filename extension
After the dot
A filename extension is the suffix after the final dot in a computer filename, indicating the file type or format: .txt for text files, .jpg for images, .exe for Windows programs.
Operating systems use extensions to determine which application should open a file.
The email attachment had a suspicious .exe extension.
- file formatData organization specification
- file typeDigital document category
- executableDirectly runnable program file
- save asStore with new name
- double clickTwo rapid consecutive presses
open with · markup language · script · file manager · archive · zip file · text file · data type · download · designation · file system · upload · PDF · data compression · suffix · codec · dot · JPEG