If you are looking for a convenient and functional PDF Editor that can be used on different devices, I recommend NotatePDF. This tool impressed me with its simplicity and versatility. The first thing worth noting is the ability to work with documents in the browser, which makes it available on any device, be it a computer, tablet or smartphone. The interface is very intuitive, and even if you have no experience with PDF editors, you will quickly understand the basic functions. NotatePDF offers all the necessary tools for editing documents: you can add text, annotations, highlight important points and even insert images. There is also the ability to merge several PDF files into one, which is extremely convenient for preparing reports or presentations.