Optifine On Fabric
ModpackSmoother play with shaders, zoom, and extra visual options.
- Security
- Passed
- Privacy
- 4 send data
- Runs on
- Client only
- Loaders
- Fabric
- Minecraft versions
- Up to 1.21.9
Mod grades
How grades workModpacks get no grade of their own, so we show the grades of its mods. Of its 29 graded mods, 29 are graded A or B, 0 C and none D to F. Its last update came out 12 months ago, for Minecraft 1.21.9. See the mods
Images
About
Optifine On Fabric is a performance-focused modpack that brings a selection of Optifine-like features to Fabric while remaining usable for vanilla play or alongside other mods. It combines performance improvements such as faster chunk loading, entity culling, and Dynamic FPS with visual options including shader support, dynamic lighting, connected textures, fog control, animatable textures, and random mob variants. The pack also provides zooming, Optifine cape support, and a better advancements menu; it does not include every Optifine feature, with better grass and variable render distance listed as absent.
Written from Modrinth . How we write it
Content of this pack
The mods of its newest release (Minecraft 1.21.9 · Fabric, 27 Oct 2025). Each check result is for the latest files of that mod, which may not be the version in this pack.
Cloth Config APIMod · 570M downloadsAPassed
Mouse TweaksMod · 548.6M downloadsAPassed
Fabric APIMod · 528.4M downloadsAPassed
Architectury APIMod · 460.4M downloadsAPassed
Entity CullingMod · 426.8M downloadsAPassed
ClumpsMod · 420.6M downloadsAPassed
SodiumMod · 413.7M downloadsAPassed
Iris ShadersMod · 338.7M downloadsAPassed
BalmMod · 330.2M downloadsAPassed
Better AdvancementsMod · 284.8M downloadsAPassed
YetAnotherConfigLib (YACL)Mod · 267.8M downloadsAPassed
Mod MenuMod · 245.3M downloadsAPassed
LithiumMod · 243.1M downloadsAPassed
Fabric Language KotlinMod · 219.2M downloadsAPassed
Sodium ExtraMod · 181.8M downloadsAPassed
Reese's Sodium OptionsMod · 167.2M downloadsAPassed
Dynamic FPSMod · 126.6M downloadsAPassed
Zoomify (Zoom)Mod · 116.7M downloadsAPassed
BetterF3Mod · 116.2M downloadsAPassed
More CullingMod · 102.3M downloadsAPassed
Text Placeholder APIMod · 92.2M downloadsAPassed
Client TweaksMod · 86.1M downloadsAPassed
MRUMod · 55.8M downloadsAPassed
CapesMod · 37.3M downloadsAPassed
Fast Better GrassResource pack · 25.7M downloadsAPassedChanges since the previous release
Compared with the release of 4 Oct 2025 for the same platform, Minecraft version and loader. We do not compare the versions of the projects yet.
- Added
- BetterF3Entity CullingSodium ExtraBetter AdvancementsMRU
FogMouse TweaksFast Better Grass
Dark Loading ScreenArchitectury API - Share graded A or B
- unchanged
Details
Security
No harmful code found in its projects
We checked all 29 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 projects29 projects
- Files in the pack itself40 settings 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 28 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.22 mods
AI
No sign that AI was used to make its mods
We found no AI use from before this release (27 Oct 2025) in the 28 mods we checked.
4 mods show AI use only from after it, 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 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.
- Description and changelogsThe description, project page and newest changelogs: sentences saying an AI tool was used, and text pasted from an AI chat.Nothing found11 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 11 filesPoint at or tap a version to see its loaders.