You can add various types of annotations to your PDFs (highlights, notes, ink drawings, images, ...):
- Open the document you would like to annotate.
- Tap the annotation edit button in the main toolbar. This shows the annotation toolbar.
- Select one of the available annotation tools in the annotation toolbar.
- Tap or draw on the document.
Some related tools are put in groups depending on how much screen space is available. To change tools within a group, long press on a tool icon in the annotation toolbar:
Annotations are automatically saved back to the document when closing it.