Windows 7 to Windows 8.1 Start Button Converter is a freeware from door2windows which lets you easily convert existing Windows 7 start orbs (in .BMP or .PNG) to Windows 8.1 start buttons for use with Windows 8.1 Start Button Changer or CustomizerGod.
Apps from door2windows are truly free and DON'T include any offers to install 3rd-party apps/adware/toolbars/unwanted software and never will. The apps are portable and don't require installation.
Download door2windows App Bundledoor2windows App Bundle gives you access to all the latest apps released by door2windows in one download (along with future updates).
How To Use:
Run the app.
To convert a single start orb click the … button near the File Path textbox. To convert a bunch of start orbs in a folder click the … button near the Folder Path textbox.
The folder containing the converted start orb(s) will open. You can now use the converted start orbs in Windows 8.1 Start Button Changer.