It is possible to use an Adobe Acrobat program to comment on PDFs. To see how to do this, view a video from LinkedIn Learning, which covers three different Adobe Acrobat versions.
NOTE: To watch the video you will be prompted to log in through a "Single Sign-On" process using your UW-W Net-ID and password.
If you do not have any version of Adobe Acrobat, you may wish to download the free Adobe Acrobat Reader to take advantage of the annotation feature.
You can use the commenting feature in Google Drive to highlight and comment on Microsoft Word documents and on PDFs. You can also share these files with others who can comment on them as well.
When you leave a comment on a PDF, it will show up in some PDF reader apps, but not all.