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World Preview (Unofficial Port)

Allows you to preview a map / seed in the new world screen. Community fork ported to Minecraft 1.20.1, 1.21.1, 1.21.11, 26.1.2, 26.2 and 26.3 with new features and a redesigned UI.

Автор: seisou1,8 тыс.4обновлён 17 окт. 2026 г.
Скачать 1.5.5Все версии (43)
УтилитыГенерация мира

Описание

An unofficial community port of World Preview by Caeruleus Draconis & Taiterio, carried forward to Minecraft 1.20.1, 1.21.1, 1.21.11, 26.1.2, 26.2 and 26.3 on Fabric and NeoForge, with Forge support for 1.20.1.

It draws a map of a world seed before the world is generated — biomes, structures, heightmap and Y-layer intersections — so you can look at a world before you commit to it.

All credit for the mod itself belongs to its original authors. Licensed under Apache-2.0.

Supported versions

MinecraftFabricNeoForge / Forge
1.20.1✅✅ (Forge)
1.21.1✅✅
1.21.11✅✅
26.1.2✅✅
26.2✅✅
26.3✅✅

Forge is available for 1.20.1 only; the other versions use NeoForge.

Which file do I need?

Pick the file that matches both your Minecraft version and your mod loader. File names look like world_preview-<mod version>-<minecraft version>-<loader>.jar, with the loader segment lowercase (fabric, neoforge) except on 1.20.1, where it is Fabric or Forge (world_preview-<mod version>-1.20.1-Fabric.jar, world_preview-<mod version>-1.20.1-Forge.jar).

The .dev and .sources variants are for developers and are not meant to be played.

On Fabric you also need Fabric API. NeoForge and Forge need nothing extra.

This mod is client-side and singleplayer-only. Install it on the client; a server does not need it, and the preview is not available on a server world.

What differs from the original

The list below records where this port departs from the original. Anything not listed here works the way it always did.

 Original (≤ MC 1.21)This port
Scroll wheelmoves along the Y axiszooms the map; Ctrl+scroll always zooms and Alt+scroll always moves along Y, and the bare wheel can be set back to moving along Y in Settings → General → Scroll wheel zooms map
Zoomset from the config menua 5-step ladder (16, 8, 4, 2 or 1 pixels per chunk; 4 by default), reachable from the mouse wheel, the settings screen and a scale-bar slider at the bottom-left of the map. The two most zoomed-out steps (2 and 1 pixels per chunk) resample the map, so they take a moment
Minecraft version1.20.x, 1.211.20.1, 1.21.1, 1.21.11, 26.1.2, 26.2, 26.3
Mod loaderFabric, Forge, QuiltFabric, NeoForge; Forge on 1.20.1
Settings screena single screensidebar with separate pages, plus a Reset to defaults button
Starting Y layerthe build limitabout one third of the world height (≈ Y 64 in the Overworld)

The in-game preview, persistent seed storage, biome highlighting, the preview cache (with optional compression), the thread-count setting and the datapack mechanism for registering biomes, structures and colour maps are all unchanged from the original.

Added in this port

Most of the following are opt-in: each has its own button or setting, and none of them change the preview until you turn them on; the exceptions — drag preloading, which is on by default, and the automatic backup and migration of the config files — only affect sampling work and files, never what the preview shows.

Seed search scans random seeds against a set of criteria: up to four biomes (any of them counts), a structure, a minimum biome area share, a maximum distance to the nearest matching biome and a separate distance limit for the structure. Results are ranked, and a search runs in the background, so it keeps going while you are on another screen. Only random-spread structures can be searched for; concentric-ring ones such as strongholds are not supported yet.

Seed history, favourites and comparison — matching searches are stored, and a row applies its seed on click, adds it to favourites on Shift+right-click and deletes it on right-click. A comparison screen puts the current seed next to up to seven others and reports biome diversity, water share, the dominant biome and a spawn score.

World analysis — pick a region and get biome distribution, height range, mean height, slope statistics and flat-area ratio, plus a terrain profile, a height chart, a biome-share breakdown and a spawn quality score with reasons. The tables export as CSV and JSON.

Terrain map export — write the current seed's terrain as a high-resolution PNG, with a configurable radius and blocks-per-pixel, nine terrain classes and an optional contour overlay. It can also walk every dimension of the seed in one batch.

Waypoints — named, coloured pins stored per seed and dimension. Switch on Waypoints and left-click the map to place one; left-click a pin again to rename, recolour or delete it.

Measure tool — two clicks report the distance and the axis deltas; right-click clears it.

Spawn point override — place a spawn pin during world creation and those coordinates become the world's spawn point, without cheats.

Hillshade and contour lines — simulated sun illumination on the heightmap view (azimuth, altitude, ambient, exaggeration) and elevation contour lines at a configurable interval.

Noise parameter views — temperature, humidity, continentalness, erosion, depth, weirdness and peaks & valleys, each with its own colour gradient.

Smaller things — a minimap, live statistics, coordinates, per-biome block counts, preloading of the area around the viewport, automatic backup and migration of the config files and views for other dimensions, including ones with non-standard height limits.

How to use it

World Preview adds a Preview tab to the Singleplayer menu. Opening it samples a random seed and draws a biome map. By default the Overworld is previewed, structures and the heightmap are off, and no noise samples are stored — all of that is configured in Settings (the wrench button, top-right over the map).

Moving on the map — drag to travel along X and Z. Dragging queues work in this order: biomes not yet sampled on the current Y layer → structures (if enabled) → heightmap (if enabled) → intersections (if enabled) → adjacent Y layers (if enabled). Scroll to zoom. Moving along Y lets you see cave biomes; non-cave biomes span the whole world height, so they look the same on every layer. Arrow keys pan, Home recentres on (0, 0). The scale bar at the bottom-left shows the current scale and doubles as a zoom slider.

