How to turn on the render visibility for all objects?

Question

How to turn on the render visibility for all objects? with 1 click

Creating 4-floor building, created 4 collection for 4 floor, In each collection 1 floor, each collection have walls and windows, to some, i have given names but for many i have not.

For render i have just disabled the object in render view and render, Now i want to enable it manually i have go through all the floors and enable it.

Like to H to Hide and Alt+H to Unhide objects are visible and invisible. Is there anyway to enable all the objects 1 click?

Answer 1

you can try running this script:

import bpy

for c in bpy.data.collections:
    c.hide_render = False
    
for o in bpy.data.objects:
    o.hide_render = False

it turns on render visibility for all collections and objects.

if you only want to do that for objects, just delete these 2 lines:

for c in bpy.data.collections:
        c.hide_render = False

Answer 2

Select all objects that you want to make visible in render, then in the Outliner window left-click on the camera symbol of one of these objects (no matter which) while holding the Alt key.

This also works if you have the objects selected and go to the Object Properties > Visibility and then Alt + left-click on Show In > Renders.

By the way, holding the Alt key while clicking an option or clicking on a field to enter a value (or entering a field value and confirming it with Alt+Return) is available in many areas to change the values of multiple selected objects.

//EDIT: Well, of course they have to be visible in the viewport as MikoCG correctly says in the comments, but since you know how to make them all visible in viewport I did not mention that.

Answer 3

Quite a few approaches.. maybe this one will fit..

In Object Mode, with ShiftM, you can link objects to a collection. This allows objects to be represented in multiple, possibly intersecting, collections.

If you Shift-click the 'Disable in Renders' icon next to a collection, the effect will reach into all the other collections in which its objects are represented.

Above,the cubes are in a 'Cubes' collection, All blue objects are in a 'Blue' collection, and so forth. By Shift-clicking 'Disable in Render' next to any set, that set will be hidden at render-time.

.. just to play with, if you like.

If you wanted disable all objects from rendering, then you can create a collection: 'All', to which all objects are linked.

If you want to use the View Layer mechanism, all collections representing the objects must be excluded from the layer for the objects to be excluded.