mod
CustomMcMinecraft mod for 1.21.11
CustomMc is a lightweight client mod that lets you personalize Minecraft’s UI, including the window title, loading text, title screen buttons/background, and an in-game watermark, all from an in-game config screen.
- Latest version
- 1.0.2
- Minecraft
- 1.21 to 1.21.11
- Java
- Java 21+
- Loader
- Fabric
- Licence
- LicenseRef-All-Rights-Reserved
- Downloads
- 404
- Updated
- 4 mo ago
- Available on
- Modrinth
PartnerHost CustomMc servers
One click and CustomMc is installed with the right loader, on hardware built for it.
- 1.21.11
- Fabric
- One click mod install
- Loader matched for you
- Ryzen CPUs
- NVMe SSD
Screenshots
Click a screenshot to open it. Screenshots are served from the author’s own host and belong to them.
Minecraft versions
Every version CustomMc declares support for, newest first, with the Java runtime that version needs.
| Minecraft | Through | Java | Evidence | Released |
|---|---|---|---|---|
| 1.21.11 | Fabric | 21+ | declared | 9 Dec 2025 |
| 1.21.10 | Fabric | 21+ | declared | 7 Oct 2025 |
| 1.21.9 | Fabric | 21+ | declared | 30 Sept 2025 |
| 1.21.8 | Fabric | 21+ | declared | 17 Jul 2025 |
| 1.21.7 | Fabric | 21+ | declared | 30 Jun 2025 |
| 1.21.6 | Fabric | 21+ | declared | 17 Jun 2025 |
| 1.21.5 | Fabric | 21+ | declared | 25 Mar 2025 |
| 1.21.4 | Fabric | 21+ | declared | 3 Dec 2024 |
| 1.21.3 | Fabric | 21+ | declared | 23 Oct 2024 |
| 1.21.2 | Fabric | 21+ | declared | 22 Oct 2024 |
| 1.21.1 | Fabric | 21+ | declared | 8 Aug 2024 |
| 1.21 | Fabric | 21+ | declared | 13 Jun 2024 |
Download
From CustomMc’s own host. Nothing is re-hosted here.
CustomMc.jar · 0.3 MB · for 1.21, 1.21.1, 1.21.2, 1.21.3
9aa9b465038a…Frequently asked
Does CustomMc work on Minecraft 1.21.11?
Yes. 1.21.11 is the newest Minecraft version CustomMc declares support for, and the claim comes from the author's own release metadata rather than from a compatibility list somebody maintains by hand.
Which Minecraft versions does CustomMc support?
Everything the author has declared, from 1.21 up to 1.21.11. The full list is in the table above, with the Java runtime each version needs next to it.
Do I need to install CustomMc on the client or the server?
The client only. There is nothing to install on the server, so it works on any server you can already join.
Which loader does CustomMc need?
Fabric. A build for one loader will not load on another, so this is the first thing to check before the Minecraft version.
Which Java version do I need for CustomMc?
Java 21 or newer, because that is what the newest Minecraft release it supports requires. The requirement comes from the game rather than from the mod itself.
What licence is CustomMc under?
LicenseRef-All-Rights-Reserved, as stated by the author on the platform we synced it from. Check the project's own page before redistributing or bundling it.
How do I install CustomMc?
Install the matching loader first, then put the downloaded file in your mods folder and start the game. The loader, the mod and Minecraft all have to be on the same version, which is the usual reason a mod does not appear in game.
Where do I download CustomMc safely?
From the author's own page on Modrinth, which is where the data here is synced from. MCReference never mirrors, re-hosts or repackages a file: every download button points at the original source, so you get exactly what the author published.
Works on the same versions
Ordered by how much of the recent Minecraft version coverage overlaps, not by popularity.
Is this information wrong or missing something? .