🪐 AetherFlow (LetterboxMod)
A Minecraft Fabric mod that adds a cinematic letterbox effect when sneaking.
🧩 Features
- Smooth black bars fade in/out when sneaking (Shift).
- Bars appear behind the hotbar and other HUD elements.
- Ease-in / ease-out animation style.
- Minimal performance impact.
📦 Installation
- Install Fabric Loader.
- Install Fabric API.
- Download the latest release of LetterboxMod from Modrinth or the Releases section.
- Drop the
.jarfile into yourmods/folder. - Launch the game!
🖼️ Preview
⚙️ Configuration
No configuration needed. The mod activates the effect automatically when sneaking.
👤 Credits
Developed by @beltrancruz
Special thanks to FabricMC and the Minecraft modding community.
🪪 License
This project is licensed under the MIT License.
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 letterboxmod-1.0.0.jar — drop this file into the mods folder
- Download size: 83 KB
- Download link checked 10 Sept 2026 — working
These come from our own check of the pack file, not from the source page.