Open Prism Launcher, edit the instance you wish to install OptiFine on, open the Version tab and click Add to Minecraft.jar, select the extracted / modified OptiFine jarmod (the file ending in _MOD.jar) and confirm.

Move all files from the folder called notch to the top folder of the archive file and click save.Extract the MOD jar with the OptiFine installer.Make sure to have the version of Minecraft that you wish to install OptiFine on installed through the vanilla launcher. OptiFine will now be installed as a jarmod in that instance, so you can remove the installer and extracted jarmod.įrom OptiFine Version H1_pre2 the instructions for installing OptiFine on Prism Launcher have changed. Now in Prism Launcher edit the instance you wish to install OptiFine on, open the Version tab and click Add to Minecraft.jar, select the extracted OptiFine jarmod (the file ending in _MOD.jar) and confirm. Now click the download button to download your OptiFine jar file.Įxecute the OptiFine jar file and change the selected folder location if required, then hit the 'Extract' button and save the jarmod file somewhere you'll remember.

Go to and find your respective Minecraft version (eg. This method requires you either have the Minecraft version you wish to install OptiFine on to be installed through the vanilla launcher or to recreate the folder structure somewhere on your system (like /.minecraft/versions/ 1.18.2/ 1.18.2.jar). Therefore, you should consider the use of OptiFine alternatives whenever possible. Because OptiFine is an old, closed-source project, it has evolved to cause many mod incompatibilities, and doesn't do as good of a job as some the alternatives out there.Īlso, if you're using the Fabric mod loader, there's no native support for it, and the current workaround is known to be buggy and quite unstable, due to the very nature of OptiFine and OptiFabric.

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