Render modes, switchable from the toolbar:

ModeShows
Biomesbiome colours (default)
Heightmapcolourised elevation, with selectable colour maps
Y-intersectionsblocks on the current Y layer, with the layer below drawn in a lighter shade
Noise parameterstemperature, humidity, continentalness, erosion, depth, weirdness and peaks & valleys

Structures are not a view of their own: once structure sampling is on, individual structure types are toggled from the structures list.

Seeds opens the seed hub; Analysis opens the region analysis screen. For singleplayer worlds a button is also added to the pause menu, so you can open the preview without leaving the world.

FAQ

Q: Scrolling does not zoom the preview!

A: Scrolling zooms by default in this port, so if yours does not, check Settings → General → Scroll wheel zooms map; when that box is off, the wheel moves along the Y axis instead and you need Ctrl+scroll to zoom. Alt+scroll always moves along Y. A blank Y-intersections view is a different problem; see below.

Q: The Y-intersections view is completely white / black.

A: The preview starts at roughly one third of the world height (≈ Y 64 in the Overworld). If you still see nothing, scroll to a lower Y layer — or to a higher one, in a dimension whose terrain sits above its middle.

Q: My CPU is at 100%!

A: Lower the thread count in Settings → General (the setting is labelled Number of biome sampling threads), and turn off Enable drag preloading there as well. World Preview computes the biome preview, structures and heightmap as fast as it can, which is CPU-hungry by design. Lowering The amount of samples per chunk on the Resolution page reduces the work further, at the cost of a coarser preview.

Q: Where is the config file, and what else does the mod write to disk?

A: config/world_preview/config.json. Backups and migrations of older files happen automatically. Terrain exports land in config/world_preview/terrain_exports/ and analysis reports in config/world_preview/reports/.

Q: How do I add support for new biomes, structures or colour maps?

A: The same way as in the original mod: through the Minecraft datapack mechanism. The data format is unchanged by this port.

Q: Will other Minecraft versions be supported?

A: This port targets exactly the versions in the table above — there are no builds for anything in between (1.21.2–1.21.10) or older. For 1.20.x and 1.21 you can use the original mod, which covers those versions on Fabric, Forge and Quilt.

Q: Will multiplayer be supported?

A: No.

Mod compatibility

Modded chunk generators are detected at runtime and adapted.

ModWhat this port does
Terralithuses a chunk generator adapter
Biomes O' Plentypoints its biomes at the datapack colour mapping
Oh The Biomes You'll Gopoints its biomes at the datapack colour mapping
Nature's Spiritpoints its biomes at the datapack colour mapping
Astral Sorcerynotes that its custom dimensions may need datapack configuration
Awakennotes that its custom dimensions may need datapack configuration
TofuCraftnotes that its custom dimensions may need datapack configuration
Oh The Treesnotes that tree generation may vary
Wither Storm Modrecords the mod as present
TerraFirmaCraftswitches intersection sampling off — this entry is disabled by default

Mods that are not on this list are left alone: biomes, structures and colour maps they add are picked up through the datapack mechanism.

TerraFirmaCraft (TFC) — World Preview is compatible with TFC, with one known limitation: the Y-intersections view stays white on every Y layer, because the column data this view samples is not exposed by TFCChunkGenerator's getBaseColumn. That comes from the data TFC exposes, not from a bug in TFC.

Links

Credits

  • The original mod, its design and the large majority of its code are by Caeruleus Draconis & Taiterio. This port only exists because of their work.
  • Anything the port adds, and anything it breaks, is this port's own responsibility.
  • Licensed under Apache-2.0.

Screenshots are being redrawn for the current UI.

Галерея

biomesstructuresopeningame

Последние версии

Все версии →
release

World Preview (Unofficial Port) 1.5.5

1.5.5
17 окт. 2026 г.78Minecraft: 26.3neoforge
Скачать
Что нового
## 1.5.5 ### Fixes - Fixed the exported terrain map PNG showing red and blue swapped on Minecraft 1.21.11 and the 26.x versions, and the same swap on the export screen's legend swatches - Fixed the terrain map export failing with out-of-memory on extreme coverage radius and resolution combinations: such combinations are now rejected up front with an explanation on the export screen - Fixed the profile direction button on the analysis screen not switching on Minecraft 1.21.11 and the 26.x versions - Fixed mouse buttons acting as the wrong button on Minecraft 26.3: right-click actions such as copy coordinates and list context menus fired on left click, while left-click actions such as list selection, measure points, spawn pins and waypoints did not respond - Fixed the spawn point override: the pinned spawn only applies to the world being created, opening an existing world first no longer touches its spawn, and a failed apply is logged instead of silently counting as applied - Fixed resources leaking when the preview screen was closed while a settings reload was still running ### Improvements - While the map is dragged, the biome layer now samples one sample per chunk and the detail layers (structures, heightmap, intersections and the adjacent Y layers) wait for the drag to end; the coarsely filled area is re-sampled at full resolution in place on release. The behaviour is on by default and has no setting of its own yet - Closing the preview no longer rewrites the on-disk preview cache when nothing new was sampled since it was last saved, so a browse-only session skips the full save pass - Consecutive zoom steps — wheel ticks and slider drags — now share a single re-render inside a short window instead of paying one full re-render per step; the map level still applies immediately and the view is at most one window behind - Reworked the terrain map export screen layout: settings, status and the category legend now sit in outlined panels matching the seed search and analysis screens, the export/settings tab pair is gone, the layout no longer overflows small gui heights such as GUI scale 4, and the progress bar keeps showing its percentage and coloring failures red - A refused export start now reports the reason instead of doing nothing - A batch export no longer aborts the remaining dimensions when one dimension fails, and batch runs now show elapsed and remaining time like single-dimension exports - Reworked the analysis screen's biome share table: holding the middle mouse button autoscrolls it at a speed set by the cursor's distance from the press point (it keeps scrolling while the mouse holds still), the wheel scrolls three rows per step with a short glide, and a scrollbar on the right edge tracks the visible range, jumps under the cursor on press and drags 1:1; on layouts too small for a single table row the stacked-bar header collapses to the title, diversity line and biome bar. The same middle-press autoscroll and short wheel glide now cover the analysis overview panel, the settings pages, the biome and structure lists, the seed search lists and the terrain export history, whose scrollbar strips also jump under the cursor and drag 1:1; the export history keeps every entry - The analysis screen's terrain export and structure waypoint actions joined the report and back buttons in one footer row beneath the panels - Terrain map exports can overlay a coordinate grid (16 to 4096 blocks, opt-in per export) and write an optional grayscale heightmap PNG next to the terrain PNG; the export metadata JSON now also carries per-category pixel counts - The analysis screen gained an Export This Region action that opens the terrain export screen prefilled with the analyzed area - The in-game preview now remembers the last map position between sessions; an opt-in Open preview at player setting anchors the initial view on the player instead - The hover panel can show the sampled temperature, humidity, continentalness, erosion, depth, weirdness and peaks-valleys values behind an opt-in setting, measured distances show the surface height difference between both endpoints, and viewport PNG exports write a JSON sidecar with the seed, dimension, world identity and view center - The analysis screen's structure rows are clickable to add a waypoint, and a footer button drops every structure in the analyzed region into the waypoint list at once - Terrain map exports append to a history file and the export screen browses the full history; clicking a row copies the exported file's absolute path - Holding Ctrl while right-clicking a seed search result saves it to the saved-seed library, and the history view gained a button that clears all non-favorite entries - Right-clicking a waypoint pin on the preview map copies a /tp command with the waypoint's coordinates - Terrain map exports can color the map per biome (opt-in): every pixel takes the biome's preview color — the same colors the preview's biome view uses, including user overrides — instead of the nine terrain categories, and the export metadata JSON carries a per-biome legend mapping every used color to its biome id and name - Terrain map exports sample biomes at the Y layer the preview is scrolled to instead of a fixed Y 64, so the exported map matches the layer being viewed and the storage fast path applies to it; every dimension of a batch export samples at that same layer and the metadata JSON records it --- For the full changelog of every version, see the [CHANGELOG on GitHub](https://github.com/seisou123/World-Preview-Unofficial-Port-/blob/main/CHANGELOG.md).
release

