It is impossible to add all the annotations one wishes to create, however, you can simply click on the arrow button to bring up a pop-up window that will allow you to drag the highlighted region of text around. If there are annotations already added, they will be highlighted, and any newly added ones will be underlined in yellow. As with most tools, the interface is a little confusing, and in some cases, not very informative. You can add annotations to PDF files for free by using the latest version of the Google Drive (beta 8+) file format () or Microsoft OneNote. For this, you need either a free OneNote Online account or a paid subscription (free). You can use the text and image annotation features for free. You can download Google Drive (beta 8+) and install the latest version of OneNote, Word, Excel, or PowerPoint directly on Windows PC or Mac. The free version of OneNote can be used with up to 200 MB of online storage, while the paid version (Office 365 Peoples) offers unlimited online storage and also allows you to store files in other cloud providers, so you can access them from anywhere. How to annotate an HTML PDF in Microsoft Office 10 Apr 2023 — For more detailed information on how to annotate PDF files in Microsoft Office see our How to annotate an HTML PDF in Microsoft Office article. If you want to add text, images, forms fields, labels, or freehand images (with and without line and area drawing tools) to a PDF file you can use the built-in annotation features on your Microsoft Office software. You can also use the keyboard to annotate PDFs in Microsoft Office. If you use an old version of Microsoft Office (versions 5.x, 6.x, 7.x), there are several ways to create an image annotation on a PDF document in Microsoft Preview.