Right-click the mouse on the image you want to use as the icon of the executable file. Select "Properties" from the context menu. Go to the General tab.
Look at the heading "Type of file" at the top of the window. Check whether the image format ".ICO". Close the Properties window. If the image is great.ICO format, then go back to the desktop and launch the web browser.
Go to the website http://iconverticons.com/. Click on the "Browse" button and select the image file you want to use as the icon. Click on the name of the file and select "OK".
Click the "Convert" button. Wait for new pages converted to icon file picture. Press "Download ICO". Note the folder where will be sent in the converted icon file.
Navigate to the executable file and click the right mouse button. Select "Properties" and navigate to the tab "Shortcut". Click the "Change icon" in the bottom of the window.
Select in the menu "Overview". Find the created iconthat you downloaded previously. Click on the name of the file and click "OK". Select "Apply" to change the icon.
You don't necessarily need to use your own image files to create an icon. If you want to choose one of the standard icons supplied with the operating system, just select by clicking at the file properties the "Change icon" and press "Browse".
If your computer is running an operating system other than Microsoft Windows, the process of changing the icons of a file may be somewhat different. The website http://iconverticons.com/ includes options to convert images to icon with the extension that also supports Mac and Linux system.