World Preview (Unofficial Port) 1.5.5

1.5.5
17 окт. 2026 г.523Minecraft: 26.3fabric
Скачать
Что нового
## 1.5.5 ### Fixes - Fixed the exported terrain map PNG showing red and blue swapped on Minecraft 1.21.11 and the 26.x versions, and the same swap on the export screen's legend swatches - Fixed the terrain map export failing with out-of-memory on extreme coverage radius and resolution combinations: such combinations are now rejected up front with an explanation on the export screen - Fixed the profile direction button on the analysis screen not switching on Minecraft 1.21.11 and the 26.x versions - Fixed mouse buttons acting as the wrong button on Minecraft 26.3: right-click actions such as copy coordinates and list context menus fired on left click, while left-click actions such as list selection, measure points, spawn pins and waypoints did not respond - Fixed the spawn point override: the pinned spawn only applies to the world being created, opening an existing world first no longer touches its spawn, and a failed apply is logged instead of silently counting as applied - Fixed resources leaking when the preview screen was closed while a settings reload was still running ### Improvements - While the map is dragged, the biome layer now samples one sample per chunk and the detail layers (structures, heightmap, intersections and the adjacent Y layers) wait for the drag to end; the coarsely filled area is re-sampled at full resolution in place on release. The behaviour is on by default and has no setting of its own yet - Closing the preview no longer rewrites the on-disk preview cache when nothing new was sampled since it was last saved, so a browse-only session skips the full save pass - Consecutive zoom steps — wheel ticks and slider drags — now share a single re-render inside a short window instead of paying one full re-render per step; the map level still applies immediately and the view is at most one window behind - Reworked the terrain map export screen layout: settings, status and the category legend now sit in outlined panels matching the seed search and analysis screens, the export/settings tab pair is gone, the layout no longer overflows small gui heights such as GUI scale 4, and the progress bar keeps showing its percentage and coloring failures red - A refused export start now reports the reason instead of doing nothing - A batch export no longer aborts the remaining dimensions when one dimension fails, and batch runs now show elapsed and remaining time like single-dimension exports - Reworked the analysis screen's biome share table: holding the middle mouse button autoscrolls it at a speed set by the cursor's distance from the press point (it keeps scrolling while the mouse holds still), the wheel scrolls three rows per step with a short glide, and a scrollbar on the right edge tracks the visible range, jumps under the cursor on press and drags 1:1; on layouts too small for a single table row the stacked-bar header collapses to the title, diversity line and biome bar. The same middle-press autoscroll and short wheel glide now cover the analysis overview panel, the settings pages, the biome and structure lists, the seed search lists and the terrain export history, whose scrollbar strips also jump under the cursor and drag 1:1; the export history keeps every entry - The analysis screen's terrain export and structure waypoint actions joined the report and back buttons in one footer row beneath the panels - Terrain map exports can overlay a coordinate grid (16 to 4096 blocks, opt-in per export) and write an optional grayscale heightmap PNG next to the terrain PNG; the export metadata JSON now also carries per-category pixel counts - The analysis screen gained an Export This Region action that opens the terrain export screen prefilled with the analyzed area - The in-game preview now remembers the last map position between sessions; an opt-in Open preview at player setting anchors the initial view on the player instead - The hover panel can show the sampled temperature, humidity, continentalness, erosion, depth, weirdness and peaks-valleys values behind an opt-in setting, measured distances show the surface height difference between both endpoints, and viewport PNG exports write a JSON sidecar with the seed, dimension, world identity and view center - The analysis screen's structure rows are clickable to add a waypoint, and a footer button drops every structure in the analyzed region into the waypoint list at once - Terrain map exports append to a history file and the export screen browses the full history; clicking a row copies the exported file's absolute path - Holding Ctrl while right-clicking a seed search result saves it to the saved-seed library, and the history view gained a button that clears all non-favorite entries - Right-clicking a waypoint pin on the preview map copies a /tp command with the waypoint's coordinates - Terrain map exports can color the map per biome (opt-in): every pixel takes the biome's preview color — the same colors the preview's biome view uses, including user overrides — instead of the nine terrain categories, and the export metadata JSON carries a per-biome legend mapping every used color to its biome id and name - Terrain map exports sample biomes at the Y layer the preview is scrolled to instead of a fixed Y 64, so the exported map matches the layer being viewed and the storage fast path applies to it; every dimension of a batch export samples at that same layer and the metadata JSON records it --- For the full changelog of every version, see the [CHANGELOG on GitHub](https://github.com/seisou123/World-Preview-Unofficial-Port-/blob/main/CHANGELOG.md).
release

