Detect unknown file types, regardless of extension, with TrIDNet

If you have a file with a wrong extension or even without any extension at all, and you need to open it, you can try TrIDNet,  a little program that attempts to determine a file’s type using a database of known formats. The TrIDNet database is updated with new formats constantly.

TrIDNet (or TrID) is a utility designed to identify file types from their binary signatures.

While there are similar utilities with hard coded rules, TriID has no such rules. Instead, it is extensible and can be trained to recognize new formats in a fast and automatic way.

TrIDNet uses an XML-based database of definitions which describe recurring patterns for supported file types.