edit your PDFs as the best. 1.- It's Free. although there are some functions that are paid, for daily use just a free account which is very good. 2.- Pretty friendly and friendly interface. Everything is understandable and the use of the program is very easy to understand. 3.- Its use can be integrated with dropbox, googlr drive, box and onedrive. 3.- You can use files that are in your pc, your cloud or in some website (in this case you just have to enter the link). 4.- with the built-in editor you can add images, scratch, write in the text, delete sectors, hide words or paragraphs with black, add lines, and many other things. 5.- You can save your work in pdf, word, excel or powerpoint format. It also includes the option to send via mail, fax or simply share the link. the bad thing, is that if or if you must register to use it, which perhaps is not something serious, but the program forces you to do so.