Website Builder includes an image editor so you can edit and enhance your images without having to use third party software.
Open The Image Editor
Click the images tab (1). Move your mouse over any image (don't click, just hover) and you will see some icons. The paintbrush icon (2) will open the image editor.
Using The Image Editor
Select an image edit mode (1). Click the save button (2) when you are finished.
Adding The New Image To Your Page
Every time you save an image, a new version is created and this will appear in the top of the images tab (1). Drag and drop this onto your page to use it.