World Preview (Unofficial Port) 1.5.5

1.5.5
17 окт. 2026 г.10Minecraft: 26.2neoforge
Скачать
Что нового
## 1.5.5 ### Fixes - Fixed the exported terrain map PNG showing red and blue swapped on Minecraft 1.21.11 and the 26.x versions, and the same swap on the export screen's legend swatches - Fixed the terrain map export failing with out-of-memory on extreme coverage radius and resolution combinations: such combinations are now rejected up front with an explanation on the export screen - Fixed the profile direction button on the analysis screen not switching on Minecraft 1.21.11 and the 26.x versions - Fixed mouse buttons acting as the wrong button on Minecraft 26.3: right-click actions such as copy coordinates and list context menus fired on left click, while left-click actions such as list selection, measure points, spawn pins and waypoints did not respond - Fixed the spawn point override: the pinned spawn only applies to the world being created, opening an existing world first no longer touches its spawn, and a failed apply is logged instead of silently counting as applied - Fixed resources leaking when the preview screen was closed while a settings reload was still running ### Improvements - While the map is dragged, the biome layer now samples one sample per chunk and the detail layers (structures, heightmap, intersections and the adjacent Y layers) wait for the drag to end; the coarsely filled area is re-sampled at full resolution in place on release. The behaviour is on by default and has no setting of its own yet - Closing the preview no longer rewrites the on-disk preview cache when nothing new was sampled since it was last saved, so a browse-only session skips the full save pass - Consecutive zoom steps — wheel ticks and slider drags — now share a single re-render inside a short window instead of paying one full re-render per step; the map level still applies immediately and the view is at most one window behind - Reworked the terrain map export screen layout: settings, status and the category legend now sit in outlined panels matching the seed search and analysis screens, the export/settings tab pair is gone, the layout no longer overflows small gui heights such as GUI scale 4, and the progress bar keeps showing its percentage and coloring failures red - A refused export start now reports the reason instead of doing nothing - A batch export no longer aborts the remaining dimensions when one dimension fails, and batch runs now show elapsed and remaining time like single-dimension exports - Reworked the analysis screen's biome share table: holding the middle mouse button autoscrolls it at a speed set by the cursor's distance from the press point (it keeps scrolling while the mouse holds still), the wheel scrolls three rows per step with a short glide, and a scrollbar on the right edge tracks the visible range, jumps under the cursor on press and drags 1:1; on layouts too small for a single table row the stacked-bar header collapses to the title, diversity line and biome bar. The same middle-press autoscroll and short wheel glide now cover the analysis overview panel, the settings pages, the biome and structure lists, the seed search lists and the terrain export history, whose scrollbar strips also jump under the cursor and drag 1:1; the export history keeps every entry - The analysis screen's terrain export and structure waypoint actions joined the report and back buttons in one footer row beneath the panels - Terrain map exports can overlay a coordinate grid (16 to 4096 blocks, opt-in per export) and write an optional grayscale heightmap PNG next to the terrain PNG; the export metadata JSON now also carries per-category pixel counts - The analysis screen gained an Export This Region action that opens the terrain export screen prefilled with the analyzed area - The in-game preview now remembers the last map position between sessions; an opt-in Open preview at player setting anchors the initial view on the player instead - The hover panel can show the sampled temperature, humidity, continentalness, erosion, depth, weirdness and peaks-valleys values behind an opt-in setting, measured distances show the surface height difference between both endpoints, and viewport PNG exports write a JSON sidecar with the seed, dimension, world identity and view center - The analysis screen's structure rows are clickable to add a waypoint, and a footer button drops every structure in the analyzed region into the waypoint list at once - Terrain map exports append to a history file and the export screen browses the full history; clicking a row copies the exported file's absolute path - Holding Ctrl while right-clicking a seed search result saves it to the saved-seed library, and the history view gained a button that clears all non-favorite entries - Right-clicking a waypoint pin on the preview map copies a /tp command with the waypoint's coordinates - Terrain map exports can color the map per biome (opt-in): every pixel takes the biome's preview color — the same colors the preview's biome view uses, including user overrides — instead of the nine terrain categories, and the export metadata JSON carries a per-biome legend mapping every used color to its biome id and name - Terrain map exports sample biomes at the Y layer the preview is scrolled to instead of a fixed Y 64, so the exported map matches the layer being viewed and the storage fast path applies to it; every dimension of a batch export samples at that same layer and the metadata JSON records it --- For the full changelog of every version, see the [CHANGELOG on GitHub](https://github.com/seisou123/World-Preview-Unofficial-Port-/blob/main/CHANGELOG.md).
release

