This exposes the hidden structure.
This is the focused version of “Safe-zone preview”: do the one job, inspect the result, and move on without opening a full editor.
Social & Ads
Check what social apps might cover.
Choose a creative and preview a conservative safe area for important text and faces.
1 Choose2 Adjust3 Preview
Useful to know
Four things worth knowing.
Neat maths can still look wrong.
It solves the named job, not every problem around it.
Check it where people see it.
Preview it at phone size and keep important text, faces and logos away from platform UI and edges.
Optical judgement still matters.
Keep the original until the finished result has worked in the place you made it for.