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Offline Mode Fix

A Fabric mod that fixes chat lag spikes and UI warnings on offline-mode Minecraft servers

Fabric
Loaders
Fabric
Downloads on Modrinth
9.8K
Followers on Modrinth
6
versions
25
Updated
October 14, 2026Oct 14
Published
in 2026
Config menu · swipe

At a glance

Runs on Fabric
For Minecraft 1.20–26.3
Client only — no need to install it on the server
Latest version — 1.1.0+26.3 from October 14, 2026
Requires Fabric API
License MIT — free
Where it's needed
In gamerequiredOn servernot needed

Install in the game only; not needed on the server

Game versions1.20–26.3

Offline Mode Fix

A lightweight client-side Fabric mod that fixes chat lag spikes and UI issues on offline-mode Minecraft servers.

Features

The mod aims to fix some unnecessary or broken behaviors in offline-mode clients, as well as restore some features normally exclusive to online-mode:

  • Reduced chat lag - skip player blocklist checks that cause lag spikes.
  • Fewer "Unverified Server" warnings - hide first-join toast and message tag indicator.
  • Restored player heads - Bring back player heads in the player list.

And most features can be configured in-game with Mod Menu easily!

Compatibility

The mod is designed to preserve normal behavior on online-mode servers so you can leave the mod installed without any issues. If necessary, you can enable overrideOnlineModeBehavior, but be aware that it may cause unexpected behavior.

It also DOES NOT:

  • Act like an authentication method.
  • Reimplement all online-mode exclusive features.

It's a client-side mod! Please don't use it on servers.

Contributing

Contributions are welcome! Feel free to open an issue or submit a pull request on Codeberg.

This project supports multiple Minecraft versions using Stonecutter. Please make sure your changes work across the relevant versions before submitting a pull request.

FAQ

How to install Offline Mode Fix?

Install Fabric for your Minecraft version, download Offline Mode Fix for the same version and loader, put the file into the mods folder and launch the game with the loader profile.

Which Minecraft versions does Offline Mode Fix support?

Offline Mode Fix has builds for Minecraft 1.20–26.3.

Is Offline Mode Fix needed on the server?

Client only — no need to install it on the server

License and source
MIT Licensefree to use and share with credit to the author
Original — Modrinth↗Files unchanged, verified with SHA-512Is this your mod? For rights holders

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