A downloadable unreal engine plugin for Windows

Buy Now$25.00 USD or more

Prefab Tool brings nested prefab support to Unreal Engine.

Prefab Tool Youtube Playlist

It allows you to convert preconfigured actors in the level to prefab asset in the content browser, and then add the prefab to the same or other levels as many time as you like. 

Prefab can be edited in the level editor directly, all changes to the prefab can then be propagated to all existing prefab instances.

You can disconnect a prefab instance to prevent it being automatically updated by prefab changes. Or you can choose to revert any changes to the prefab instance.

Prefab can be nested to support complex scene hierarchy. Changes to nested prefab can be reverted or propagated like normal prefabs.

Prefab is an editor tool to help level building, it can't be spawned in runtime. Once prefab instances been placed in the level, you can choose to convert them back to normal actors.

List of Features:

  • Create Prefab from collection of actors in the level
  • Nested Prefab to support complex scene hierarchy
  • Preview Prefab Thumbnail in Content Browser and Detail View
  • Drag and drop Prefab into the level to instantiate  actors collection
  • Edit Prefab directly inside level editor
  • Apply changes of Prefab to all Prefab instances
  • Revert changes of Prefab instances
  • Convert Prefab instances to normal actors
  • Destroy Prefab Actor with option to destroy whole hierarchy
  • Swap Prefab Asset anytime

Technical Details:

  • Full c++ source code included, works with both Launcher and Github builds
  • Works with both c++ and blueprint only projects
  • Prefab Edtior Module is precompiled for Win64; Prefab Runtime Module is precompiled for Win32/Win64/Android

Known Limitation and Issues:

  • Prefab is base on actor hierarchy, actor types which can't be attached to other actor are not supported. (BSP Brush/Group Actor/Landscape)


  • DRM-Free, 
  • Full source code included
  • Requires one license per seat (You can choose Indie Team or Studio License if  needed)
  • Indie Team License allows maximum 10 developers providing  the Licensee with annual gross revenues (based on fiscal year) below US$100,000.
  • Studio License allows any number of developers employed by the Licensee to use the software.

Change Log:


  • [Performance] Now resolving Archetype from cache first (Thanks Dan Brakeley for code contribution)
  • [Performance] Delay spawned Prefab actor instances' references replacement
  • [Performance] Disable warning if destination level is hidden when spawning prefab instances
  • Apply Prefab changes on large map should expect ~10x speed improvement
  • Fix bug Prefab actorss not been refreshed when level is added to the world via UWorld::AddToWorld (Thanks Dan Brakeley for code contribution)
  • Fix bug duplicating Prefab asset not generating new prefab id
  • Refator PrefabGEditorAdapter out of PrefabToolHelpers


  • Fix a bug that "Change Prefab to" and "Replace Selected Actors with Prefab" options not checking whether parent actors have same prefab asset assigned (Thanks code contribution from James Dzierwa @ Certain Affinity)
  • Fix a bug that prefab's pivot property should not be used when attaching spawned prefab instances
  • Add 4.20 support


  • Add Set Prefab Pivot to Current Widget Location 
  • Add option to always set Components of Generated Blueprint to Movable
  • Fix bug when Replace Actors With Created Prefab option is on and the last selected actor is not on the topmost hierarchy will cause created prefab attach to deleted actor


  • Add option to enable apply changes from disconnected Prefab Actor
  • Add option to harvest components first instead of always create child actor when generating blueprint (Thanks code contribution from Elliot Yun @ RyseUp Studios)
  • Generated blueprint reference is now saved with Prefab Asset
  • Generate blueprint can now ignore actors of specific class or has specific actor tags
  • Now Support Generate Blueprint option default is on
  • Now Replace Actors with Created Prefab option default is on
  • Cleanup all LogTemp output


  • Fix Prefab's asset references not properly parsed in 4.18
  • Fix Migrate prefab to other project not working in 4.18
  • Now call PostEditMove on all children actors after parent Prefab Actor moved


  • Add Lock Selection feature, now spawned prefab actor will be locked/grouped by default
  • Add context menu and hotkey to toggle lock selection
  • Enable Prefab Component Visualizer by default; Now draw darker wireframe box to indicated lock status
  • Add Select children actors to context menu
  • Stamp prefab will now disconnecting all chidren prefab actor
  • Add Undo support for hide/lock prefab actor through context menu
  • Add 4.18 support; Drop 4.15 support


