I would suggest PDFelement for combine PDF documents easily. It is all in one tool where you can edit, merge and covert PDF easily. Mostly large documents management can be time-consuming. If we combine PDF documents into one you can increase productivity and easily modifying PDF. This software very easy to use. When you open the software by click on Combine file option you can add that file from your local computer that you want tp combine. One of the other way is when you launch the software click on the option "Back" and go to the main interface and select the option "Tool" then click on "Combine Files" to choose files to add files. After adding documents you can also manually select the files or pages that you want to combine and click on the apply button.
It is super simple to use. We have also tried to see how many steps are needed for combining PDF document into one. We have tested this software on PC as well as on MacBook on Windows 10. It works well on both types of computers, but it is not the latest version. You can try the free 15-day trial to see how good the software is before committing your hard-earned money. We highly recommend the software as both PC and laptop are the most convenient to have it installed.