Change method: First click the "Computer" icon, select the "Tools" tab at the top of the page, select "Folder Options" in the pop-up drop-down list; then select the "View" tab and check " "Hide extensions for known file types"; finally, right-click the specified file, select "Rename", and change it to the specified suffix.
The operating environment of this tutorial: Windows 7 system, Dell G3 computer.
Click "Computer" on the desktop.
Find "Tools" in the pop-up panel and click "Folder Options" in the tool drop-down menu.
Find "View" in the window
Find "Hide extensions for known file types" in the advanced settings Name", remove the previous check box and click OK
Left-click to select the file whose suffix needs to be changed, right-click, select Rename in the drop-down menu, and modify Just change it into the suffix you need.
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