PacketDiscard

Name: PacketDiscard
Author: gstaaij

PacketDiscard, a Fabric server-side mod, drops roughly half of the non-essential packets a server would otherwise send to players.

FabricServer-side onlyGNU Lesser General Public License v3.0 onlyOpen source1.19.4 – 1.21.1

What it does

By dropping roughly half of the outgoing packets the server would otherwise send, the mod cuts network traffic, but it keeps login, chunk loading and keep-alive packets intact. Only the server needs it, so players join without installing anything. Builds cover 1.19.4 – 1.21.1 and require Fabric API, with the latest file 1.1.0+1.20 for 1.20.1, released 2026-01-04 under the GNU Lesser General Public License v3.0 only.

Key features

Partial packet discard
Roughly half of non-essential packets the server would send are dropped before they reach players.
Essential packets kept
Login, chunk load and keep-alive packets are never discarded, so connections and world loading stay intact.
Server-side only
Installing it on the server alone is enough; clients need nothing extra.

Compatibility

Latest build for each game version and loader.

Version

1.21.11.1.0+1.21

1.211.1.0+1.21

1.20.61.1.0+1.20.5

1.20.51.1.0+1.20.5

1.20.41.1.0+1.20.4

1.20.11.1.0+1.20

1.201.1.0+1.20

1.19.41.1.0+1.19.4

ReleaseBetaAlphaNot available

Only full game releases are shown. This mod publishes no snapshot builds.

Requirements

Dependencies declared by the latest file for each loader.

Required 1

Fabric APILightweight and modular API providing common hooks and intercompatibility measures utilized by mods using the Fabric toolchain.

Required

How it compares

Full comparison

Packet Ignore Fabric 1.19+ Port is also server-side only and open source under the GNU Lesser General Public License v3.0 only, built for 1.19.2 – 1.20.6. PacketIgnore is server-side only, open source under the same license, and targets 1.16.4 – 1.16.5.

Mod	Loaders	Game versions	Environment	Updated
PacketDiscard	Fabric	1.19.4 – 1.21.1	Server-side only	2026-01-04
Packet Ignore Fabric 1.19+ Port	Fabric	1.19.2 – 1.20.6	Server-side only	2024-04-21
PacketIgnore	Fabric	1.16.4 – 1.16.5	Server-side only	2021-01-10

Questions

Does PacketDiscard need Fabric API?

Yes. Fabric API is a required dependency and must be installed alongside PacketDiscard on the server.

In the catalog

PacketDiscard is one of 7,555 Cursed mods on ModsFinder, and one of 4,235 Cursed mods for Fabric. 32,366 mods support Minecraft 1.21.1.

Cursed mods7,555 Fabric mods Mods for 1.21.132,366

Similar mods

Load My F***ing Tags1.17.1 – 1.21.11

Philips Ruins1.18.2 – 1.21.11

From The Fog1.19 – 26.2

BetterHurtCamb1.7.3 – 26.3

Chunks fade in1.18 – 26.3

Inventory Particles1.20.1 – 26.3

What the author says

PacketDiscard is a server-side mod that discards (doesn't send) 50% of packets the server tries to send, except for the essential ones like login packets, Chunk load packets and keep-alive packets. Thanks to YTG1234 for PacketIgnore, the mod that inspired me to make this one.

gstaaij, on the Modrinth page

Official listing

Modrinth page: modrinth.com/mod/packetdiscard
Owner: gstaaij
Published: 2023-09-18
Updated on Modrinth: 2026-01-04
Facts verified: 2026-10-15