Prefab Manager - Prefabs for Roblox Studio [FREE]

[DevNixx (CEO)]

Edit once, update everywhere. No more manual copy pasting.

I built this plugin because I was tired of placing 100 trees across my map, then realizing they needed to be taller and having to manually update every single one. Now I just edit one instance and click “Update Prefab” boom, all 100 sync automatically.

This is my first plugin

Download

Get it FREE on the Creator Store:

https://create.roblox.com/store/asset/90202227765273/Prefab-Manager

How to install:

1. Click the link above
2. Click “Install” or “Get Plugin”
3. Restart Roblox Studio
4. Find “Prefab Manager” in your Plugins tab

Features

Live Prefab System

• Create prefabs from any selection of parts/models
• Edit any instance and update ALL copies instantly
• Instances stay linked even if you move/rename them
• Works exactly like Unity’s prefab system

Advanced Placement Mode

• Live ghost preview shows exactly where prefabs will place
• R - Rotate 45° increments
• G - Grid snap (cycles 1 → 4 → 0.5 studs)
• S - Surface snap (automatically places on top of surfaces)
• N - Normal alignment (matches surface angles for slopes/walls)
• Real-time preview updates as you adjust settings

Organization

• 7 built-in categories (Environment, Buildings, Props, Characters, UI, Effects, Other)
• Real-time search filter
• Click prefab names to rename them
• Click category badges to cycle through categories
• Horizontal scrolling category chips for quick filtering

Statistics

• View part counts, dimensions, and complexity
• Click the button for detailed breakdown:
  • MeshParts, basic parts, wedges
  • Scripts and attachments
  • Precise dimensions (X, Y, Z)

Modern UI

• Clean dark gradient theme
• Smooth animations and hover effects
• 3D spinning previews for each prefab
• Professional card-based layout
• Intuitive keyboard shortcuts

How to Use

Creating Prefabs:

1. Select parts/models in workspace
2. Click “ Create” in the plugin
3. Your selection becomes a prefab with the first instance in workspace

Updating Prefabs:

1. Edit any prefab instance (add parts, change colors, resize, etc.)
2. Select that instance
3. Click “ Update”
4. All other instances automatically sync to match!

Placing Prefabs:

1. Click “ Place” on any prefab
2. Ghost preview appears - move mouse to position
3. Use R/G/S/N keys to adjust rotation/snapping
4. Click to place, keep clicking for more
5. Press ESC to exit placement mode

Organizing:

• Click prefab name to rename
• Click category badge to change category
• Use search bar to filter by name
• Click category chips to filter by type

Use Cases

Perfect for:

• Level designers building repetitive structures (trees, rocks, buildings)
• Creating consistent game assets across large maps
• Team collaboration (everyone uses the same prefab definitions)
• Rapid iteration (change design once, see it everywhere)
• Any scenario where you’d normally copy-paste objects

Example workflow:

1. Place 50 streetlamps across your city
2. Realize they need to be taller and have a different light color
3. Edit ONE lamp
4. Click “Update Prefab”
5. All 50 instantly update
6. No hunting through workspace, no manual updates!

Screenshots

• Main UI with prefab list
• Placement mode with ghost preview
• Category filtering

Feedback

This is my first plugin release, so I’d love to hear:

• What features are most useful?
• What could be improved?
• Any bugs or issues?
• Feature requests?

Thanks for checking it out! Hope it saves you as much time as it’s saved me.

Credits & Thanks

Built with:

• Roblox Plugin API
• CollectionService for tagging
• TweenService for smooth animations
• Love and too much coffee

[baj_dev (baj)]

Is this.. literally just packages?

[Tomi1231 (Chilly28)]

I am (mildly) appalled at the criticism here. Open source contribution is done for free, if you don’t like it, don’t deal with it. But more so, the criticism seem to miss features you’re presenting. It’s not just a package system, is a placement tool? It’s not just models either?

