How to Change a File Extension

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posted on 13 years ago — updated on 1 second ago

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Do you need to change the extension of a file so you can open it in a different program? Renaming a file in Finder or File Explorer won't be enough—you'll need to save the file in a different format from a program. But don't worry—it's super easy! This wikiHow article will teach you how to change a file's extension by saving it in a different format. We'll also show you how to show hidden file extensions in Windows and macOS so extensions are always visible.

How do you change a file type?

Changing a File Extension in Nearly Any Software Program

Open a file in its default software program.

Click the File menu and then click Save As.

Choose a location for the file to be saved.

Name the file.

In the Save As dialog box, look for a dropdown menu labeled Save As Type or Format.

Choose a new file type for the file from the dropdown menu.

Click the "Save As" button. The original file will still be open in the software program.

Find the new file where you chose to save it.

Making File Extensions Visible on Windows

Open the Control Panel. Click the Start menu, and then click Control Panel. If you're using Windows 8, click here.

Click Appearance and Personalization. You can find this in the Control Panel. On Windows 8, in the ribbon, click Options.

Click Folder Options.

Click the "View" tab, in the Folder Options dialog box.

Make file extensions visible. In the Advanced settings list, scroll down until you see Hide extensions for known file types. Click the box to uncheck it.