Minecraft World Info & Backup (Java)
Drop a Minecraft world folder to see its seed, version, game mode, spawn point, days played and size, then download a full backup as a .zip in one click. Works for Java Edition worlds from any version.
Runs on your device · nothing uploaded
This tool is code that runs inside your browser. Your files, text and pictures are read here and never sent to a server, so it even works offline once loaded. Signed in? Only what you save to your account (My Kit, wardrobe) or publish is uploaded.
Drop a world folder, your whole saves folder, or level.dat
Worlds are in .minecraft/saves (Windows: Win + R → %appdata%\.minecraft\saves). 🔒 Everything stays on your device.
EXAMPLEThis is a made-up world. Drop your own world folder to see its seed, size and make a backup.
Example World
| World name | Example World |
|---|---|
| Seed | -4172144997902289642 |
| Game mode | Survival |
| Difficulty | Normal |
| Cheats | Off |
| Spawn point | 64, 72, -128 |
| Days played (in-game) | 213 |
Drop the whole world folder (not just level.dat) to see its size and make a backup.
.
What you'll see
| Detail | Where it comes from |
|---|---|
| Seed | level.dat (WorldGenSettings → seed, or RandomSeed before 1.16) |
| Version | level.dat (Version → Name) |
| Game mode, difficulty, hardcore, cheats | level.dat |
| Days played | Day time ÷ 24,000 ticks |
| Region files per dimension | region, DIM-1 (Nether) and DIM1 (End) folders |
| Players saved | playerdata folder |
| Data packs | datapacks folder |
How to use it
- Close the world in Minecraft first.
- Open .minecraft/saves (Windows: Win + R, then %appdata%\.minecraft\saves).
- Drag one world folder (or the whole saves folder) onto the box above.
- Read the world's details. Press Copy seed to share the seed with friends.
- Press Download backup to save a .zip copy of the whole world.
How it works
Every Java world has a level.dat file in Minecraft's NBT format. The tool unpacks it in your browser and reads the seed (WorldGenSettings, or RandomSeed in older versions), version, game rules and spawn. The backup bundles every file of the world into a standard ZIP, without uploading anything.
Questions
How do I find the seed of my Minecraft world?
Drop the world folder (or its level.dat) on this page and the seed appears at once. In game you can also type /seed if cheats are on.
Is the backup complete?
Yes: it includes every file in the world folder. Close the world in Minecraft first so nothing is being written while you back up.
How big a world can I back up?
Up to 4 GB in one ZIP. Bigger worlds need a desktop zip program.
Does it work for Bedrock worlds?
Not yet. Bedrock stores worlds in a different format (LevelDB). This tool reads Java Edition worlds.
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By PickaxeKit Editorial Team. Updated 2026-11-09.