Frequently Asked Questions

MCWorldTools is a collection of browser-based tools for Minecraft Java Edition. It includes world file editors, command generators, visual editors for skins, signs, banners, and shields, a recipe viewer, an enchantment builder, a loot table builder, and more. Everything runs in your browser — no downloads needed.

Mostly not: the tools are built for Java Edition, and their commands, IDs and file formats follow Java. A few also help Bedrock players: the Skin Editor (the skin PNG imports into Bedrock on devices that allow custom skins); the Server Status Checker (it checks Bedrock servers too); the Nether Portal Calculator (the 1:8 coordinate math is the same on Bedrock). The file editors cannot open Bedrock worlds, and Bedrock player data lives in the world database rather than a .dat file.

Yes. All file processing happens locally in your browser. Your Minecraft files are never uploaded to a server or stored remotely. You are always in control of what gets modified and downloaded.

Open the Level.dat Editor, upload your level.dat file, and make changes using the visual editor. You can modify world name, cheats, difficulty, game rules, time, weather, spawn point, and world border on worlds up to 1.21.8. From 1.21.9 Minecraft began moving these out of level.dat or into a new form, and on 26.1+ worlds the editor can't change game rules, difficulty, time, weather, spawn or border: it shows which settings are read-only and the in-game command to use instead. When you're done, download the modified file and replace the original in your world folder. Make sure Minecraft is fully closed before swapping the file.

In singleplayer worlds, the player's data is stored inside level.dat (from 26.1, in players/data/UUID.dat instead). On servers, each player has a separate file, playerdata/UUID.dat (players/data/UUID.dat from 26.1). The Single Player Editor reads the player stored in level.dat (worlds before 26.1), while the Server Player Editor reads individual player .dat files. Both let you edit inventory, health, XP, position, and more.

This usually means Minecraft was still running when you replaced the file, so it overwrote your edits on save. Always close Minecraft (or stop the server) completely before replacing edited files. Other causes include editing the wrong file or mismatched UUIDs.

The Command Generator lets you build Minecraft commands through an interactive form. Select a command type (/give, /summon, /effect, /enchant, /attribute, /playsound, /gamerule, etc.), fill in the parameters, and copy the finished command. All item, entity, and effect lists update based on your selected Minecraft version.

The Execute Command Builder helps you create complex /execute command chains by stacking subcommands visually. You can add as, at, positioned, rotated, facing, align, anchored, in, if, unless and store subcommands (plus on and summon, which need 1.19.4 or later), reorder them with the move up / move down buttons, add the command to run, and copy the final command.

Pick an item, then add any combination of enchantments at any level. The builder shows which enchantments conflict with each other and which ones apply to your chosen item. You can also add a custom name and lore text. Copy the resulting /give command when you're done.

Design custom Minecraft signs with per-line text colors, bold/italic/underline formatting, and glow effects. You can also set click events that run a command when a player clicks the sign. The live preview shows exactly how your sign will look in-game.

The Tellraw Editor lets you build /tellraw messages visually. Add text components with colors, formatting, click events (run/suggest commands, open URLs), and hover text. You can target specific players with selectors and preview the output before copying.

The Loot Table Builder lets you create Minecraft loot tables for datapacks. You can define pools with weighted entries, add conditions (biome, weather, random chance, killed by player, etc.) and functions (set count, enchant, set name, etc.). It includes a built-in simulator that runs the loot table to show what drops you'd get.

Use the Skin Stealer. Type any Java Edition player's username and it shows their skin in 3D with a Download Skin button for the skin PNG. If the player never set a custom skin, the tool tells you they use a default skin, so there is nothing to download.

Use the MOTD Generator. Type your two lines with colors and formatting, check the live server-list preview, and copy the ready-to-paste server.properties line. It can also output hex colors for Paper/Spigot or as JSON, grab an existing server's MOTD by address, and make a 64x64 server icon.

Divide your Overworld X and Z by 8 to get the matching Nether coordinates, and multiply by 8 to go back; Y stays the same. The Nether Portal Calculator converts in both directions and checks whether two portals will link to each other.

Use the Server.properties Generator. It lists every setting with what it does and the default your version's own server writes. Import your current file or start from the defaults, change what you need, then copy or download the file and put it next to the server .jar while the server is stopped.

Enter the address in the Server Status Checker. It shows whether the server is up, its players, version, MOTD, latency and icon, for Java and Bedrock servers. With a free account you can also watch a server, see its uptime history and get a status badge for your own site.

Add your item and books to the Anvil Calculator and it works out the order with the lowest total XP cost under Java Edition's anvil rules, step by step, and warns you if a step would be Too Expensive.

Use the Jukebox Playlist Builder. Playlists are new in the Java 26.4 snapshots: there, a chest of music discs on top of a jukebox plays them in slot order and loops. Plan the order, see how long the loop takes and copy the /give command for the filled chest. It also lists every music disc's length and where to find it.

A gallery of banners, shields and skins made by other players. Sign in to publish your own from the Banner, Shield or Skin Editor, or from My Library — every design is reviewed before it appears. Signed-in visitors can like a design or save a copy to their own library.

