2. Click the Toolset tab in the lower left corner.
3. Click rename.
4. Enter the "Rename" dialog box, click "Browse" in the upper right corner, and select the folder where the file to be renamed is located on the computer.
5. Click the inverted triangle of the format option, and then select the renamed format.
6. Click the "Rename" button in the lower right corner.
7. Rename (16) file name pops up (the number of renamed files is displayed here), and click OK.