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LangSwitch project artwork

Modrinth · Minecraft mod

LangSwitch

Instantly toggle Minecraft's UI language with one key — no reload, no menu diving. Switch between your language and the one you're learning even while a GUI (inventory, books) is open. Perfect for language learners comparing translations.

Choose a version Pick your version below, then grab the matching file.

Quick answer

Which LangSwitch release matches 1.21.5 Forge?

Updated 4 months ago
Best match for your filters 1.0.0
Game version 1.21.5
Loader Forge

LangSwitch 1.0.0 targets 1.21.5 with Forge. It must be installed on the client. Do not install it on the dedicated server. No extra mods listed for this file.

Where it goes

Is LangSwitch required on the client, server, or both?

It must be installed on the client. Do not install it on the dedicated server.

Client Required
Dedicated server Not supported
Loader for this release Forge
Required install it here Optional supported, not mandatory Not supported do not install here Source doesn’t say do not assume

This file is marked client-only.

What else does LangSwitch 1.0.0 need?

1.0.0 on 1.21.5 Forge. Every mod below is checked against that same setup.

No extra mods listed for this file

This file does not list any required mods. Do not add a library just because a different file uses it.

This file does not list any required or optional mods.

Before you install it

Add LangSwitch without breaking your instance.

Built for LangSwitch 1.0.0 on 1.21.5 Forge. Pick another file and the loader, install side or required mods may change.

  1. 01

    Stick to this file

    Use 1.0.0. It targets 1.21.5 with Forge; another release may have different loader, side or dependency requirements.

  2. 02

    Bring the mods it needs

    This file does not list any required mods. Do not add a library just because a different file uses it.

  3. 03

    Put it on the correct side

    It must be installed on the client. Do not install it on the dedicated server.

  4. 04

    Pick the file you checked

    Use the “Get this file” button beside 1.0.0. It opens that exact file at the source.

About this project

What does LangSwitch add?

imageLangSwitch

Instantly switch the game's display language with a single key press.

Vanilla Minecraft's Options → Language menu triggers a full resource reload every time you switch, causing a noticeable multi-second stutter. LangSwitch skips that reload entirely, so the language changes instantly with effectively zero load time.

Features

  • One-tap language toggle: press your configured toggle key to switch between your chosen target language and whichever language you were just using
  • Instant, load-free switching: swaps only the language data directly instead of triggering a full resource-pack reload, so there's virtually no delay
  • Works even with a GUI open: the toggle key still works while inventories, books, chests, etc. are open — great for comparing translations while playing (ideal for language learning)
  • Ctrl-modifier to prevent misfires: the toggle key only fires when held together with Ctrl, so it won't accidentally trigger while typing in chat or on a sign
  • Google Translate–style searchable language picker: pick your target language from a searchable list instead of hunting through raw language codes
  • Dedicated config keybind: registered in the vanilla key-binding menu, so you can always reopen the settings screen to change anything

How to use

  1. Press the key that opens the settings screen (default: J)
  2. Click "Toggle key" and press any key to bind it (fires as Ctrl + that key)
  3. Click "Switch to" and search for/select your target language
  4. In-game, hold Ctrl and press your bound key to instantly toggle between your target language and whatever language you were using

Supported environment

  • Client-side only (no server-side install required)
  • Supported loaders: Forge / NeoForge / Fabric
  • Supported versions: 1.20.1 through 1.21.11

Project description from Modrinth.

Pick your setup

LangSwitch by Minecraft version and loader

Choose the version and loader you play, then open the matching release.

33 available setups

Showing the newest 12 of 15 game versions. Older files are in the list below.

Check the dependencies, then try the file in a copied instance before changing a world you care about.

Recent files

LangSwitch versions and loaders

1 of 31 releases match
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Looking for an older file? The official Modrinth project page is in Resources.