kutils
by kociumba
kutils is a Fabric client mod that gathers quality-of-life tweaks, a Hypixel SkyBlock UI set and an ImGui-based config screen into one client-side package for Minecraft 1.21.1 – 1.21.5.
What it does
Its features cover client-side tweaks such as a custom damage tint with an opacity setting that can be set to zero, a client-only time changer that freezes time for a chosen tick amount, an always-sprint toggle that resets on death, a CPU and RAM statistics HUD, and a custom window title read from the game config. Removing block-breaking particles disables them outright rather than hiding them, and fullbright works by raising gamma.
The mod also includes SkyBlock-oriented pieces: a Bazaar UI, a calculator bound by default to a key, and a note-taking tool with pinnable custom text. The author notes that the SkyBlock features are kept within bounds meant to stay legal under Hypixel rules, since everything runs on the client. The config screen is built with ImGui and draws on the ImGui Minecraft bindings, so it can be dragged outside the game window. Fabric API and Fabric Language Kotlin are required, and the game config is opened with right shift.
Key features
Damage tint control
A custom damage tint can be adjusted, and its opacity can be set to 0 to remove it entirely.
Client-side time changer
Time can be frozen for a set number of ticks on the client only, without affecting the server.
ImGui configuration screen
Settings open in an ImGui window that can be moved outside the Minecraft window, with a calculator and note panel alongside.
Bazaar and calculator UI
A Bazaar interface and a simple calculator are bound to default keys, with some layout adjustments still pending.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 2
Use cases
Performance-minded play
Players who want fewer visual effects can turn off block-breaking particles and lower the damage tint.
SkyBlock sessions
Players on SkyBlock can open the Bazaar interface and calculator from the keyboard during a session.
Who it’s for: Players on Fabric 1.21.1 – 1.21.5 who want client tweaks and SkyBlock helpers, and who run the mod on their own game only.
How it compares
SBFixes is a client-side only Fabric mod for 1.21.11, released under the GNU General Public License v2.0 or later and open source. Simple Fullbright is client-side only and open source under the MIT License, but only for 1.16.1 and does not cover the wider tweaks kutils provides. Cat Client is client-side only and built for 1.21.11, with its license reserved, so its source is not open.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| kutils | Fabric | 1.21.1 – 1.21.5 | Client-side only | 2025-06-16 |
| SBFixes | Fabric | 1.21.11 | Client-side only | 2026-06-10 |
| Simple Fullbright | Fabric | 1.16.1 | Client-side only | 2025-08-05 |
| Cat Client | Fabric | 1.21.11 | Client-side only | 2026-07-18 |
Questions
Does kutils need Fabric API?
Is kutils needed on the server?
Which versions does kutils support?
In the catalog
kutils is one of 3,545 Optimization mods on ModsFinder, and one of 2,575 Optimization mods for Fabric. 15,307 mods support Minecraft 1.21.5.
Similar mods
What the author says
A collection of qol features and tweaks that I am used to from 1.8.9 but for 1.21+ with some unique features for hypixel skyblock features. This mod is fully client sided and tries to stay within the bounds of hypixel mod legality.
Official listing
- Modrinth page
- modrinth.com/mod/kutils
- Owner
- kociumba
- Published
- 2024-12-01
- Updated on Modrinth
- 2025-06-16
- Facts verified
- 2026-10-15