The Command Prompt simplifies editing file extensions for multiple files at once, as long as they're in the same folder. Use asterisks (*) to avoid specifying each file by name.

On Windows 11, you can change the format of a file in multiple ways through File Explorer, Command Prompt, and from a compatible application. In this guide, I'll show you how.

Normally, if you change a file’s extension in Windows, it doesn’t do anything positive. It just makes the file open in the wrong programs that can’t decode what’s inside.

Do you want to open a file type or link with a specific app? Here's how to change the default app settings on Windows 11.