What it checks
- Column grids with your count, gutter and margin
- Baseline grids for type
- Square grids, like an 8-point grid
- Dot grids for spacing
- Alignment of a whole layout at a glance
How to overlay a grid on your screen
Choose the grid
Press ⌃⌥M, then 9. The grid covers the whole desktop, with its controls at the top.
Pick a mode
Choose square, columns, baseline or dots — or press A to cycle through them.
Set the pitch
Use − and + (or scroll) to change the cell size or column count, and ⌘-drag to move the grid’s origin. Your setup is remembered; R resets it.
Keyboard shortcuts
- 9
- Choose the grid
- A
- Next mode
- +−
- Change the pitch or column count
- ⌘drag
- Move the grid’s origin
- R
- Reset the grid
Free or Pro?
The Grid is part of Measure My Pro, a one-time purchase. Before you buy, it opens once for a full session, so you can try it on your own work.
Enhanced Precision — edge snapping, gap detection and a real-pixel loupe — is free and optional. It needs Screen Recording permission; everything else works without it.
Questions and answers
How do I put a grid over my Mac screen?
Choose Measure My’s grid. It lays a temporary grid over the whole desktop — columns, baseline, square or dots — that you can size and move, then put away with Esc.
Can I check a 12-column layout?
Yes. In columns mode, set the column count, gutter and margin — for example 12 columns with a 24-point gutter — and see whether the design lines up.