All diagrams should be easy for everyone to read. Astah provides several features to make your diagram presentations clean to increase its readability.
Align objects horizontally
You can align objects so they line up along a horizontal axis.
- Select multiple objects.
- Go to [Alignment] – [Horizontal] and choose the aligning method you’d like.

Or you can choose the icon from the toolbar.

Align objects vertically
You can align objects so they line up along a vertical axis.
- Select multiple objects.
- Go to [Alignment] – [Vertical] and choose the aligning method you’d like.

Or you can choose the icon from the toolbar.

Align object sizes
You can change the size of multiple objects.
- Select multiple objects.
- Go to [Alignment] – [Adjust Size].
- Choosing [Width] changes all the object width to the same width as the widest one, and
Choosing [Hight] changes all the objects to the same height as the highest one.

Choosing [Specified Size] can let you directly enter width and height, or let all to be in the same size as the object you choose.

Auto Layout
This menu arranges the model elements aligned hierarchically.
- Open a diagram.
- Go to [Alignment] – [Auto Layout] – [Vertical] or [Horizontal].

- Objects will be alined accordingly.

NOTES:
- Automatic Layout does not work for Mind Maps.
- Automatic Layout is available for Sequence diagrams in version 8.5 and later. However it does not work for CombinedFragments and the common elements such as free texts and shapes.