With Nebulb 2 is possible to change the size of the side tool panels. To do this, simply place the mouse on the darker separation strip between the tool panel and the display, press the left mouse button and scroll sideways:

In this way you can modify the width of the side panels so that the Nebulb interface fits better to the resolution of your screen.

In addition to the above, it is also possible to hide/show these tool panels by means of the arrow button on the side edges.