How to mark up a screenshot on Mac with boxes, arrows and blur
Grab with ⌃⌥S, click the grab, and draw: R for a box, A for an arrow, N for a note, B to blur. Press ↵ and the marks are drawn in, with the original kept.
You need: fab 0.2.14 on macOS 26 or later, Apple silicon
Updated:
Steps
Step 1
Grab it
⌃⌥S
Hold to pick an area, a window or a screen. It waits in the corner.
Step 2
Click the grab
The markup editor opens with the grab.
Step 3
Draw
R
R box, A arrow, N note, B blur, P pen, C circle, L line. 1 to 4 picks red, blue, teal or white. [ and ] change the thickness.
Step 4
Finish
↵
The marks are drawn into the grab and the original is kept beside it. Drag a copy into any app.
Tips
- Hold ⇧ while drawing an arrow or line to keep it straight.
- Select a note and press ↵ to change its words.
- Hold ⌥ while dragging a mark to copy it.
Questions
- Can I get the original back?
- Yes. fab keeps the unmarked grab next to the marked one.
- Can I mark up an older grab?
- Yes. Open History and use the pencil on any grab.