It is not easy to find a free PDF editor that lets you not only edit the text and add images but also create an entire new PDF document. PDF was propriety of Adobe till 2008, after that it was released as an open standard for all. The free version of Adobe Acrobat can be used for only reading a document it does not allow any editing or modification whereas the paid version allows the user to create a pdf and edit it.
For years whenever we hear the word PDF, only Adobe Acrobat used to come to our mind.