Just shave 32 pixels off the left side of each document in literally any image editing program including MS Paint. You don't have to be amazing, good, and you can even suck at using any image editing program. All you need to know how to do at the extreme basics is know how to count up to at least 32. If you must use MS Paint, just use the pencil tool, zoom in, and starting from the far left side, make 32 dots, then move image and change the document size by grabbing the lower right corner. Super easy.