World Preview (Unofficial Port) 1.5.5

1.5.5
17 окт. 2026 г.138Minecraft: 26.2fabric
Скачать
Что нового
## 1.5.5 ### Fixes - Fixed the exported terrain map PNG showing red and blue swapped on Minecraft 1.21.11 and the 26.x versions, and the same swap on the export screen's legend swatches - Fixed the terrain map export failing with out-of-memory on extreme coverage radius and resolution combinations: such combinations are now rejected up front with an explanation on the export screen - Fixed the profile direction button on the analysis screen not switching on Minecraft 1.21.11 and the 26.x versions - Fixed mouse buttons acting as the wrong button on Minecraft 26.3: right-click actions such as copy coordinates and list context menus fired on left click, while left-click actions such as list selection, measure points, spawn pins and waypoints did not respond - Fixed the spawn point override: the pinned spawn only applies to the world being created, opening an existing world first no longer touches its spawn, and a failed apply is logged instead of silently counting as applied - Fixed resources leaking when the preview screen was closed while a settings reload was still running ### Improvements - While the map is dragged, the biome layer now samples one sample per chunk and the detail layers (structures, heightmap, intersections and the adjacent Y layers) wait for the drag to end; the coarsely filled area is re-sampled at full resolution in place on release. The behaviour is on by default and has no setting of its own yet - Closing the preview no longer rewrites the on-disk preview cache when nothing new was sampled since it was last saved, so a browse-only session skips the full save pass - Consecutive zoom steps — wheel ticks and slider drags — now share a single re-render inside a short window instead of paying one full re-render per step; the map level still applies immediately and the view is at most one window behind - Reworked the terrain map export screen layout: settings, status and the category legend now sit in outlined panels matching the seed search and analysis screens, the export/settings tab pair is gone, the layout no longer overflows small gui heights such as GUI scale 4, and the progress bar keeps showing its percentage and coloring failures red - A refused export start now reports the reason instead of doing nothing - A batch export no longer aborts the remaining dimensions when one dimension fails, and batch runs now show elapsed and remaining time like single-dimension exports - Reworked the analysis screen's biome share table: holding the middle mouse button autoscrolls it at a speed set by the cursor's distance from the press point (it keeps scrolling while the mouse holds still), the wheel scrolls three rows per step with a short glide, and a scrollbar on the right edge tracks the visible range, jumps under the cursor on press and drags 1:1; on layouts too small for a single table row the stacked-bar header collapses to the title, diversity line and biome bar. The same middle-press autoscroll and short wheel glide now cover the analysis overview panel, the settings pages, the biome and structure lists, the seed search lists and the terrain export history, whose scrollbar strips also jump under the cursor and drag 1:1; the export history keeps every entry - The analysis screen's terrain export and structure waypoint actions joined the report and back buttons in one footer row beneath the panels - Terrain map exports can overlay a coordinate grid (16 to 4096 blocks, opt-in per export) and write an optional grayscale heightmap PNG next to the terrain PNG; the export metadata JSON now also carries per-category pixel counts - The analysis screen gained an Export This Region action that opens the terrain export screen prefilled with the analyzed area - The in-game preview now remembers the last map position between sessions; an opt-in Open preview at player setting anchors the initial view on the player instead - The hover panel can show the sampled temperature, humidity, continentalness, erosion, depth, weirdness and peaks-valleys values behind an opt-in setting, measured distances show the surface height difference between both endpoints, and viewport PNG exports write a JSON sidecar with the seed, dimension, world identity and view center - The analysis screen's structure rows are clickable to add a waypoint, and a footer button drops every structure in the analyzed region into the waypoint list at once - Terrain map exports append to a history file and the export screen browses the full history; clicking a row copies the exported file's absolute path - Holding Ctrl while right-clicking a seed search result saves it to the saved-seed library, and the history view gained a button that clears all non-favorite entries - Right-clicking a waypoint pin on the preview map copies a /tp command with the waypoint's coordinates - Terrain map exports can color the map per biome (opt-in): every pixel takes the biome's preview color — the same colors the preview's biome view uses, including user overrides — instead of the nine terrain categories, and the export metadata JSON carries a per-biome legend mapping every used color to its biome id and name - Terrain map exports sample biomes at the Y layer the preview is scrolled to instead of a fixed Y 64, so the exported map matches the layer being viewed and the storage fast path applies to it; every dimension of a batch export samples at that same layer and the metadata JSON records it --- For the full changelog of every version, see the [CHANGELOG on GitHub](https://github.com/seisou123/World-Preview-Unofficial-Port-/blob/main/CHANGELOG.md).
release

