Importing a world
Already have a save you love? Instead of starting blank, you can import a world you already have and Lanzinha turns it into a hosted server — your terrain, builds, and progress come along.
- What you can import and the supported file formats
- How the upload works (and why it's safe)
- The size limit and where to find the full Minecraft guide
What you can import
Today, importing is for Minecraft worlds — a single-player save or a server world folder. For the full step-by-step (preparing your files, what transfers, troubleshooting), see the dedicated guide:
➡️ Bring your own Minecraft world
This page is the short overview; the Minecraft guide has everything you need to actually do it.
Supported formats
Lanzinha accepts a compressed archive in any of these formats:
| Format | Notes |
|---|---|
.zip | The easiest from a single-player save |
.tar.gz (.tgz) | Common for server worlds |
.tar.zst | Including the archives Lanzinha itself produces when you export a world |
So you can export a world from one account and import it into another — the formats line up.
How the upload works
Importing is a safe two-phase flow:
- Init — you name the world and pick the version; Lanzinha hands your browser a short-lived, single-purpose upload link.
- Upload — your browser sends the archive straight to storage, with a live progress percentage. Keep the tab open until it finishes.
- Finalize — Lanzinha unpacks and converts the archive into its canonical server layout and sets it as the world's current snapshot.
Because the upload link is short-lived and tied to that one world, you never hand over broad access to your files, and one account can never finalize an import into another's world.
The upload archive can be up to 1 GiB. Larger files are rejected — prune far-flung chunks or remove backups from the folder before zipping. The Minecraft guide covers how to shrink an oversized save.
After importing
Your imported world behaves like any other:
- Open rooms against it; per-room settings are chosen each time.
- Every stop saves a fresh snapshot so progress carries over.
- You can give it a custom address, export it, or delete it.
→ Related: Bring your own Minecraft world · Creating a blank world · Exporting a world