "http" indicates that the H
rotocol is used to transfer the requested file(s). Sometimes you will see "https", which is s
ecure (encrypted) HTTP.
The "imgur.com" is the domain name of the server (computer) from which the files are downloaded. The server reported as untrustworthy above was tvqan.com, not imgur.com. Therefore, the software
reporting that the imgur.com site is untrustworthy is in error.
The "Tvqan.jpg" is the file downloaded. In this case, the file is a JPG image, assuming that the file extension (.JPG) is accurate. There's nothing to enforce that a file with a .JPG is actually an image.