Use the UUID Lookup tool. Enter a Java Edition username and it will return the player's UUID and current skin. You can also download the skin as a PNG file. This uses the public Mojang API.

Yes. The file editors work with server world files — level.dat for world settings and playerdata/UUID.dat for individual players (players/data/UUID.dat from 26.1). Command tools generate commands that work in server consoles and command blocks. The Server.properties Generator and MOTD Generator set up the server itself, and the Server Status Checker shows whether it's online. Just make sure to stop the server before replacing edited files.

The Banner Editor lets you design Minecraft banners by layering patterns and colors. You can preview the result in real time, get the /give command for the finished banner, and see step-by-step loom instructions for crafting it in survival mode.

The Shield Editor works like the Banner Editor but for shields. Design your shield with banner patterns and colors, preview it, and get the /give command or crafting steps to recreate it in-game.

The Potion Editor lets you create custom potions, splash potions, lingering potions, and tipped arrows. You can add any combination of effects with custom durations and amplifiers, set a custom color and name, and copy the /give command.

The Firework Editor lets you design custom firework rockets with up to 7 explosions. For each explosion you can choose a shape (small ball, large ball, star, creeper, burst), select multiple colors and fade colors, and toggle trail and twinkle effects. Set the flight duration and copy the /give command to use in-game.

The Armor Editor lets you design custom armor sets with dyed leather colors, armor trims (patterns and materials), enchantments, and custom names. You can configure each armor piece individually and copy the /give commands.

The Book Editor lets you create written books with multiple pages, formatted text, colors, click events (run commands, open URLs), and hover tooltips. You can preview pages as they would appear in-game and copy the /give command for the finished book.

The Armor Stand Editor lets you pose and customize armor stands with interactive 3D controls. You can rotate each body part (head, body, arms, legs), equip items in all six slots (armor and hands), set properties like invisibility, glowing, small size, and no gravity, add a custom name, and copy the /summon command. A live 3D preview updates as you make changes.

The Mob Builder lets you create custom mobs with equipment, attributes, and properties. Choose from zombies, skeletons, piglins, and more. Equip armor and weapons, adjust health, speed, and damage, set baby mode, invisibility, or a custom name, and preview the result in 3D. Copy the /summon command to spawn the mob in-game, or generate a spawn egg to place it from your inventory.

The Skin Editor lets you create and edit Minecraft skins with a 2D pixel editor and a live 3D preview. You can paint directly on the model, choose between slim and classic arm models, import existing skins, and download the result as a 64x64 PNG ready to upload to your Minecraft account. It also supports layers, shading, importing a single part from another skin, and publishing your skin to Community Designs.

The Recipe Viewer lets you look up crafting recipes for any Minecraft item. It shows crafting table, smelting, stonecutting, and smithing recipes. You can search by item name, filter by recipe type, and click through ingredients to see how they are made. It supports both vanilla and modded recipes.

The Minecraft ID List lets you browse all items, blocks, entities, enchantments, and effects in Minecraft. You can search by name, filter by type, copy identifiers, and view detailed information including recipes, tags, and properties. It supports all 32 versions from 1.17 to the latest, 26.3, plus modded content.

Yes — we currently support Mekanism, Farmer's Delight and Industrial Foregoing, with more mods coming soon. You can browse modded item IDs, recipes, blocks, entities, enchantments, and effects. The file editors also open modded world files and leave the mod data untouched.

We maintain full game data for 32 Minecraft Java versions: 1.17, 1.17.1, 1.18, 1.18.1, 1.18.2, 1.19, 1.19.1, 1.19.2, 1.19.3, 1.19.4, 1.20, 1.20.1, 1.20.2, 1.20.3, 1.20.4, 1.20.5, 1.20.6, 1.21, 1.21.1, 1.21.2, 1.21.3, 1.21.4, 1.21.5, 1.21.6, 1.21.7, 1.21.8, 1.21.9, 1.21.10, 1.21.11, 26.1, 26.2, and 26.3. Each version has its own validated item, block, entity, enchantment, effect, biome, and recipe data. Individual mod data spans multiple versions depending on the mod. The level.dat editor fully supports worlds up to 1.21.8; from 1.21.9 Minecraft began moving world settings out of level.dat or into a new form (on 26.1+ worlds the editor can't change game rules, difficulty, time, weather, spawn or border), and it shows which ones it can't change yet.

No. MCWorldTools never modifies your files directly. You upload a copy, make edits in the browser, and download the result. You then manually place the file in your Minecraft save folder. Always keep backups before making changes.

Your world files are never uploaded — all editing happens in your browser. Opening a player save sends its player UUID so we can show the player's name and skin, and UUID lookups are cached. We use Google Analytics (with your consent) for basic usage statistics, show non-personalized Google AdSense ads, and store contact form submissions. If you create an account, we also store your email, username and anything you save, publish or watch. The UUID Lookup tool queries the public Mojang API. See our Privacy Policy for full details.