![\"biomes\"](\"https:\/\/raw.githubusercontent.com\/caeruleusDraconis\/world-preview\/1.20\/img\/open.png\")
<\/p>\n# World Preview<\/p>\n
*World Preview* is a mod for visualizing Minecraft world seeds before they are generated.<\/p>\n
## Installation<\/p>\n
Just download the latest *World Preview* JAR file for your ***exact*** Minecraft version.
\nAdditionally, ***always*** ensure that you are using the correct version for your modloader (Fabric\/Forge).
\nThen save the downloaded jar to the `mods` folder of your Minecraft instance.<\/p>\n
Finally, if you are on Fabric you also need to download the
\nFabric API.<\/p>\n
## Usage<\/p>\n
*World Preview* adds a new `Preview` tab to the Singleplayer menu.<\/p>\n
<\/p>\n
Upon opening that tab, a random seed is selected and a map of biomes is generated:<\/p>\n
![\"biomes\"](\"https:\/\/raw.githubusercontent.com\/caeruleusDraconis\/world-preview\/1.20\/img\/biomes.png\")
<\/p>\n
By default, the overworld dimension will be generated, structures will not be shown and no heightmap will be generated.
\nThis can be changed in the Settings (top-left button in the `Preview` tab).<\/p>\n
When structure sampling is enabled, the visibility of individual types of structures on the preview can be toggled:<\/p>\n
![\"structures\"](\"https:\/\/raw.githubusercontent.com\/caeruleusDraconis\/world-preview\/1.20\/img\/structures.png\")
<\/p>\n
When height sampling is enabled, the preview can be toggled between the biome map and a colorized heightmap:<\/p>\n
![\"heightmap\"](\"https:\/\/raw.githubusercontent.com\/caeruleusDraconis\/world-preview\/1.20\/img\/heightmap.png\")
<\/p>\n
When y-layer intersection sampling is enabled, the preview can also show the blocks on the current y-layer.
\nAdditionally, the y-layer one step below is also shown in a lighter color:<\/p>\n
![\"heightmap\"](\"https:\/\/raw.githubusercontent.com\/caeruleusDraconis\/world-preview\/1.20\/img\/y-int.png\")
<\/p>\n
Since version 1.1.0, there is also experimental support for opening the preview in-game for a single-player worlds:<\/p>\n
![\"ingame\"](\"https:\/\/raw.githubusercontent.com\/caeruleusDraconis\/world-preview\/1.20\/img\/ingame.png\")
<\/p>\n
##### Moving on the preview<\/p>\n
Clicking and dragging on the map-part of the preview tab will move along the x and z axis.
\nThis will cause the following load sequence:
\n– Any biomes that are not yet sampled on the current y-level
\n– Structures (if enabled)
\n– Height map (if enabled)
\n– Adjacent y-layers (if enabled)<\/p>\n
Scrolling does **not** zoom into the map (there is a separate setting in the configuration menu for controlling the zoom level), but instead travels along the y-axis.
\nThis allows cave biomes to be seen as well. Please note that non-cave biomes span the entire world height beyond that.<\/p>\n
##### Other features<\/p>\n
– Works with mods! Tested with:
\n – Terralith
\n – Biomes O’ Plenty
\n– Persistent seed storage
\n– Highlighting specific biomes
\n– Highly configurable and extendable<\/p>\n
## Supported version<\/p>\n
This table shows the current support status for the Minecraft version.<\/p>\n
| Minecraft Version | Status |
\n|——————-|———–|
\n| `1.20.x` | Supported |<\/p>\n
## FAQ<\/p>\n
**Q:** *Will Minecraft versions before 1.20 be supported?*<\/p>\n
**A:** No.<\/p>\n
—<\/p>\n
**Q:** *Will Multiplayer be supported?*<\/p>\n
**A:** No.<\/p>\n
—<\/p>\n
**Q:** *Scrolling does not zoom the preview!*<\/p>\n
**A:** Scrolling moves the y-level up and down. To change the zoom level, go to `Settings (top left wrench) -> Resolution` and change the visual size of a chunk.<\/p>\n
—<\/p>\n
**Q:** *The preview is completely white \/ black for the y-intersections view.*<\/p>\n
**A:** This is likely because the starting y-layer for the preview is the build limit. Try scrolling down to a lower y-layer and something should show up.<\/p>\n
—<\/p>\n
**Q:** *My CPU is at 100%!*<\/p>\n
**A:** You can limit the number of used cores in `Settings (top left wrench) -> General`. By default, *World Preview* tries to compute the biome preview \/ structures \/ heightmap as quickly as possible. These calculations require a lot of CPU power.<\/p>\n
## Mod incompatibilities<\/p>\n
This mod should be compatible with most mods (including those adding new biomes and dimensions).<\/p>\n
### TerraFirmaCraft (TFC)<\/p>\n
World Preview **is** compatible with TFC, however, there is a known issue:<\/p>\n
The Y intersections view will always be a white screen for all Y levels with TFC, because the `TFCChunkGenerator` has a dummy implementation for the `getBaseColumn` method.<\/p>\n
To clarify: This doesn’t mean that TFC is broken \/ does something wrong (it clearly works on its own and does its job).
\nIt just means that TFC does not provide the specific information World Preview needs in this case.<\/p>\n
## Adding support for new biomes and structures<\/p>\n
New biomes, structures, and more can be registered via the Minecraft datapack mechanism. See the World Preview dataformat docs for more information.<\/p>\n","protected":false},"excerpt":{"rendered":"
Allows you to preview a map \/ seed in the new world screen<\/p>\n","protected":false},"featured_media":171445,"template":"","meta":{"_minecraft_slug":"world-preview","_minecraft_project_id":"WtfpyicL","_minecraft_author":"caeruleusDraconis","_minecraft_license":"Apache-2.0","_minecraft_downloads":1721089,"_minecraft_follows":517,"_minecraft_client_side":"required","_minecraft_server_side":"unsupported","_minecraft_storage_type":"zip","_minecraft_archive_name":"world-preview.zip","_minecraft_size_bytes":20949040,"_minecraft_version_count":70,"_minecraft_updated_at":"2026-05-16T11:04:31.931008Z","_minecraft_date_created":"2023-07-22T19:45:39.455218Z","_minecraft_date_modified":"2024-09-05T16:06:04.029219Z","_minecraft_project_url":"https:\/\/modrinth.com\/mod\/world-preview","_minecraft_icon_attachment_id":171445,"_minecraft_imported_at":"2026-06-09T21:27:07+00:00","_minecraft_import_hash":"69cc32a0e38d25a26644d132afb3f4ff","_minecraft_versions":"","_minecraft_links":"","_minecraft_gallery":"","_minecraft_api_metadata":""},"mod_category":[97,104,98,92,159],"mod_loader":[99,106,100],"minecraft_version":[59,36,60,93,94,101,102,62],"class_list":["post-171444","mod","type-mod","status-publish","has-post-thumbnail","hentry","mod_category-fabric","mod_category-forge","mod_category-quilt","mod_category-utility","mod_category-worldgen","mod_loader-fabric","mod_loader-forge","mod_loader-quilt","minecraft_version-1-20","minecraft_version-1-20-1","minecraft_version-1-20-2","minecraft_version-1-20-3","minecraft_version-1-20-4","minecraft_version-1-20-5","minecraft_version-1-20-6","minecraft_version-1-21"],"yoast_head":"\n