This add-on can quickly add keyframes to show/hide objects in collections.

There are often situations in Blender where you like to hide or show all objects of a collection. Sometimes you may even want to keyframe that, e.g. you have a rigged car and animate it by follow path and then it should fall off a cliff, you would have the rigged car in one collection and a rigid body copy of the mesh in another collection. With this add-on, you would only have to go to the keyframe, select your collection and press the shortcut S. Then all objects of your selected collection will be keyframed (hide_render = True).

Of course, you could do this also manually. But that's the advantage of my add-on: it's a time safer!

In the preferences of the add-on, you can define youor preferred keys:

In your 3D viewport, you can choose which keyframes should be set:

- just render keyframes (hide_render)

- just viewport keyframes (hide_viewport)

- both

- if objects in subdirectories should also be keyframed or not