19k+ file extensions explained, verified on real systems and kept up to date - since 2014.
Files with the .dll extension contain dynamically linked libraries shared within Microsoft Windows. The .dll format uses the same binary structure as .exe files - the Portable Executable (PE) format, identified by the MZ magic bytes at offset 0 and a PE\0\0…
File formats, the programs that open them and how to convert between them - with the technical details in one place. Browse everything →