ModsFinder

OptiFine Checker

by Wudji

OptiFine Checker reminds players to install OptiFine when it finds that OptiFine HD is not loaded.

FabricForgeClient-side onlyAll rights reserved1.14.4 – 1.20.6

What it does

The checker looks for OptiFine HD when the game starts. If it is missing, the mod shows a reminder, so players who rely on OptiFine for shaders and rendering options notice the gap before they join a world. It is built for Fabric and Forge, and is published for the game versions 1.14.4 – 1.20.6 in twelve release builds. Only the client needs it, so servers do not have to install it.

Key features

  1. Simple OptiFine check

    The mod confirms whether OptiFine HD is loaded in the game when it starts.

  2. Install reminder

    When OptiFine HD is not detected, a message reminds the player to install it.

  3. Manual install note

    The mod addresses players who add OptiFine by hand to a modpack's mod folder, since OptiFine's license keeps it from being redistributed in packs.

Compatibility

Latest build for each game version and loader.

1.20.x6 of 6 versions with builds
1.20.6Not available1.6.1-forge-mc1.20.x
1.20.5Not available1.6.1-forge-mc1.20.x
1.20.4Not available1.6.1-forge-mc1.20.x
1.20.3Not available1.6.1-forge-mc1.20.x
1.20.2Not available1.6.1-forge-mc1.20.x
1.20.1Not available1.6.1-forge-mc1.20.x
1.19.x1 of 1 version with builds
1.19.41.5.2-fabric-mc1.19.41.5.1-forge-mc1.19.x
1.18.x1 of 1 version with builds
1.18.21.4.1-fabric-mc1.18.21.4.1-forge-mc1.18.2
1.17.x1 of 1 version with builds
1.17.11.2.1-fabric-mc1.16.5-1.17.11.3.2-forge-mc1.17.1
1.16.x1 of 1 version with builds
1.16.51.2.1-fabric-mc1.16.5-1.17.11.2.1-forge-mc1.16.5
1.15.x1 of 1 version with builds
1.15.2Not available1.1.2-forge-mc1.15.2
1.14.x1 of 1 version with builds
1.14.4Not available1.0.2-forge-mc1.14.4
ReleaseBetaAlphaNot available

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

How it compares

Full comparison

Modpack Update Checker is a Fabric, Forge, NeoForge and Quilt mod covering 1.16.5 – 1.21.6 under a Creative Commons non-commercial license, and it is not open source. Mandatory Optifine is Forge-only for 1.14.4 – 1.20.1, requires both client and server, and is also not open source.

ModLoadersGame versionsEnvironmentUpdated
OptiFine CheckerFabric and Forge1.14.4 – 1.20.6Client-side only2024-06-14
Modpack Update CheckerFabric, Forge, NeoForge and Quilt1.16.5 – 1.21.6Client or server, optional2025-06-22
Mandatory OptifineForge1.14.4 – 1.20.1Client and server2024-08-02

Questions

Does OptiFine Checker need to be installed on the server?

No. Only the player's game needs it, and servers run without it.

Which loaders does OptiFine Checker support?

The mod is published for Fabric and Forge. The latest Fabric file is 1.5.2-fabric-mc1.19.4 for 1.19.4, and the latest Forge file is 1.6.1-forge-mc1.20.x for 1.20.6.

More from Wudji

All projects
XPlus Autofish (Fabric / Forge / NeoForge)1.18.2 – 26.3XPlus ContingameIME1.21 – 1.21.5NoPackCompatCheck1.18.2 – 26.3Villager Trading Overhaul1.20.1 – 26.2Background Music Selector1.16.5 – 1.19.2

What the author says

The license of Optifine prevents it from being distributed, but there are times when players may not install Optifine manually to the modpack's mod folder. This mod will remind players to install Optifine when it detects that Optifine HD is not loaded properly.
Wudji, on the Modrinth page

Official listing

Owner
Wudji
Published
2024-06-14
Updated on Modrinth
2024-06-14
Facts verified
2026-10-15
Open on ModrinthCompare