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OptiCore

OptiCore

A lightweight optimization pack for Minecraft Fabric — delivering maximum performance without compromising vanilla features or gameplay.

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Compatibility

Minecraft: Java Edition

26.1.1–26.1.2
1.21.11

Platforms

Supported environments

Client-side

Tags

Creators

Details

Licensed ARR
Published last month

⚙️ OptiCore — Fabric Optimization Pack

A lightweight optimization pack for Minecraft Fabric — delivering maximum performance without compromising vanilla features or gameplay. This is an optimization pack built for players who want the best of both worlds: significant performance gains with zero compromise on the vanilla experience. Whether you're playing on a low-end machine, chasing higher FPS, or running a multiplayer server — OptiCore is built for you.

Features:

  • Performance & FPS Boost — Significantly improved performance and higher FPS, thanks to a carefully selected set of optimization mods.
  • Shader Support — Enhance your game's visuals with beautiful shaders, included and ready to use out of the box.
  • Dynamic Lighting — Light up your surroundings by holding torches and other light sources, without placing them down.
  • Quality of Life — A collection of small but impactful improvements: better chat history, faster quitting, improved advancement screen, shulker box previews, zoom and more.
  • Fully Vanilla Compatible — No new items, blocks, or mechanics. Play on any vanilla server without issues. Performance Monitoring — Built-in profiling tools to track and diagnose performance in real time.
  • OptiFine Parity — Enjoy features you know from OptiFine — capes, custom GUIs, custom skyboxes, connected textures, and more — all without the performance cost.

mods:

Spoiler

🚀 Performance

  • Sodium + Sodium Extra — Massively improved rendering engine & extra settings
  • Lithium — General-purpose game logic optimization
  • ImmediatelyFast — Speeds up immediate mode rendering
  • FerriteCore — Significant memory usage reduction
  • BadOptimizations — Various small optimizations
  • Concurrent Chunk Management Engine — Faster, async chunk loading
  • Dynamic FPS — Reduces resource usage when tabbed out
  • Entity Culling + More Culling — Skips rendering non-visible entities & objects
  • Debugify — Fixes dozens of vanilla bugs affecting performance
  • Krypton — Optimizes the networking stack, reducing latency
  • ModernFix — General-purpose optimizations, complements Lithium
  • Noisium — Speeds up world generation
  • Packet Fixer — Fixes issues with large network packets

🎨 Visuals

  • Iris Shaders — Shader support with minimal performance cost
  • Complementary Shaders - Reimagined — Beautiful default shader pack (included)
  • [EMF] Entity Model Features — Custom entity model support
  • [ETF] Entity Texture Features — Custom entity texture support
  • **LambDynamicLights **— Dynamic lighting without compromising FPS
  • Cubes Without Borders — Removes borders between same-type blocks
  • Zoomify — Smooth, customizable zoom
  • BetterGrassify — Improved grass rendering, similar to OptiFine's better grass
  • Capes — Supports OptiFine, Minecraft, and LabyMod capes
  • OptiGUI — Custom GUI textures via resource packs, like OptiFine
  • Skyboxify — Custom skybox support via resource packs
  • Puzzle — Adds OptiFine-like resource pack features
  • Fabrishot — High-resolution screenshot support

🛠️ Quality of Life

  • Better Advancements + Paginated Advancements — Improved advancement screen
  • Better Mount HUD — Shows mount health & jump bar clearly
  • Mod Menu — In-game mod list & config access
  • Reese's Sodium Options — Better UI for Sodium settings
  • More Chat History — Longer chat history
  • Emoji Type — Type emojis directly in chat
  • Language Reload — Reload language without restarting
  • FastQuit — Quit to menu instantly without waiting
  • Remove Reloading Screen — Skip the resource pack reload screen
  • Shulker Box Tooltip — Preview shulker box contents on hover
  • CalcMod — In-game calculator
  • Crash Assistant — Helpful crash diagnostics

🔒 Privacy & Security

  • No Chat Reports — Removes chat reporting system
  • Chat Reporting Helper — Clarifies reporting status in chat

✅ What OptiCore does NOT change

No new items, blocks, or mechanics 100% vanilla-compatible worlds and servers No gameplay modifications — pure performance & QoL

⚠️ Note for version 26.1.1 - 26.1.2 : Due to major technical changes introduced in Minecraft 26.1, several mods have not yet been updated for this version. The following mods are temporarily unavailable in this release:

26.1.1:

  • Better Advancements — replaced with Advancements Reloaded as a temporary alternative
  • Emoji Type — replaced with Chat Emojis
  • FastQuit — no compatible alternative available yet; removed temporarily
  • Debugify — no compatible version for 26.1.1 yet; removed temporarily

26.1.2:

  • Emoji Type — replaced with Chat Emojis
  • FastQuit — no compatible alternative available yet; removed temporarily

These mods will be re-added as soon as compatible versions are released.

Thanks for downloading OptiCore ❤️

Thanks for creabit for all of the small help with the project