I haven’t tested your plugin, and I probably never will, because I don’t personally really have a use for it (I do mostly scripting), but from skimming the post, it seems quite interesting

Keep up the good work , and don’t let yourself get dragged down

[Fe_ct]

and why do you care? nobodys forcing you to use this

[Riesegarder]

Seems like a cool plugin, sounds like it’s more convenient than the roblox packages workflow
Gotta ask though, does this work across places? And how does it track prefabs?

[DevNixx (CEO)]

Prefabs currently do not function across different places. I am already working on making it so they work across other places. When you create a prefab, it is stored in ServerStorage > PrefabDefinitions. Each instance is tagged with PrefabInstance_[PrefabName] using CollectionService to track all instances with that tag. Even if you rename or move instances in the workspace, the tags remain attached. When updating a prefab, the plugin locates all tagged instances and replaces them accordingly.

[LostShedGames]

Feedback:

I initially tested with a single part, then a part in a model.

When I click create I get a model containing the part created in ServerStorage - PrefabDefinitions and an instance of the model in the same location as the original part (which remains in Workspace). It feels like it needs a config option to handle this (Delete original object once a prefab has been created?)

It feels like it needs a keyboard short cut to stop placing (esc?)

When I use place, an instance is created in workspace, and I can place on the nearest y surface with one click (very nice!), but when I click place again to turn this off the final, unplaced instance is left in workspace. There needs to be a check so that an unplaced instance is removed when placing is turned off (this is quite annoying).

When creating a prefab of a model, the model becomes contained within the prefab model. This needs some config options, e.g. if there is a single top level model then use that model name with (prefab) appended. This may have complexities with pivot point adjustments.

Delete button needs a confirmation box (especially given it is right next to Place!)

The instance count does not update if instances are manually deleted from workspace (or duplicated, see later).

I can imagine it might be useful to be able to scroll through instances of a prefab (I’m thinking left and right arrow keys in the prefab box that select and focus on the next/previous instance).

It might be useful to have a separate button to delete all instances, but leave the master prefab in server storage, then I can create a template place that has everything ready to build with - perhaps I could even copy/paste PrefabDefinitions from another place and they are automatically detected by Prefab Manager and added to my prefab list?

Is there a way to remove an instance from the prefab link? Suppose I place and scale 3 trees, but I want to make one of them a darker green - how do I prevent this tree getting updated back to light green in the future?

If I duplicate a prefab instance in workspace, it is not tracked or updated as a prefab (counter-intuitive to user).

I love the concept and can definitely imagine using it in the future.

[gravitycoil828 (Gravity)]

did you even read the post…
it doesn’t come bundled with models, the trees were an example

[DevNixx (CEO)]

Sorry about the late response college is kind of getting in the way now. But I have definitely started implementing some stuff into the new version which will be out this 2025-10-24T06:00:00Z

[DevPig]

packages dont work very well with scripts, EDIT: I realized that modulescripts can be done with packages.

[gravitycoil828 (Gravity)]

does this carry over between places, or is it place-only
if so, it’d be pretty convienient

[DevNixx (CEO)]

In the next version which will be out 2025-10-24T06:00:00Z you will be able to use it across places

[Spa_rkk]

I don’t want to be “that guy” but…
Why does this consist of one 2481 line script?

the script also seems to contain signs of AI-Generated code, such as some comments saying “Action buttons with enhanced animations” almost as if you asked an AI to make the animations better.

This code paired with the fact the UI is created in the script, without using a framework, makes me suspect this is just AI slop.

[DevNixx (CEO)]

The UI portion was generated with AI, mainly for testing. Everything else was coded by me, and the AI comments were just for quick organization and to be able to navigate the script easier. This current version was more for testing to see how people would like the plugin. I’m currently working on a custom framework that’s fully coded by me and will replace the AI code in v3.0 or later. The 2,481 lines of code will also be shortened drastically as everything gets restructured and optimized.

[Spa_rkk]

I would suggest using modules to separate your code and make it more readable.