Changing safe-zone margins and grid spacing

You can change the percentage of window area marked as title-safe or action-safe, and you can change the number of grid cells. Safe-zone margins represent the percentage of image area not included in the safe area. You can set spacing options for standard grids or proportional grids. The size of proportional grids increases or decreases when the composition size changes; the size of standard grid squares remains the same regardless of composition size.

To change safe-zone margins:

1. Choose Edit > Preferences > Grids & Guides (Windows) or After Effects > Preferences > Grids & Guides (Mac OS).
2. Type values for Action-Safe and Title-Safe margins, and click OK.

To change grid spacing:

1. Choose Edit > Preferences > Grids & Guides (Windows) or After Effects > Preferences > Grids & Guides (Mac OS).
2. Type a value for Gridline Every, type a value for Subdivisions, and click OK.

To change proportional grid spacing:

1. Choose Edit > Preferences > Grids & Guides (Windows) or After Effects > Preferences > Grids & Guides (Mac OS).
2. Type Horizontal and Vertical values for Proportional Grid, and click OK.