ScreensieHow to Show File Extensions
How do I show File Extensions?
In File Explorer select View > Show > File name extensions.
Make Windows display extensions such as .pdf, .jpg, and .exe.
Follow the steps in order and stop if the screen or target does not match what is described. Use administrator access only when the task requires it.
Open File Explorer
Press Windows + E.
Open View options
In Windows 11 select View > Show. In Windows 10 select the View tab.
Enable extensions
Select File name extensions.
Use the full name for safety
Check the final extension before opening downloads; a file named invoice.pdf.exe is an application, not a PDF.
Rename carefully
Changing an extension does not convert a file and can stop its application from recognizing it.