Hopper Filter

Minecraft [Fabric] mod to allow hoppers filter what can be passed through.

510 Downloads

fabricgame-mechanicsmanagementstorage

Rent Server with this Mod

Screenshots

About this Mod

Hopper Filter

Info

This server-only mod allows hoppers to have a whitelist filter, in order to let pass only items that are in the list.

Installation

The mod needs to be installed server-side only, or on the client for offline usage.

Usage

Hopper filter usage demo

Filter is set by using a stick on any hopper. It will open a screen where items can be added or removed. The items will not be taken from the player's inventory.

When the filter is empty, the hopper will act just like in vanilla Minecraft.

Screenshots

Hopper filter

Available Versions

Hopper Filter 1.0.0release

MC 1.21.6, 1.21.7, 1.21.8fabric

July 9, 2025

How to Install Hopper Filter on Your Server

Order Server

Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).

Set fabric Loader

In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.8).

Install Mod

Open the mod browser in the dashboard and search for "Hopper Filter". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

fabric

Minecraft Versions

1.21.8, 1.21.7, 1.21.6

Server-side

✓ Required

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

Hopper Filter server crashes on startup – what to do?

Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.21.8). You can switch loaders with one click in the panel.

Is Hopper Filter compatible with fabric?

Hopper Filter officially supports fabric for Minecraft 1.21.8, 1.21.7, 1.21.6. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Hopper Filter – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Hopper Filter consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.