20 Free PDF Tools to Annotate PDF Documents

If you work with PDF documents, you know how important it is to have a good set of tools at your disposal to help you annotate them efficiently. Whether you’re a student marking up textbooks, a professional reviewing contracts, or just someone who likes to add notes to their favorite ebooks, having access to the right PDF annotation tools can make all the difference. In this blog post, we’ve compiled a list of 20 free PDF tools that can help you annotate your PDF documents quickly an