ModsJava
Memory Leak Fix
A mod that fixes random memory leaks for both the client and server. Free Minecraft Java mod for 1.17, 1.17.1, 1.18.
I don't know my version or loader
Open the Minecraft launcher and look at the profile you play on — it names both, like fabric-loader-1.21.4. The version also shows in the bottom-right corner of the game's main menu.
No loader in the profile name? Then it's plain Minecraft, and these mods won't run — you need Fabric or NeoForge installed first.
Memory Leak Fix
A mod that fixes multiple memory leaks in Minecraft. Both server-side & client-side
For the best performance & memory usage, I recommend using this mod with:
- lithium-fabric - The best general performance mod
- FerriteCore - Memory usage optimizations
My other optimizations/fixes
- MoreCulling - Changes how blockstate culling is handled to improve performance
- Carpet-Fixes - Largest Server-Side bug fixing mod
- Blanket - Client-side tweaks/fixes
- RailOptimization - Make powered rails less laggy
Minecraft 1.20.5+
All the memory leaks in minecraft previously fixed by MemoryLeakFix have been fixed. Making this mod obsolete in future versions of the game.
More Info
Feel free to contribute to the project!
I'm also fine if you use this mod in your modpacks, just make sure to mention it.
However I don't allow clients or other projects to merge this mod without permission, if you would like to use this mod in your client or another project please contact me.
Verified by MCModsHub
- Ships as memoryleakfix-forge-1.17+-1.1.5.jar — drop this file into the mods folder
- Download size: 223 KB
- Download link checked 8 Sept 2026 — working
These come from our own check of the pack file, not from the source page.