How do I install Carbonfast?

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 Carbonfast work with?

The listing gives Minecraft 1.21.4. This is the version stated by the author or source site, not something we verified ourselves.

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Carbonfast

by kvxd · on Modrinth

Client-side mod that makes startup feel faster by deferring expensive resource loading until after the main menu is available.

⬇ Download on Modrinth

Open in MC Java Mods Get it on Google Play →

Carbon

Carbon is a small client-side Minecraft mod that makes startup feel faster by deferring expensive resource loading until after the main menu is available.

It targets Fabric and NeoForge, with releases built per Minecraft version branch.

Vanilla vs Carbon

Supported Versions

0.1.0-26.1.2: current branch and main README
0.1.0-1.21.11: older Minecraft branch
0.1.0-1.21.4: older Minecraft branch

Notes

Carbon is client-only. Install the jar for your loader and Minecraft version.

Quick facts

Edition: Minecraft Java
File type: .jar
Minecraft version listed: 1.21.4
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.

Verified by MCModsHub

Ships as Carbon-0.1.0-1.21.4-fabric.jar — drop this file into the mods folder
Download size: 57 KB
Download link checked 5 Sept 2026 — working

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

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