Today I came with a small Windows tip on how to batch rename file extensions in windows.
How To Batch Rename File Extensions in Windows:
Step 1: Open Command Prompt in Windows. Open Run window [Windows key + R] and type cmd and hit Enter. or Press Windows Key + X and Open Command Prompt.
Step 2: Navigate to the folder were you want to Batch Rename File Extensions.
Step 3: Now type
Eg: rename *.* *.jpg
Step 4: Now it will rename all the files in the folder with .jpg extensions.