This is PDF combiner or merge Tool which very is to use and faster and easy to use there different with other this will tell pages you want to merge or combine, Follow this few step will help you to use it faster, step 1: press on select step2:select documents step 3: you can align PDF documents by using drags using your computer or touch screen you may put last to first or second to third whatever you want step: there two buttons red black, red is remove, black is to make full view which can help you to read text on PDF before merge so as you can merge good documents, step 5: press on merge will autmatically download your document, if you like this share with your freinds