Grid · 9 Pro

Lay a layout grid over your screen.

Put a temporary grid over everything on your screen to check alignment — columns with gutters and margins, a baseline grid, a square grid or a dot grid.

Download on the Mac App Store

Free to download · Requires macOS 15 or later

Six columns, 24 pt gutters, 56 pt margins — and every card lines up with them.

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

  1. Choose the grid

    Press ⌃⌥M, then 9. The grid covers the whole desktop, with its controls at the top.

  2. Pick a mode

    Choose square, columns, baseline or dots — or press A to cycle through them.

  3. 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.

Measure what you see.

A precision instrument for your screen — one shortcut away.