Ultralight
1.21.6-1.21.11 | Only what you need for performance. Free Minecraft Java modpack for 26.2.
⬇ Download on Modrinth
Performance Comparison
| Metric | Vanilla | Ultralight | Improvement |
|---|---|---|---|
| Min Frametime | 6 ms | 4 ms | ~1.5× better |
| Max Frametime | 107 ms | 54 ms | ~1.98× better |
| Avg FPS | 134 | 277 | ~2.07× higher |
Tested under simulated gameplay at 16 render distance.
Ultralight is best used on client.
If you're looking to improve your server's performance, try out Lilypad!
Want to play Minecraft with a new little spin? Try Wildflower!
Updating the Modpack & Tags
Before a new Ultralight update gets uploaded, it undergoes simulated gameplay testing to assess performance under normal conditions. If the update meets our internal performance targets, it will be released with an “A” in the version name. If it fails to meet those targets, it will be released with an “F” in the version name.
Tags
- A — Stable and user-ready; no major issues.
- B — Acceptable but below optimal performance targets (FPS and/or frametime slightly off).
- F — Performance issues; FPS and/or frametime significantly below target.
OS Compatibility
| OS | Compatible |
|---|---|
| Windows | ✅ |
| MacOS (ARM) | ✅ |
Tested on Apple M1. Measurements taken on Windows.
Socials
We have a Discord server!
- Downloads as Ultralight 26.2 26.2_2.2_A.mrpack
- Download size: 67 KB
- Download link checked 29 Aug 2026 — working
These come from our own check of the pack file, not from the source page.