  • Add Stamp Prefab option to level editor context menu to spawn disconnected prefab actor
  • Add Replace Selected Actors with Prefab to context menu as a replacement of built-in "Replace Selected Actors with" function
  • Add Change Prefab option to context menu
  • Add "Replace Actors With Created Prefab" option in Prefab editor setting
  • Add Prefab Component Visualizer
  • Now generated blueprint will inherit mobility setting from prefab
  • Add workaround to persist painted vertex color of blueprint instances inside prefab
  • Fix ensure issue in generated blueprint
  • Fix bug when creating a new prefab out of a prefab and immediately placing it will cause the contents of the original prefab in the scene to disappear
  • Fix bug circular nested prefab might be created when applying prefab change
  • Fix bug attempting to create nested prefab when nested prefab support is off
  • Change Prefab editor module's LoadingPhase to PostEngineInit
  • Minor code refactoring


  • Add option to check if prefab content changed before updating all preab actors when opening map


  • Add experimental Blueprint generation support
  • Support non-unity build

  • Fix potential editor crash due to name clash when reverting prefab Actor in multi-levels map (thanks ColdIronPoz for the report and fix)
  • Fix apply prefab actor only works if world's current level is the same as prefab actor in multi-levels map
  • Drop 4.14 support


  • Add Visibility Widget to show/hide Prefab Actor with it's children actors in one click
  • Add Select Parent Prefab Actor context menu  
  • Add Collapse and Select Parent Prefab Actor context menu  
  • Add default hotkey binding for Select/Collapse/Show/Hide Prefab Actor  
  • Fix Weak Object Reference in Prefab wrongly pointing to original source actor 
  • Select Prefab Actors from Prefab Asset context menu now select actors even it's hidden


  • Add Prefab in Create Basic Asset category
  • Fixed bug blueprint archetype stored in prefab asset references table, preventing redirectors been fixup
  • Fixed bug prefab thumbnail preview scene holding up preview actor references unnecessary


  • Fixed bug that thumbnail origin offseted
  • Improved prefab asset references parsing
  • Added log output of un-supported actors


Initial Release

Published Jun 04, 2017
StatusIn development
Made withUnreal Engine
Tagsplugin, sourcecode, Unreal Engine


Buy Now$25.00 USD or more

In order to download this unreal engine plugin you must purchase it at or above the minimum price of $25 USD. You will get access to the following files:

PrefabTool_1.0.4_for_4.15.3.zip 22 MB
PrefabTool_1.0.4_for_4.16.3.zip 26 MB
PrefabTool_1.0.4_for_4.17.0.zip 27 MB
PrefabTool_1.0.5_for_4.15.3.zip 22 MB
PrefabTool_1.0.5_for_4.16.3.zip 26 MB
PrefabTool_1.0.5_for_4.17.1.zip 27 MB
PrefabTool_1.0.6_for_4.15.3.zip 22 MB
PrefabTool_1.0.6_for_4.16.3.zip 26 MB
PrefabTool_1.0.6_for_4.17.2.zip 28 MB
PrefabTool_1.0.7_for_4.16.3.zip 26 MB
PrefabTool_1.0.7_for_4.17.2.zip 28 MB
PrefabTool_1.0.7_for_4.18.0.zip 28 MB
PrefabTool_1.0.8_for_4.16.3.zip 26 MB
PrefabTool_1.0.8_for_4.17.2.zip 28 MB
PrefabTool_1.0.8_for_4.18.2.zip 28 MB
PrefabTool_1.0.9-build2_for_4.16.3.zip 26 MB
PrefabTool_1.0.9-build2_for_4.17.2.zip 28 MB
PrefabTool_1.0.9-build2_for_4.18.3.zip 28 MB
PrefabTool_1.1.0_for_4.16.3.zip 26 MB
PrefabTool_1.1.0_for_4.17.2.zip 28 MB
PrefabTool_1.1.0_for_4.18.3.zip 28 MB
PrefabTool_1.1.0_for_4.19.0.zip 30 MB
PrefabTool_1.1.1_for_4.18.3.zip 28 MB
PrefabTool_1.1.1_for_4.19.2.zip 30 MB
PrefabTool_1.1.1_for_4.20.0.zip 30 MB
PrefabTool_1.1.2_for_4.18.3.zip 22 MB
PrefabTool_1.1.2_for_4.19.2.zip 23 MB
PrefabTool_1.1.2_for_4.20.0.zip 21 MB
Indie Team License 8 kB
if you pay $100 USD or more
Studio License 8 kB
if you pay $250 USD or more