It’s also still in active development so missing file types can be added in the future. TrID is probably the most comprehensive and well known file identification utility around. If you’re looking for a more generic solution for identifying unrecognized file types, here are six options to help you find unknown files or files that have been given the wrong extension. Thankfully, we’ve previously covered this specific topic and you can read about recovering CHK Files created by CHKDSK and SCANDISK for more information. In fact, Windows even does this when running a CheckDisk because any corrupted files it recovers are simply named File****.CHK and you have to find the extension yourself to rename it back. The possibilities are almost endless as to the extension you could give a file when you don’t know what it really is. In that case, the file could be an executable, an Office document or an MP3, or a zip archive. It’s possibly happened to you before that you download or receive a file and it has no extension at all or something rather obscure that doesn’t look correct. jpg for example, and when you double click on one of those files, the system knows what the file is and what to do with it. This is usually achieved by looking at the file extension of. With so many different types of files around these days, it’s important that every file you try to open or execute is correctly identified by Windows.

Exiftool windows multiple files