Method for modifying file extensions in Win10 system

In the process of using a computer, there are often some minor problems, but these minor problems can be fixed by modifying the file suffix name (extension). However, for a relatively large Win10 user, how to modify the file extension (extension)?
Win10 file extension (extension) modification guide
1. Open the desktop “ (As long as the File Explorer is enabled), check the <;file extension” option to display the file suffix on the View tab.
2. Right click on the file whose suffix name you want to modify and select “Rename”.
3. Select the text after the dot (.) and change it to the new suffix name. For example, change "ldquo;txt" to "ldquo;jpg". After the modification, click the mouse in other places or press the Enter key ( Enter).
4. The pop-up rename warning window selects “ is & rdquo;
Modifying file suffixes (extensions) is a very useful computer skill, so this tutorial is also very important. Newbie users who don't know how to modify the file suffix (extension) may wish to come here. Look at it.