FastFastMap
A high-performance minimap mod for Minecraft 1.21.11 (Fabric). Built for speed — parallel chunk scanning, GPU tile caching, and seamless updates with zero flicker.
Features
HUD Minimap
Always-on minimap in the bottom-right corner of your screen.
- Player direction arrow — red filled triangle with white outline, rotates with your view
- Water bathymetry — see the terrain beneath the water, depth-shaded in blue
- Smooth height shading — continuous brightness based on slope, not discrete steps
- Biome tint — grass, leaves, and water colored per biome
Fullscreen Map M
Google Maps-style tile viewer. Open with M, close with M or Esc.
- Zoom to cursor — scroll wheel zooms centered on your mouse position
- Smooth zoom animation — no jarring snaps
- LOD tile system — automatically switches tile resolution as you zoom in/out (zoom 5 = 16px/block → zoom −3 = 16 blocks/px)
- Fallback rendering — lower-res tiles shown while high-res tiles load; no black squares
- Right-click drag to pan,
Rto re-center on player
Persistent Cache
Your map data is saved to disk and restored on reconnect — no need to re-explore.
- Separate cache per server address and world name
- Auto-saves every 60 seconds and on disconnect
- Previously explored areas appear on the map instantly when you rejoin
Performance
- Chunk scanning runs on parallel worker threads (up to 4)
- GPU tile cache with LRU eviction (128 tiles max)
- Anti-flicker design — chunk updates never cause blank tiles; old tiles stay visible until the new render is ready, then swap seamlessly.
- RAM tile cache capped at 512 tiles (~128 MB)
Controls
| Key / Input | Action |
|---|---|
M |
Open / close fullscreen map |
| Scroll wheel | Zoom in / out (cursor-centered) |
| Right-click drag | Pan the map |
R |
Re-center on player |
Compatibility
Works alongside all major optimization mods.
Recommended Mods
| Mod Name | Modrinth Link |
|---|---|
| Bobby | Bobby |
| Sodium | Sodium |
| C2ME | C2ME Fabric C2ME NeoForge |
| Lithium | Lithium |
| ScalableLux | ScalableLux |
| Mod Menu | Mod Menu |
Requirements
Multi-core CPU RTX 3000 series or higher
Quick facts
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.21.11
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
Verified by MCModsHub
- Ships as fastfastmap-1.0.jar — drop this file into the mods folder
- Download size: 37 KB
- Download link checked 20 Aug 2026 — working
These come from our own check of the pack file, not from the source page.