What the grid is
When you open the resize grid, MaxTo draws a grid of cells shaped like your display — wide on an ultrawide, tall on a portrait screen. Every snap rectangle is some sub-rectangle of that grid: a single cell, or several adjacent cells.
The grid maps onto the part of the screen windows can use: everything except the menu bar and the Dock. A window snapped to the bottom row stops at the Dock instead of sliding under it.
The default is four rows by seven columns — coarse enough to land on halves and quarters cleanly, fine enough that thirds and other useful fractions still align.
The grid is a vocabulary, not a constraint: it gives every useful position a name your fingers can find again.
Per-display configuration
The grid is per display: each display gets its own rows × columns and you can tune them independently, from the grid’s own Grid options or under Settings → Displays. See Make the grid match your display for the click path.
Selecting more than one cell
Inside the resize grid, drag from one cell to another and MaxTo selects every cell in between as a rectangle. A highlight on the screen shows where the window will land as you drag, and the card below the grid shows the size in pixels, so you know exactly what you’ll get before you let go.
Why saved positions survive grid changes
A preset — and a remembered position — is stored as a fraction of the screen, not as cell coordinates. A region that covers the right half at 4 × 7 still covers the right half at 5 × 9 or 3 × 10. The grid is how you draw a region; the fraction is what MaxTo keeps. Change the grid as often as you like — everything you saved follows.
Fit to grid
Fit Window to Grid works the other way round: it takes a window as it is and moves each of its edges to the nearest grid line on its display. Use it as a one-shot tidy-up for a window you’ve resized by hand.
Limits on grid size
The maximum rows and columns are bounded by two things:
- The display’s aspect ratio. MaxTo won’t go finer than the screen’s own proportions: a 16:9 display tops out at 16 columns by 9 rows.
- A minimum cell size. Cells need to be large enough to click on; that imposes a hard cap on each axis, which smaller screens reach first.
If a value won’t go any higher, you’ve hit one of those limits.