Pinvas v1.0.0
Blender 5.0 or newer

Arrange the board

Right-click and open Arrange to work on the selected pictures. Notes and drawings count as pictures here.

The Arrange submenu listing Lay Out, Size, Align and Spacing commands
Arrange has four groups: Lay Out, Size, Align and Spacing.
GroupCommandWhat it does
Lay OutOptimal (Ctrl+P)Packs the pictures into one tight block shaped like the board, so they show as big as possible once the view fits them. With nothing selected it packs the whole board, and the view then shows it all.
Lay OutRow, Column, GridSide by side with the tops level, one under another with the left edges level, or in rows and columns.
SizeSame Height, Same Width, Same SizeGives each picture the selection's average height, width or area.
AlignLeft, Centre, Right, Top, Middle, BottomLines up their edges or middles.
SpacingSpace Evenly Across, Space Evenly DownEqual gaps between three or more pictures; the outer two stay.

Change the gap and the order#

After Optimal, Row, Column or Grid, Blender's Adjust Last Operation panel (bottom left of the 3D View) changes the gap and the order. The order is as placed (reading order), by name, or as added.

Frames#

Optimal with a frame selected packs the frame's contents inside it and fits the frame round them. See Notes, frames and drawing.

Fit the view#

Home or the Fit button on the board's bar shows every picture. Fit Selected, under View in the right-click menu, shows only the selection, and 1 (or a click on the zoom label at the board's bottom left) returns to 100%.