Spirity BoostXModpacks · 1.21 – 26.xA lightweight Fabric optimization modpack focused on maximum FPS, smooth gameplay, and reduced lag for low-end, mid-range, and high-end devices.

OptiFine features for Fabric — powered by Fabric optimization and modern Minecraft performance mods. High FPS even on low‑end systems. Shaders! 26.3…
Direct download from Modrinth · 745,409 downloads
OptiFine for Fabric is a modpack made by iFamished. OptiFine features for Fabric — powered by Fabric optimization and modern Minecraft performance mods. High FPS even on low‑end systems. Shaders! 26.3…
It supports Minecraft 1.16 – 26.x. It has been downloaded 745,409 times on Modrinth. The last update came out on Nov 11, 2026.
OptiFine for Fabric has had 61 releases on Modrinth since Jan 16, 2025. 14 of them came out in the past year. The newest is 4.1-alpha.1, released on Sep 18, 2026. It is made for Minecraft 26.3. It runs on Fabric. The download is 928 KB.
| Version | Released | Minecraft | Type |
|---|---|---|---|
4.1-alpha.1 | Sep 18, 2026 | 26.3 | Alpha |
4.1-alpha.1 | Jun 19, 2026 | 26.2 | Alpha |
5-alpha.1 | Jun 17, 2026 | 1.21.11 | Alpha |
4.1-alpha.3 | Jun 17, 2026 | 26.2 | Alpha |
4.1-alpha.2 | Jun 16, 2026 | 26.2 | Alpha |
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OptiFine for Fabric v5 brings many exciting new features to the pack. During the alpha stage, v4 will continue to be supported and updated to the newest versions, rather than v5. Please report any bugs you find!
OptiFine for Fabric is a Fabric optimization modpack designed to being OptiFine-style features to Fabric, powered by modern Minecraft performance mods like Sodium, Iris Shaders, Lithium, and more. Perfect for players searching for modern OptiFine alternatives.
Benchmarked on a mid-range desktop computer.
To get the correct version of OptiFine for Fabric for your setup:
How to compare versions:
Pick the version with the highest numbers from left to right.
Examples:
If no stable releases exist for your Minecraft version, you may use an alpha, beta, or dev build. These appear clearly labeled in the selector.
Detailed Version Guide
OptiFine for Fabric uses a structured versioning system. Every release follows this format:
[.[.]][-channel[.]]
Examples:
The version number describes the pack itself, not the Minecraft version. Minecraft compatibility is shown separately on Modrinth.
Large updates to the pack.
This number only increases when the pack undergoes a significant redesign or major feature shift.
Normal updates within a major version.
This increases when the pack receives meaningful improvements, mod additions, compatibility changes, etc.
A patch‑level counter within the same Minecraft version.
This number increases when the pack receives bug fixes or small adjustments for that specific Minecraft version.
This number resets when Minecraft updates, because each Minecraft version starts its own patch sequence.
Examples:
Build numbers simply indicate bug fixes and other minor changes tied to Minecraft versions.
Channels appear after a dash.
Recency is shown by the dot and the number.
Minecraft compatibility is shown on Modrinth, while the version number reflects the evolution of the pack itself.
Written by iFamished. Read it with pictures on Modrinth.
This modpack runs on Fabric for Minecraft 1.16 – 26.x. The launcher you install it with sets that up for you.
Download the .mrpack file from Modrinth.
Open it with a launcher that reads .mrpack files, such as the Modrinth App or Prism Launcher: it makes a new instance with every mod and setting of the pack.
Give the instance enough memory: most modpacks want 4 to 8 GB.
To play it with friends on a server, use the server files of the modpack if its page offers them; otherwise install the same mods on the server.
Full guide: How to install Minecraft mods
| Resource | Downloads | Versions | Last update | Price |
|---|---|---|---|---|
| 745K | 1.16 – 26.x | 3 days ago | Free | |
| 47K | 1.21 – 26.x | Aug 3, 2026 | Free | |
| 33K | 1.21 | Jun 5, 2026 | Free | |
| 222K | 1.20 – 26.x | Jun 7, 2026 | Free |
Yes. OptiFine for Fabric supports Minecraft 26.x. All supported versions: 26.x, 1.21, 1.20, 1.19, 1.18, 1.17, 1.16.
Yes. OptiFine for Fabric is free to download from Modrinth.
Yes. The last update came out in the past day.
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