Smooth Preview

Smooth preview is an addon intended to emulate the “3” in maya. It toggles the the subdivision surface of multiple objects. Works on multiple selected objects

It adds Smooth On / Off and Modifier On / Off there is a Drop Down you can use to Set the Subdivision Level and a Button to Apply the Subdivision / Modifiers

The Addon Also expose the Wireframe Overlay for more easier toggle

Wireframe Overlay

Just easy access to wireframe overlay toogle.

Smooth

Turn on the Viewport Display and Render Display of the Subdivision Surface modifier of the selected object.

Also apply shade smooth to the selected objects.

If subdivision surface modifier is not found in object, it will create one instead.

Normal

Turn off the Viewport Display and Render Display of the Subdivision Surface modifier of the selected object

Also apply shade flat to the selected objects.

If subdivision surface modifier is not found in object, it will create one instead.