Minecraft Map Editor 1.12.2
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NBTExplorer is an open-source NBT editor for all common sources of NBT data. It’s mainly intended for editing Minecraft game data. You should be familiar with this tool if you handle Minecraft maps. Here you can open the level.dat file and change some parameters. I introduced my 65 year-old dad to Minecraft a few years ago. I'm back visiting home for a few weeks and he said he wanted to 'show me something.' He then brings this posterboard with a pieced-together map he created encompassing the world he was playing/exploring. Minecraft: Education Edition. Minecraft Earth. Community; Merch; Support. A string representation of the to be changed fields is printed in a text field below the editor. When entering a field string into this field directly, press Enter to parse it into the editor. For more information about the fields have a look at the chunk format description on Minecraft Wiki.

Chunky

About
Getting Started
User Interface
Documentation
Community
Resources

Chunky is a Minecraft rendering tool that uses Path Tracing to create realistic images of your Minecraft worlds. Check out the galleryfor examples of what Chunky can do!

Downloads

New users are recommended to look at the Installation Instructions andthe Getting Started Guide, or for a full guide check Your First Render!

For help and development updates, join our Discord:

Frequently Asked Questions

Q: Why is there noise/grain/random bright dots in the render? This is not a bug, but an unfortunate effect of the rendering algorithm used in Chunky. Torches and other small light sources cause a very random illumination and it takes a long time to render such light nicely. For more information please read the Path Tracing article. You can disable emitters under the Lighting tab in the Render Controls dialog to remove most of the random bright dots. Note that rendering for a longer time will eventually remove the noise, though it may take a very long time.
Note - There are techniques and plugins which can help reduce noise. For more information please visit jackjt8's Guide to Chunky - Denoising.
Q: How long does it take to render an image? There is no exact answer to this question. The main thing that affects render time is your CPU, the size of the image, and the lighting conditions in the scene you are rendering. It can take anywhere from an hour to a couple of days to render a nice image. You can reduce the size of the canvas, disable emitters, enable ESS, or use a denoising technique to speed up the convergence rate. See the Path Tracing article or jackjt8's Guide to Chunky - Denoising for more details.
Q: Is GPU rendering supported? GPU rendering support for Chunky 2.4.0-77 or later is currently in development in the form of an OpenCL 1.2 renderer plugin. This renderer is still under development and many features of the CPU renderer are not yet supported. For more information and WIP builds please visit the plugins GitHub.
Q: What about the SpigotMC Plugin?Chunky (SpigotMC) is an unrelated project which has an unfortunate name collision. Said plugin is used to quickly pre-generate server chunks.

Minecraft Map Editor 1.12.2

Question still not answered? Check the FAQ page.

License & Copyright

Chunky is free software and the source code is made available under the GNUGeneral Public License, version 3. The source code is managed onGitHub.

Chunky is Copyright (c) 2010-2021, Jesper Öqvist and Chunky Contributors;these are also listed in the relevant source files and on the Credits page.Copyright notices for third-party libraries used in Chunky are listed in theREADME file.

Releases

JavaScript is required for this application!

Seed:

Version:

Dimension:

Hint: You can also drag and drop level.dat here!

⚠ Zoom in to show all selected features

Filter biomes

Limitations

Some features are not 100% accurate, i.e., locations can be wrong or missing. These include:

Dungeons
End Cities on Bedrock Edition
World Spawn Positions

Various other structures such as villages and igloos can sometimes fail to generate in-game as well.

Let me know in the comments if you find any wrong or missing locations. Please make sure that:

Minecraft Map Editors

you entered the seed and coordinates correctly
you selected the correct edition and version (the one used to generate the region you look at)
you don't use any mods that affect the world generation
(for slime chunks) you waited long enough, since they have a very low spawn rate even in slime chunks

Requirements

Seed

For technical reasons, you need to know the seed of your world to use Seed Map, unless, of course, you want to find a seed for a new world. If you're playing SSP, the app is able to fetch the seed from your savegame. Alternatively, you can use the /seed command ingame. In SMP, you can use the same command if you have sufficient rights. Otherwise, however, you're dependent on the server owner, who started the world and has access to the savegame and config files.

Browser

This app uses some relatively new web technologies. As a result, some features may be disabled for older browsers. I recommend using the latest version of a major browser such as Chrome, Firefox, Edge or Safari.

Usage

Seed Selection

The first thing you should do is select a seed and version. You can either type it in manually, or you can load it from your savegame. The latter can be done by clicking on 'Load from Save...' and selecting your level.dat, or by drag&dropping the level.dat file into your browser window. Level.dat is a small file located in the folder of every Minecraft savegame. You can find the savegames in the saves folder of your Minecraft installation. On Windows you can use %appdata%.minecraftsaves to get to that folder.

You should also know that a seed is always a number (up to around 20 digits). If you type in anything else (like letters), it will be converted to a number. The app does this the same way Minecraft does, so it's safe to use letters (and other characters) as well.

Dimension and Feature Selection

Below the seed and version, you can also choose the Minecraft dimension that you want to view (Overworld, Nether or End). This, and the version you use, will affect which features can be enabled. To toggle certain features, click on the icons in the features box just above the map.

You can also expand and collapse features box by clicking the arrow on the right side of the box to show the full names of the features, as well as some more options.

Note that some features will only show if you zoomed in enough. This is to keep the app fast and to not flood it with icons. The app will show a warning and all affected features will be highlighted once that happens.

Navigation

Once you entered all the options you can start using the map. To scroll, use your arrow keys while your mouse cursor points at the map, or move your mouse while holding down the left mouse button. You can use the slider below the map or your mousewheel for zooming. The lower inputs allow you to go to a specific point (e.g., your base) of the map and set a marker there. You can always remove and add the marker by double clicking on the map. The 'Save Map' button allows you to save the currently shown map as png image file.

Selecting structure locations