Window

Window settings control the title bar, padding around the terminal grid, and background transparency.

Window decorations

[window]
decorations = true

Option	Type	Default	Description
decorations	boolean	true	Show the window title bar

On macOS, hiding decorations removes the title bar but preserves resize handles. On Linux, it removes all window decorations (title bar and borders) — resizing from edges depends on the compositor or window manager. On Windows, it removes the title bar and borders.

Padding

Padding adds space between the window edge and the terminal grid, in logical pixels.

[window]
padding = 8

Option	Type	Default	Description
padding	integer	0	Padding on all sides
padding_x	integer	0	Left + right padding
padding_y	integer	0	Top + bottom padding
padding_left	integer	0	Left padding
padding_right	integer	0	Right padding
padding_top	integer	0	Top padding
padding_bottom	integer	0	Bottom padding

Padding follows CSS-like specificity — more specific keys override less specific ones. For example, padding_left overrides padding_x, which overrides padding.

[window]
padding = 4            # all sides: 4px
padding_x = 8          # left + right: 8px (overrides padding for horizontal)
padding_top = 12       # top: 12px (overrides padding for top)

Background

[background]
opacity = 1.0
blur = 30

Option	Type	Default	Description
opacity	float	1.0	Background opacity, 0.0 (transparent) to 1.0 (opaque)
blur	integer	30	Blur radius when opacity is less than 1.0

Setting opacity below 1.0 enables composited transparency. The blur setting activates the system compositor’s blur effect behind the window:

• macOS: Uses NSVisualEffectView for native blur.
• Windows: Uses acrylic transparency with DPI-aware rendering.
• Linux: Blur depends on the compositor (e.g. KDE Plasma supports it).

[background]
opacity = 0.85
blur = 20

CLI flags

Flag	Description
--decorations / --no-decorations	Show/hide window title bar
--padding <int>	Window padding on all sides
--padding-x <int>	Left + right padding
--padding-y <int>	Top + bottom padding
--padding-left <int>	Left padding
--padding-right <int>	Right padding
--padding-top <int>	Top padding
--padding-bottom <int>	Bottom padding
--background-opacity <float>	Background opacity
--background-blur <int>	Blur radius

Runtime changes

Background opacity and blur require a restart — they are not hot-reloadable.