File Extension generator

Last modified: April 3, 2025

The File Extension generator produces a variety of realistic or randomized file extension values (e.g., .txt, .jpg, .docx, .csv) that can be used for testing software systems that handle file types, validate inputs, or simulate scenarios involving file processing.

Generator properties

The table provides key details about the generator, including the short name, sample of the generated data, the supported data types, and whether it is specific to a particular country.

Short name	Example of generated data	Data type matching	Country-specific
File Extension	doc, jpg, html, txt, xlsx, pdf, …	character varyingcharacter	Default

Matching rules

The generator can be assigned to a column whose name is ‘fileextension’ or ‘extn’, regardless of the table name.

Configure additional settings

The tool allows you to define the preferable types of file extensions.

Preview of the column data generated by the File Extension generator