World Preview (Unofficial Port) 1.5.5

1.5.5
17 окт. 2026 г.13Minecraft: 26.1.2neoforge
Скачать
Что нового
## 1.5.5 ### Fixes - Fixed the exported terrain map PNG showing red and blue swapped on Minecraft 1.21.11 and the 26.x versions, and the same swap on the export screen's legend swatches - Fixed the terrain map export failing with out-of-memory on extreme coverage radius and resolution combinations: such combinations are now rejected up front with an explanation on the export screen - Fixed the profile direction button on the analysis screen not switching on Minecraft 1.21.11 and the 26.x versions - Fixed mouse buttons acting as the wrong button on Minecraft 26.3: right-click actions such as copy coordinates and list context menus fired on left click, while left-click actions such as list selection, measure points, spawn pins and waypoints did not respond - Fixed the spawn point override: the pinned spawn only applies to the world being created, opening an existing world first no longer touches its spawn, and a failed apply is logged instead of silently counting as applied - Fixed resources leaking when the preview screen was closed while a settings reload was still running ### Improvements - While the map is dragged, the biome layer now samples one sample per chunk and the detail layers (structures, heightmap, intersections and the adjacent Y layers) wait for the drag to end; the coarsely filled area is re-sampled at full resolution in place on release. The behaviour is on by default and has no setting of its own yet - Closing the preview no longer rewrites the on-disk preview cache when nothing new was sampled since it was last saved, so a browse-only session skips the full save pass - Consecutive zoom steps — wheel ticks and slider drags — now share a single re-render inside a short window instead of paying one full re-render per step; the map level still applies immediately and the view is at most one window behind - Reworked the terrain map export screen layout: settings, status and the category legend now sit in outlined panels matching the seed search and analysis screens, the export/settings tab pair is gone, the layout no longer overflows small gui heights such as GUI scale 4, and the progress bar keeps showing its percentage and coloring failures red - A refused export start now reports the reason instead of doing nothing - A batch export no longer aborts the remaining dimensions when one dimension fails, and batch runs now show elapsed and remaining time like single-dimension exports - Reworked the analysis screen's biome share table: holding the middle mouse button autoscrolls it at a speed set by the cursor's distance from the press point (it keeps scrolling while the mouse holds still), the wheel scrolls three rows per step with a short glide, and a scrollbar on the right edge tracks the visible range, jumps under the cursor on press and drags 1:1; on layouts too small for a single table row the stacked-bar header collapses to the title, diversity line and biome bar. The same middle-press autoscroll and short wheel glide now cover the analysis overview panel, the settings pages, the biome and structure lists, the seed search lists and the terrain export history, whose scrollbar strips also jump under the cursor and drag 1:1; the export history keeps every entry - The analysis screen's terrain export and structure waypoint actions joined the report and back buttons in one footer row beneath the panels - Terrain map exports can overlay a coordinate grid (16 to 4096 blocks, opt-in per export) and write an optional grayscale heightmap PNG next to the terrain PNG; the export metadata JSON now also carries per-category pixel counts - The analysis screen gained an Export This Region action that opens the terrain export screen prefilled with the analyzed area - The in-game preview now remembers the last map position between sessions; an opt-in Open preview at player setting anchors the initial view on the player instead - The hover panel can show the sampled temperature, humidity, continentalness, erosion, depth, weirdness and peaks-valleys values behind an opt-in setting, measured distances show the surface height difference between both endpoints, and viewport PNG exports write a JSON sidecar with the seed, dimension, world identity and view center - The analysis screen's structure rows are clickable to add a waypoint, and a footer button drops every structure in the analyzed region into the waypoint list at once - Terrain map exports append to a history file and the export screen browses the full history; clicking a row copies the exported file's absolute path - Holding Ctrl while right-clicking a seed search result saves it to the saved-seed library, and the history view gained a button that clears all non-favorite entries - Right-clicking a waypoint pin on the preview map copies a /tp command with the waypoint's coordinates - Terrain map exports can color the map per biome (opt-in): every pixel takes the biome's preview color — the same colors the preview's biome view uses, including user overrides — instead of the nine terrain categories, and the export metadata JSON carries a per-biome legend mapping every used color to its biome id and name - Terrain map exports sample biomes at the Y layer the preview is scrolled to instead of a fixed Y 64, so the exported map matches the layer being viewed and the storage fast path applies to it; every dimension of a batch export samples at that same layer and the metadata JSON records it --- For the full changelog of every version, see the [CHANGELOG on GitHub](https://github.com/seisou123/World-Preview-Unofficial-Port-/blob/main/CHANGELOG.md).
release

World Preview (Unofficial Port) 1.5.5

1.5.5
17 окт. 2026 г.45Minecraft: 26.1.2fabric
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Что нового
## 1.5.5 ### Fixes - Fixed the exported terrain map PNG showing red and blue swapped on Minecraft 1.21.11 and the 26.x versions, and the same swap on the export screen's legend swatches - Fixed the terrain map export failing with out-of-memory on extreme coverage radius and resolution combinations: such combinations are now rejected up front with an explanation on the export screen - Fixed the profile direction button on the analysis screen not switching on Minecraft 1.21.11 and the 26.x versions - Fixed mouse buttons acting as the wrong button on Minecraft 26.3: right-click actions such as copy coordinates and list context menus fired on left click, while left-click actions such as list selection, measure points, spawn pins and waypoints did not respond - Fixed the spawn point override: the pinned spawn only applies to the world being created, opening an existing world first no longer touches its spawn, and a failed apply is logged instead of silently counting as applied - Fixed resources leaking when the preview screen was closed while a settings reload was still running ### Improvements - While the map is dragged, the biome layer now samples one sample per chunk and the detail layers (structures, heightmap, intersections and the adjacent Y layers) wait for the drag to end; the coarsely filled area is re-sampled at full resolution in place on release. The behaviour is on by default and has no setting of its own yet - Closing the preview no longer rewrites the on-disk preview cache when nothing new was sampled since it was last saved, so a browse-only session skips the full save pass - Consecutive zoom steps — wheel ticks and slider drags — now share a single re-render inside a short window instead of paying one full re-render per step; the map level still applies immediately and the view is at most one window behind - Reworked the terrain map export screen layout: settings, status and the category legend now sit in outlined panels matching the seed search and analysis screens, the export/settings tab pair is gone, the layout no longer overflows small gui heights such as GUI scale 4, and the progress bar keeps showing its percentage and coloring failures red - A refused export start now reports the reason instead of doing nothing - A batch export no longer aborts the remaining dimensions when one dimension fails, and batch runs now show elapsed and remaining time like single-dimension exports - Reworked the analysis screen's biome share table: holding the middle mouse button autoscrolls it at a speed set by the cursor's distance from the press point (it keeps scrolling while the mouse holds still), the wheel scrolls three rows per step with a short glide, and a scrollbar on the right edge tracks the visible range, jumps under the cursor on press and drags 1:1; on layouts too small for a single table row the stacked-bar header collapses to the title, diversity line and biome bar. The same middle-press autoscroll and short wheel glide now cover the analysis overview panel, the settings pages, the biome and structure lists, the seed search lists and the terrain export history, whose scrollbar strips also jump under the cursor and drag 1:1; the export history keeps every entry - The analysis screen's terrain export and structure waypoint actions joined the report and back buttons in one footer row beneath the panels - Terrain map exports can overlay a coordinate grid (16 to 4096 blocks, opt-in per export) and write an optional grayscale heightmap PNG next to the terrain PNG; the export metadata JSON now also carries per-category pixel counts - The analysis screen gained an Export This Region action that opens the terrain export screen prefilled with the analyzed area - The in-game preview now remembers the last map position between sessions; an opt-in Open preview at player setting anchors the initial view on the player instead - The hover panel can show the sampled temperature, humidity, continentalness, erosion, depth, weirdness and peaks-valleys values behind an opt-in setting, measured distances show the surface height difference between both endpoints, and viewport PNG exports write a JSON sidecar with the seed, dimension, world identity and view center - The analysis screen's structure rows are clickable to add a waypoint, and a footer button drops every structure in the analyzed region into the waypoint list at once - Terrain map exports append to a history file and the export screen browses the full history; clicking a row copies the exported file's absolute path - Holding Ctrl while right-clicking a seed search result saves it to the saved-seed library, and the history view gained a button that clears all non-favorite entries - Right-clicking a waypoint pin on the preview map copies a /tp command with the waypoint's coordinates - Terrain map exports can color the map per biome (opt-in): every pixel takes the biome's preview color — the same colors the preview's biome view uses, including user overrides — instead of the nine terrain categories, and the export metadata JSON carries a per-biome legend mapping every used color to its biome id and name - Terrain map exports sample biomes at the Y layer the preview is scrolled to instead of a fixed Y 64, so the exported map matches the layer being viewed and the storage fast path applies to it; every dimension of a batch export samples at that same layer and the metadata JSON records it --- For the full changelog of every version, see the [CHANGELOG on GitHub](https://github.com/seisou123/World-Preview-Unofficial-Port-/blob/main/CHANGELOG.md).
release

