Screenshot Annotation on Mac
Mark up screenshots on Mac with arrows, text, pen, highlighter, pixelate, magnify, and step tools in the TrarrenShot editor.
Last updated: May 2026
Screenshot Annotation
TrarrenShot annotation tools let Mac users mark up screenshots after One Shot with rectangle, circle, line, arrow, text, pen, highlighter, pixelate, magnify, and step tools before exporting. It is built for fast screenshot markup when a written explanation would take too long.
How It Works
Start One Shot
Start One Shot from the menu bar, or use the default shortcut if you have not changed it.
Select the area
Drag to select a region, or press F for a fullscreen capture.
Add annotations
Choose rectangle, circle, line, arrow, text, pen, highlighter, pixelate, magnify, or step from the editor toolbar.
Available tools: rectangle, circle, line, arrow, text, pen, highlighter, pixelate, magnify, and step.
Privacy
Recognition, stitching, annotation, and export preparation run locally on your Mac.