OptiFine is an established performance mod ideal for the Forge modloader.
<aside> <img src="/icons/info-alternate_gray.svg" alt="/icons/info-alternate_gray.svg" width="40px" /> This guide explains how to install OptiFine.
</aside>
OptiFine is compatible solely with the Forge modloader and is not supported on Fabric. If you are using Fabric, please install Sodium & Iris.
To identify which modloader you're using, refer to the bottom left corner of your screen.