OptiFab
ModpackImplement Optifine function on Fabric
Mod grades
How grades workModpacks get no grade of their own, so we show the grades of its mods. Of its 25 graded mods, 25 are graded A or B, 0 C and none D to F. Its last update came out 9 months ago, for Minecraft 1.21.11. See the mods
Images
About
OptiFab is a Fabric modpack that brings together mods replacing OptiFine features, so players do not have to assemble those alternatives individually. Its focus is graphics and visual options such as rendering optimizations, support for HD resource packs and custom textures, shaders, and dynamic lighting. By collecting these alternatives in one pack, OptiFab also eases the work of rebuilding a setup when updating or reconfiguring it.
Written from Modrinth . How we write it
Mods in this pack
The mods of its newest release (Minecraft 1.21.11 · Fabric, 25 Jan 2026). Each check result is for the latest files of that mod, which may not be the version in this pack.
Cloth Config APIMod · 569.3M downloadsAPassed
Fabric APIMod · 527.1M downloadsAPassed
Entity CullingMod · 425.1M downloadsAPassed
SodiumMod · 412.7M downloadsAPassed
Iris ShadersMod · 337.4M downloadsAPassed
[ETF] Entity Texture FeaturesMod · 272.2M downloadsAPassed
[EMF] Entity Model FeaturesMod · 252.9M downloadsAPassed
Mod MenuMod · 244.6M downloadsAPassed
LithiumMod · 242.4M downloadsAPassed
Fabric Language KotlinMod · 218.7M downloadsAPassed
Sodium ExtraMod · 181.1M downloadsAPassed
Reese's Sodium OptionsMod · 166.6M downloadsAPassed
ContinuityMod · 145.1M downloadsAPassed
Dynamic FPSMod · 126.3M downloadsAPassed
LambDynamicLights - Dynamic LightsMod · 111.3M downloadsAPassed
More CullingMod · 101.8M downloadsAPassed
Language ReloadMod · 76M downloadsAPassed
PuzzleMod · 50.9M downloadsAPassed
OptiGUIMod · 41.3M downloadsAPassed
CapesMod · 37.2M downloadsAPassed
SkyboxifyMod · 18.5M downloadsAPassed
Ok Zoomer - It's Zoom!Mod · 15.1M downloadsAPassed
Better Block EntitiesMod · 13.5M downloadsAPassed
LambdaBetterGrassMod · 11.5M downloadsAPassed
Enchanted's Sodium OptionsMod · 75K downloadsAPassedDetails
Security
No harmful code found in its mods
We checked all 25 mods and the files in the pack itself, without running them.
Why we show this: a modpack installs the files of its mods, and each mod runs on your computer like any program. Our checks look for known signs of harm. They cannot prove that a file is harmless. In the grade: a modpack has no grade of its own, and each mod's result counts in that mod's grade.
How we checked
- Its projects25 mods
- Files in the pack itself30 settings files, 2 other files, no mod jars.
- Author on ModrinthThe disclosure form on Modrinth, where the author declares that the project reads or edits things on your system outside the game. Since 13 Aug 2026, Modrinth's rules require it when this applies.Nothing declared about your system outside the game.
Privacy
4 mods send something about you
We read the code of all 25 of its mods, without running it.
Why we show this: a modpack runs the code of its mods, and a mod can send things about you over the internet, like your player name or your login. Contacting an address to check for updates or download files sends nothing about you. Not in the grade: sending data can be normal for what a mod does.
How we checked
- Go online onlyTheir code contacts a web address, for example to check for updates. We found nothing it sends about you.2 mods
- Send nothingTheir code contacts no web address.19 mods
AI
AI used in 1 of the 25 mods we checked
We found an AI tool in it, or its author declared AI content.
No sign so far that AI was used to make the pack itself
We looked for AI tools in its texts and found none.
We have not read its files, images and code history yet.
Why we show this: some players and servers avoid projects made with AI, and AI in the game can send what you write to an online service. Not in the grade: using AI does not tell whether a project works well or is kept up to date.
How we checked
- Author on ModrinthThe disclosure form on Modrinth. Since 13 Aug 2026, Modrinth's rules require it when a substantial part of the code is AI output, when an asset is mainly AI output, or when the project or its page relies on generative AI.No AI content declared.
- Code historyThe public code on GitHub: who made each change, credit lines such as "Co-authored-by", and its files.Not read yet
- Description and changelogsThe description, project page and newest changelogs: sentences saying an AI tool was used, and text pasted from an AI chat.Nothing found20 changelogs read
- Its filesFiles that AI coding tools leave behind (like AGENTS.md), and the texts inside the files you download.Not read yet
- Images in its filesHidden data in the images of the files you download, where AI image tools write their name and settings.Not read yet
Compatibility
See all 22 filesPoint at or tap a version to see its loaders.