
Modrinth · Minecraft mod
Blocks Previewer
Client-side mod to preview how blocks will be orientated when placed!
Quick answer
Which Blocks Previewer release should I use?
Blocks Previewer 2.2.0+1.21.1-fabric targets 1.21.1 with Fabric. It must be installed on the client. Do not install it on the dedicated server. All 2 required mods have matching files.
Where it goes
Is Blocks Previewer required on the client, server, or both?
It must be installed on the client. Do not install it on the dedicated server.
This file is marked client-only.
What else does Blocks Previewer 2.2.0+1.21.1-fabric need?
2.2.0+1.21.1-fabric. Change the file and its required mods may change too.
Install Craft Config Lib, Fabric API first. We found matching files for this game-version and loader setup.
We only count dependency files that match this setup. A file for another loader does not fill the gap.
Before you install it
Add Blocks Previewer without breaking your instance.
Built for Blocks Previewer 2.2.0+1.21.1-fabric. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use 2.2.0+1.21.1-fabric. It targets 1.21.1 with Fabric; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
Install Craft Config Lib, Fabric API first. We found matching files for this game-version and loader setup.
- 03
Put it on the correct side
It must be installed on the client. Do not install it on the dedicated server.
- 04
Pick the file you checked
Use the “Get this file” button beside 2.2.0+1.21.1-fabric. It opens that exact file at the source.
About this project
What does Blocks Previewer add?
Blocks Previewer
Preview blocks before placing!

Ever placed a stair or piston the wrong way and had to break it again? Blocks Previewer lets you see how a block will be oriented before it’s placed, saving your time and frustration, especially useful for builders and redstoners.
This is a purely client-sided mod, and does not interact the server. Works similarly to Create’s placement preview, but for any block in Minecraft.
To open config for the mod, use the command /blockspreviewer or by using Mod Menu for Fabric or the built in (neo)Forge config menu.
Features
Controls
- Press G to toggle preview
- Hold H for a momentary preview
(Both keys are fully configurable in the controls menu.)
Block filtering
- Use J to switch between previewing:
- All blocks
- Only directional blocks (stairs, pistons, observers, etc.)
- Use J to switch between previewing:
Showcase
TRANSPARENT mode

OUTLINE mode

CONFIGS

Dependencies (For versions >= 2.1.0)
Fabric Dependencies
Mod Menu is optional. All else is required.
| Modrinth | Curseforge |
|---|---|
| Craft Config Lib | Craft Config Lib |
| Fabric API | Fabric API |
| Mod Menu | Mod Menu |
Project description from Modrinth.
Pick your setup
Blocks Previewer by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
26.3
1 loader build26.2
1 loader build26.1.2
2 loader builds26.1.1
2 loader builds26.1
2 loader builds1.21.11
2 loader builds1.21.10
1 loader build1.21.8
1 loader build1.21.7
1 loader build1.21.6
1 loader build1.21.5
1 loader build1.21.4
2 loader buildsShowing the newest 12 of 22 game versions. Older files are in the list below.
Check the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
Blocks Previewer versions and loaders
2.2.0+1.21.1-fabric
blocks_previewer-2.2.0+1.21.1-fabric.jar
6 Nov 2026
2.2.0+1.21.1-neoforge
blocks_previewer-2.2.0+1.21.1-neoforge.jar
6 Nov 2026
2.2.0+26.2-fabric
blocks_previewer-2.2.0+26.2-fabric.jar
6 Nov 2026
2.2.0+26.3-fabric
blocks_previewer-2.2.0+26.3-fabric.jar
6 Nov 2026
2.2.0+26.2-fabric
blocks_previewer-2.2.0+26.2-fabric.jar
6 Nov 2026
2.2.0+1.21.1-neoforge
blocks_previewer-2.2.0+1.21.1-neoforge.jar
6 Nov 2026
2.2.0+26.3-fabric
blocks_previewer-2.2.0+26.3-fabric.jar
6 Nov 2026
2.1.1+1.21.11-neoforge
blocks_previewer-2.1.1+1.21.11-neoforge.jar
31 May 2026
2.1.1+1.21.1-fabric
blocks_previewer-2.1.1+1.21.1-fabric.jar
31 May 2026
2.1.1+26.1-neoforge
blocks_previewer-2.1.1+26.1-neoforge.jar
31 May 2026
2.1.1+1.21.1-neoforge
blocks_previewer-2.1.1+1.21.1-neoforge.jar
31 May 2026
2.1.1+1.21.11-fabric
blocks_previewer-2.1.1+1.21.11-fabric.jar
29 May 2026
Looking for an older file? The official Modrinth project page is in Resources.