How To Download & Install OptiFine (Minecraft 1.21.3)

Do you want to know how install OptiFine 1.21.3 in Minecraft? Well, in this video, we showed you exactly how to get OptiFine for Minecraft 1.21.3. With OptiFine, you will be able to boost Minecraft’s performance and do things like add shaders to Minecraft 1.21.3. This video is your complete guide on adding OptiFine to Minecraft, so let’s jump into it!

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-NotiFine Modpack (OptiFine Alternative)-

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About this video: This video is our complete guide on how to download and install OptiFine 1.21.3 in Minecraft. Why would you want to get OptiFine 1.21.3? Well, with OptiFine, you can increase Minecraft’s performance boosting FPS and reducing lag. However, what’s really cool about OptiFine is that it works both ways. You can also use OptiFine to increase the look of Minecraft 1.21.3 using things like shaders. Shaders completely change and improve the look of Minecraft, and you can use OptiFine to get shaders in 1.21.3. Let’s jump into it!

First things first, we will need to go over how to download OptiFine 1.21.3. There is a link to download OptiFine in the description above. That will take you to our complete text guide on getting OptiFine. On that page, click the “Download OptiFine” button to go to Optifine’s official download page. From there, find the 1.21.3 version of OptiFine and click “mirror” next to it.

That will take you to the 1.21.3 page for downloading OptiFine. Click the “Download” button here, and OptiFine 1.21.3 will start downloading right away. You may need to keep or save the file depending on your browser.

From there, we can move on to how to install OptiFine 1.21.3 to Minecraft. To do this, open the Optifine file you downloaded with Java. If you don’t have Java, there is a link in the description above to download Java.

When you open the OptiFine Installer with Java, click on “Install”, and OptiFine 1.21.3 will begin installing. Make sure you have played Minecraft 1.21.3 and that Minecraft and the Minecraft Launcher are closed. Otherwise installing OptiFine won’t work.

Now, open the Minecraft Launcher. In the Minecraft Launcher, you will have an OptiFine 1.21.3 installation. Play Minecraft using this installation, and Minecraft 1.21.3 will open up with OptiFine installed! You will need to confirm you are playing modded Minecraft when launching Minecraft with OptiFine.

From the main menu, there won’t be much of an indication that OptiFine is installed. To see OptiFine’s features, go to Options, Video Settings. Here, you will see 1.21.3 shaders, performance, quality, and all of OptiFine’s other settings and features.

At this point though, you now know how to download and install OptiFine 1.21.3 in Minecraft. If you have any questions about how to get OptiFine for Minecraft 1.21.3, let us know in the comments. We will try our best to help you out.

Otherwise, if we did help you learn how to add OptiFine 1.21.3 to Minecraft, be sure to give this video a thumbs up and subscribe to the channel if you haven’t already. It really helps us out, and it means a ton to me. Thank you very, very much in advance!

Note: Some of the above links are affiliate links or companies I have an ownership stake in. I may receive a commission at no additional cost to you if you go to these sites and make a purchase.

[ryanbarry]

Can’t say I’m a regular watcher but everytime I need help with something Minecraft related, your videos are always the first place I go. Thank you for all the work you and your team do

[TJ-uupg]

Thank you so much i needed all videos how to install java and jarfix to make it work. Now i can play 🤙

[Zhaxey]

Hello! thank you so much for the video! Now i finally have shaders :D i also bought minecraft earlier this year and im happy that i got the official game, it's nice!

[henricopter.]

I looked this up and assumed i was super late but then i realized this came out 1 hour ago LOL

[jhawk]

Thanks for all your videos. Helps me avoid accidentally downloading more ram.

[leoo_]

Thaannnnks, i needed sooo much this video

[NekoKrafter]

ok i think im going to have to wait for the full realse becuse all the previews arnt working but still very useful video

[katsuu]

You're always quick with these videos. I really do appreciate this channel.

[maaaaaaaaage]

I can’t get this to work with forge 1.21.3 any help? So I can use mods and shaders just keep crashing

[lilblkrose]

Woah, straight to the point while also explaining the difference of versions. Thank you so much

[canalbijunior]

Thank you, I'm from Brazil and your content goes beyond barriers, good luck my friend!

[danialmoussawi]

everytime i download stuff like these my mac always warns me that it is malicious and wont let me open it

[SimplyTutuco]

I can't place OptiFine in forge's mods folder or else it just makes the game crash as soon as it opens with Exit Code 1. Do you know why? And I can't play without optifine, so what if I wanna download other mods later?

[maooooooooooooooooo]

every time a new update comes out i gotta come back to this guys channel cus my dumbass cant remember how to download ts

[robbenog]

The Breakdown is like Andrew Price aka BlenderGuru of Minecraft
keeps making tutorials even today, never change the Breakdown never change ily

[henricopter.]

amazing video, i always come to this channel to download optifine

[Marsupial]

Will notifine release for 1.21.3 because it was literally just a download link and none of the other nonsense and i really like that

[Senshiu]

Do you offer support on modpack issues?

[thewizard]

I just watched your video of this for 1.20.1

[favnged]

when i installed it into my launcher it messed up my minecraft sounds. odd. maybe i'll just wait until it releases fully