Archive World Downloader

What it does

• Save worlds as you explore. Play as you normally would and the download follows where you go.
• Works on a multiplayer server, not in your own singleplayer or LAN world.
• Open the containers you want to keep. One you walked past but never opened is saved empty.
• Resume an interrupted download. Pick it up later and keep adding to the same world.
• Choose what gets saved. Turn entities, containers, and player data on or off before you start.
• Download from a ReplayMod or Flashback replay as well as from a live server.
• Runs on Fabric, Forge, NeoForge, and Quilt, on these Minecraft versions.
• Everything comes from your own client, so nothing runs on the server.
• Save a shareable backup. Zip a finished download into one file you can send to a friend. That zip carries your username and your inventory, so read what a shared download reveals before you send one.

Get started

Install the mod, then save your first world from a server.

InstallInstall from inside a launcher (Prism Launcher, the Modrinth App, or the CurseForge App), or by hand on Fabric, Forge, NeoForge, or Quilt.

Your first downloadSave a world from a server and open your copy in singleplayer. About five minutes.

Guides

Something specific to do while a download runs, or afterwards.

Something looks wrongStart from the chip, message, or outline you saw and find the page that covers it.

Check what you actually savedSpot the containers you have not opened and the chunks missing their entities, before you leave.

Resume an interrupted downloadContinue a download that a disconnect or crash cut short, adding to the same world.

When a download failsWhat a save failure, an empty download, a Partial chip, and a crash each mean, and what to do.

Restore a download you opened in singleplayerReplace a folder you opened in singleplayer with its clean backup.

Keep the wrong things out of a downloadThree habits that keep a download clean, from one download per world to dismounting before a portal.

Download from a replaySave a world from a ReplayMod or Flashback recording, with no server to join.

Settings, screens, and commands

What every setting, screen, command, and keybind does.

Supported versionsWhich Minecraft versions and loaders have a build, and what differs between them.

Interface settingsThe HUD, the container outline, the map chunk overlay, and notifications.

World settingsWhat fills the space between downloaded chunks, the game rules, and how the copy opens.

Download settingsWhat the download includes, your player data, how it is written to disk, and the advanced options.

The downloads screenWhat every button and chip does, and what each blocked action means.

The download HUDThe dot, the timer, the three counts, the peek key, and the bar the save draws.

Commands and keybindsEvery /wdl command, the three keybinds, and the routes to the settings screen.

The wdl/ folderThe five files the mod keeps inside a downloaded world, and what deleting them costs.

Concepts

Why a download contains what it does.

What gets downloadedWhat a copy contains, why some things are missing, and what sharing one reveals about you.

When a download can hold the wrong thingFour limits on how far a downloaded world can be trusted, one of them on any server running inventory plugins.

Chests carried by Minecarts, Boats, and animalsHow a container that moves is saved, and where a Minecart you opened ends up in the copy.

Why machines and redstone load stoppedWhy a clock loads stopped, and why one block update starts it again.

How filled Maps are savedWhy a Map shows its picture rather than blank, why it is locked, and why its number changes.

How coverage is measuredHow the map overlay decides a chunk's entities were saved, without the server telling it.

How other mods affect a downloadWhich of the mods you have installed change what a download holds, and which change nothing.

Help make it better

The mod and this site are both open source. See Contributing to build the mod, report an issue, or fix a page. To translate the mod into your language, start with Translation style.