This free Windows tool lets me convert almost any file to another format – here's how

With the free File Converter program, you can easily convert images, videos, and audio files to other formats.
Yahoo

How to Change File Extensions in Windows 11: Four Simple Methods

Add Yahoo as a preferred source to see more of our stories on Google. This guide explains how to change the file extension in Windows 11. It also clarifies the distinction between file extensions and ...
Hackaday

One File, Six Formats: Just Change The Extension

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. However, [PortalRunner] has ...

Changing the extension does not make it a PDF. How to check file types in Windows 11

You were asked to "send it as a PDF," so you changed the end of the filename from ".docx" to ".pdf" and sent it. However, the ...