Balsamiq Edit: This has been fixed in version 3.3.9
I googled how to centre and the documentation says it does it by default but it doesn’t in the slightest, with or without zoom out set up.
Right now, the centering function is based on the largest element in the project. We did this to prevent mockups from moving while in presentation mode.
I’m going to add your suggestion to our feature tracker so we can talk about adding it as an option.
Great news! We just released our latest official version (3.3.9) including our new Full Screen Project Centering Rules, as show below:
Thanks again for sharing your need about this!
You can get the new version (3.3.9) here:
And the complete release notes are here: