Sumatra PDF is a PDF, ePub, MOBI, CHM, XPS, DjVu, CBZ, CBR reader for Windows

How to add annotation into toolbar?

How to add annotation into toolbar?

The only hint of Annotations in the toolbar is a “reminder” that they may be unsaved. But you might not see that depending how your Windows Screens are set/scaled.

The Annotations are PDF “context” driven (they would not be available in ePub viewer) so only appear in PDF context menus