World Preview (Unofficial Port) 1.5.5

1.5.5
17 окт. 2026 г.12Minecraft: 1.21.11neoforge
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Что нового
## 1.5.5 ### Fixes - Fixed the exported terrain map PNG showing red and blue swapped on Minecraft 1.21.11 and the 26.x versions, and the same swap on the export screen's legend swatches - Fixed the terrain map export failing with out-of-memory on extreme coverage radius and resolution combinations: such combinations are now rejected up front with an explanation on the export screen - Fixed the profile direction button on the analysis screen not switching on Minecraft 1.21.11 and the 26.x versions - Fixed mouse buttons acting as the wrong button on Minecraft 26.3: right-click actions such as copy coordinates and list context menus fired on left click, while left-click actions such as list selection, measure points, spawn pins and waypoints did not respond - Fixed the spawn point override: the pinned spawn only applies to the world being created, opening an existing world first no longer touches its spawn, and a failed apply is logged instead of silently counting as applied - Fixed resources leaking when the preview screen was closed while a settings reload was still running ### Improvements - While the map is dragged, the biome layer now samples one sample per chunk and the detail layers (structures, heightmap, intersections and the adjacent Y layers) wait for the drag to end; the coarsely filled area is re-sampled at full resolution in place on release. The behaviour is on by default and has no setting of its own yet - Closing the preview no longer rewrites the on-disk preview cache when nothing new was sampled since it was last saved, so a browse-only session skips the full save pass - Consecutive zoom steps — wheel ticks and slider drags — now share a single re-render inside a short window instead of paying one full re-render per step; the map level still applies immediately and the view is at most one window behind - Reworked the terrain map export screen layout: settings, status and the category legend now sit in outlined panels matching the seed search and analysis screens, the export/settings tab pair is gone, the layout no longer overflows small gui heights such as GUI scale 4, and the progress bar keeps showing its percentage and coloring failures red - A refused export start now reports the reason instead of doing nothing - A batch export no longer aborts the remaining dimensions when one dimension fails, and batch runs now show elapsed and remaining time like single-dimension exports - Reworked the analysis screen's biome share table: holding the middle mouse button autoscrolls it at a speed set by the cursor's distance from the press point (it keeps scrolling while the mouse holds still), the wheel scrolls three rows per step with a short glide, and a scrollbar on the right edge tracks the visible range, jumps under the cursor on press and drags 1:1; on layouts too small for a single table row the stacked-bar header collapses to the title, diversity line and biome bar. The same middle-press autoscroll and short wheel glide now cover the analysis overview panel, the settings pages, the biome and structure lists, the seed search lists and the terrain export history, whose scrollbar strips also jump under the cursor and drag 1:1; the export history keeps every entry - The analysis screen's terrain export and structure waypoint actions joined the report and back buttons in one footer row beneath the panels - Terrain map exports can overlay a coordinate grid (16 to 4096 blocks, opt-in per export) and write an optional grayscale heightmap PNG next to the terrain PNG; the export metadata JSON now also carries per-category pixel counts - The analysis screen gained an Export This Region action that opens the terrain export screen prefilled with the analyzed area - The in-game preview now remembers the last map position between sessions; an opt-in Open preview at player setting anchors the initial view on the player instead - The hover panel can show the sampled temperature, humidity, continentalness, erosion, depth, weirdness and peaks-valleys values behind an opt-in setting, measured distances show the surface height difference between both endpoints, and viewport PNG exports write a JSON sidecar with the seed, dimension, world identity and view center - The analysis screen's structure rows are clickable to add a waypoint, and a footer button drops every structure in the analyzed region into the waypoint list at once - Terrain map exports append to a history file and the export screen browses the full history; clicking a row copies the exported file's absolute path - Holding Ctrl while right-clicking a seed search result saves it to the saved-seed library, and the history view gained a button that clears all non-favorite entries - Right-clicking a waypoint pin on the preview map copies a /tp command with the waypoint's coordinates - Terrain map exports can color the map per biome (opt-in): every pixel takes the biome's preview color — the same colors the preview's biome view uses, including user overrides — instead of the nine terrain categories, and the export metadata JSON carries a per-biome legend mapping every used color to its biome id and name - Terrain map exports sample biomes at the Y layer the preview is scrolled to instead of a fixed Y 64, so the exported map matches the layer being viewed and the storage fast path applies to it; every dimension of a batch export samples at that same layer and the metadata JSON records it --- For the full changelog of every version, see the [CHANGELOG on GitHub](https://github.com/seisou123/World-Preview-Unofficial-Port-/blob/main/CHANGELOG.md).
release

