How do I install Worldgen profiling?

Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. Download the .jar. Put it in the .minecraft/mods folder and launch that loader profile. Opens on Modrinth — not every file is mirrored on our own servers.

What Minecraft version does Worldgen profiling work with?

The listing gives Minecraft 1.19.3, 1.19.4, 1.20, among others. This is the version stated by the author or source site, not something we verified ourselves.

Home›Java›Mods›Worldgen profiling

ModsJava

Worldgen profiling

Java mod listed for Minecraft 1.19–1.20. Downloads from the MC Java Mods app on Android.

by Misode · on Modrinth

Which Minecraft do you have?

Every version of the game needs its own build. Pick yours, then download — the wrong build installs fine and then does nothing in the game. This mod is built for Fabric only.

Minecraft 1.19.3–1.20.4Newest
Minecraft 1.19–1.19.2
Minecraft 1.18.2
Minecraft 1.18–1.18.1

⬇ Download for 1.19.3–1.20.4 ⬇ Download for 1.19–1.19.2 ⬇ Download for 1.18.2 ⬇ Download for 1.18–1.18.1

I don't know my version or loader

Open the Minecraft launcher and look at the profile you play on — it names both, like fabric-loader-1.21.4. The version also shows in the bottom-right corner of the game's main menu.

No loader in the profile name? Then it's plain Minecraft, and these mods won't run — you need Fabric or NeoForge installed first.

Open in MC Java Mods Get it on Google Play →

Creating a JFR report

Launch Minecraft with Fabric.
Download the latest release and add it in the mods folder.
Start by running the /jfr start command and generate new terrain.
Run /jfr stop. This will create a file at .minecraft/debug/client-*.jfr.

Analyzing the JFR report

Download and install the JDK Mission Control tool.
In Mission Control, navigate to File > Open File... and select the JFR report.
Select the Even Browser Page in the Outline.
Find the Minecraft > World Generation > Feature Placement event type, and select it.
Create a new page with just this event type.
Because the JFR file has an event for each feature placement per chunk, it is useful to group events.
In this view, you can show average and total durations. It is now really easy to see which features are the bottlenecks.

Quick facts

Edition: Minecraft Java
File type: .jar
Minecraft versions listed: 1.19.3, 1.19.4, 1.20
How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.

Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.

File checked by MCModsHub

Ships as worldgen-profiling-1.3.1.jar — drop this file into the mods folder
Download size: 11 KB
Download link checked 11 Oct 2026 — working

These come from our own check of the pack file, not from the source page.

Explore more

All Mods for Java All Minecraft Java mods Java mods for 1.19 Java mods for 1.20