OptiFine for Fabric
ModpackClassic graphics options and smoother gameplay, powered by Fabric mods.
- Security
- Passed
- Privacy
- 6 send data
- Runs on
- Client, server optional
- Loaders
- Fabric
- Minecraft versions
- Up to 26.3
Mod grades
How grades workModpacks get no grade of their own, so we show the grades of its mods. Of its 69 graded mods, 62 are graded A or B, 6 C and 1 D to F. Its last update came out 6 weeks ago, for Minecraft 26.3. See the mods
This author published several projects at once on Modrinth: up to 10 projects published within 2 weeks. 4 of the author's 13 projects have only one release and no source code link. A series of small add-ons is often published this way. It does not change the grade.
Images
About
OptiFine for Fabric is a performance-focused modpack that brings OptiFine-style graphics and resource-pack features to Fabric using modern optimization mods such as Sodium, Iris Shaders, and Lithium. It aims to improve frame rates and reduce stuttering and lag, including on lower-end systems, while retaining familiar visual options. Visual features include shader compatibility, dynamic lighting, connected textures, HD resource-pack support, custom block and entity models and textures, animated items, capes, custom skyboxes, and built-in zoom. The pack also includes broad performance work such as chunk and terrain-generation optimization, block and entity culling, memory-leak fixes, and integrated-server and network optimizations. Players can add their own mods for custom setups, and the project also offers a Fabric+ variant with additional quality-of-life features, including level-of-detail rendering and connections to legacy Minecraft servers.
Written from Modrinth and the GitHub README . How we write it
Content of this pack
The mods of its newest release (Minecraft 26.3 · Fabric, 18 Sep 2026). Each check result is for the latest files of that mod, which may not be the version in this pack.
Cloth Config APIMod · 570.7M downloadsAPassed
Fabric APIMod · 529.6M downloadsAPassed
Entity CullingMod · 427.6M downloadsAPassed
SodiumMod · 414.7M downloadsAPassed
Iris ShadersMod · 339.5M downloadsAPassed
ModernFixMod · 335.9M downloadsAPassed
ImmediatelyFastMod · 331.7M downloadsAPassed
FancyMenuMod · 299.8M downloadsAPassed
KonkreteMod · 295.6M downloadsAPassed
[ETF] Entity Texture FeaturesMod · 273.8M downloadsAPassed
YetAnotherConfigLib (YACL)Mod · 268.3M downloadsAPassed
[EMF] Entity Model FeaturesMod · 254.5M downloadsAPassed
Mod MenuMod · 246M downloadsAPassed
FerriteCoreMod · 245.3M downloadsAPassed
LithiumMod · 243.7M downloadsAPassed
Fabric Language KotlinMod · 219.8M downloadsAPassed
MelodyMod · 211.3M downloadsAPassed
Sodium ExtraMod · 182.4M downloadsAPassed
Reese's Sodium OptionsMod · 167.5M downloadsAPassed
Forge Config API PortMod · 156.2M downloadsAPassed
ContinuityMod · 146M downloadsAPassed
Fzzy ConfigMod · 140.8M downloadsAPassed
BadOptimizationsMod · 129.4M downloadsAPassed
Dynamic FPSMod · 126.9M downloadsAPassed
Sodium Dynamic LightsMod · 120.6M downloadsCPassed1 file not listed: no matching project found.
Details
Security
No harmful code found in its projects
We checked all 70 projects 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 projects70 projects
- Files in the pack itself35 settings files, 4 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
6 mods send something about you
We read the code of all 69 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.5 mods
- Crash reports or usage dataTheir author declares crash reports or usage data on Modrinth, or such a service is named in their files. Reading their code did not show it.1 mod
- Send nothingTheir code contacts no web address.58 mods
AI
AI used in 3 of the 69 mods we checked
We found an AI tool in them, or their authors declared AI content.
5 other mods show AI use only from after this release (18 Sep 2026), so it does not apply to the versions in this pack.
No sign so far that AI was used to make the pack itself
We looked for AI tools in its texts and code history and found none.
We have not read its files and images 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.Nothing found
- 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 61 filesPoint at or tap a version to see its loaders.
Related projects
Projects that need OptiFine for Fabric to work.
