Filename Extension Column is an application (or website) that allows users to quickly and easily identify the type of file they are looking at. It provides a detailed list of common file extensions, including descriptions of common file types, such as audio, video, image, and document files. Additionally, it can also detect and identify rare or uncommon file extensions, allowing users to determine the type of file without needing to open it. This can be especially useful for avoiding malicious files or for determining the type of file without needing to open it.
Discontinued website only shows "Coming soon".