World Preview (Unofficial Port) 1.5.5

1.5.5
17 окт. 2026 г.101Minecraft: 1.21.11fabric
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Что нового
## 1.5.5 ### Fixes - Fixed the exported terrain map PNG showing red and blue swapped on Minecraft 1.21.11 and the 26.x versions, and the same swap on the export screen's legend swatches - Fixed the terrain map export failing with out-of-memory on extreme coverage radius and resolution combinations: such combinations are now rejected up front with an explanation on the export screen - Fixed the profile direction button on the analysis screen not switching on Minecraft 1.21.11 and the 26.x versions - Fixed mouse buttons acting as the wrong button on Minecraft 26.3: right-click actions such as copy coordinates and list context menus fired on left click, while left-click actions such as list selection, measure points, spawn pins and waypoints did not respond - Fixed the spawn point override: the pinned spawn only applies to the world being created, opening an existing world first no longer touches its spawn, and a failed apply is logged instead of silently counting as applied - Fixed resources leaking when the preview screen was closed while a settings reload was still running ### Improvements - While the map is dragged, the biome layer now samples one sample per chunk and the detail layers (structures, heightmap, intersections and the adjacent Y layers) wait for the drag to end; the coarsely filled area is re-sampled at full resolution in place on release. The behaviour is on by default and has no setting of its own yet - Closing the preview no longer rewrites the on-disk preview cache when nothing new was sampled since it was last saved, so a browse-only session skips the full save pass - Consecutive zoom steps — wheel ticks and slider drags — now share a single re-render inside a short window instead of paying one full re-render per step; the map level still applies immediately and the view is at most one window behind - Reworked the terrain map export screen layout: settings, status and the category legend now sit in outlined panels matching the seed search and analysis screens, the export/settings tab pair is gone, the layout no longer overflows small gui heights such as GUI scale 4, and the progress bar keeps showing its percentage and coloring failures red - A refused export start now reports the reason instead of doing nothing - A batch export no longer aborts the remaining dimensions when one dimension fails, and batch runs now show elapsed and remaining time like single-dimension exports - Reworked the analysis screen's biome share table: holding the middle mouse button autoscrolls it at a speed set by the cursor's distance from the press point (it keeps scrolling while the mouse holds still), the wheel scrolls three rows per step with a short glide, and a scrollbar on the right edge tracks the visible range, jumps under the cursor on press and drags 1:1; on layouts too small for a single table row the stacked-bar header collapses to the title, diversity line and biome bar. The same middle-press autoscroll and short wheel glide now cover the analysis overview panel, the settings pages, the biome and structure lists, the seed search lists and the terrain export history, whose scrollbar strips also jump under the cursor and drag 1:1; the export history keeps every entry - The analysis screen's terrain export and structure waypoint actions joined the report and back buttons in one footer row beneath the panels - Terrain map exports can overlay a coordinate grid (16 to 4096 blocks, opt-in per export) and write an optional grayscale heightmap PNG next to the terrain PNG; the export metadata JSON now also carries per-category pixel counts - The analysis screen gained an Export This Region action that opens the terrain export screen prefilled with the analyzed area - The in-game preview now remembers the last map position between sessions; an opt-in Open preview at player setting anchors the initial view on the player instead - The hover panel can show the sampled temperature, humidity, continentalness, erosion, depth, weirdness and peaks-valleys values behind an opt-in setting, measured distances show the surface height difference between both endpoints, and viewport PNG exports write a JSON sidecar with the seed, dimension, world identity and view center - The analysis screen's structure rows are clickable to add a waypoint, and a footer button drops every structure in the analyzed region into the waypoint list at once - Terrain map exports append to a history file and the export screen browses the full history; clicking a row copies the exported file's absolute path - Holding Ctrl while right-clicking a seed search result saves it to the saved-seed library, and the history view gained a button that clears all non-favorite entries - Right-clicking a waypoint pin on the preview map copies a /tp command with the waypoint's coordinates - Terrain map exports can color the map per biome (opt-in): every pixel takes the biome's preview color — the same colors the preview's biome view uses, including user overrides — instead of the nine terrain categories, and the export metadata JSON carries a per-biome legend mapping every used color to its biome id and name - Terrain map exports sample biomes at the Y layer the preview is scrolled to instead of a fixed Y 64, so the exported map matches the layer being viewed and the storage fast path applies to it; every dimension of a batch export samples at that same layer and the metadata JSON records it --- For the full changelog of every version, see the [CHANGELOG on GitHub](https://github.com/seisou123/World-Preview-Unofficial-Port-/blob/main/CHANGELOG.md).
release

World Preview (Unofficial Port) 1.5.5

1.5.5
17 окт. 2026 г.146Minecraft: 1.21.1neoforge
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Что нового
## 1.5.5 ### Fixes - Fixed the exported terrain map PNG showing red and blue swapped on Minecraft 1.21.11 and the 26.x versions, and the same swap on the export screen's legend swatches - Fixed the terrain map export failing with out-of-memory on extreme coverage radius and resolution combinations: such combinations are now rejected up front with an explanation on the export screen - Fixed the profile direction button on the analysis screen not switching on Minecraft 1.21.11 and the 26.x versions - Fixed mouse buttons acting as the wrong button on Minecraft 26.3: right-click actions such as copy coordinates and list context menus fired on left click, while left-click actions such as list selection, measure points, spawn pins and waypoints did not respond - Fixed the spawn point override: the pinned spawn only applies to the world being created, opening an existing world first no longer touches its spawn, and a failed apply is logged instead of silently counting as applied - Fixed resources leaking when the preview screen was closed while a settings reload was still running ### Improvements - While the map is dragged, the biome layer now samples one sample per chunk and the detail layers (structures, heightmap, intersections and the adjacent Y layers) wait for the drag to end; the coarsely filled area is re-sampled at full resolution in place on release. The behaviour is on by default and has no setting of its own yet - Closing the preview no longer rewrites the on-disk preview cache when nothing new was sampled since it was last saved, so a browse-only session skips the full save pass - Consecutive zoom steps — wheel ticks and slider drags — now share a single re-render inside a short window instead of paying one full re-render per step; the map level still applies immediately and the view is at most one window behind - Reworked the terrain map export screen layout: settings, status and the category legend now sit in outlined panels matching the seed search and analysis screens, the export/settings tab pair is gone, the layout no longer overflows small gui heights such as GUI scale 4, and the progress bar keeps showing its percentage and coloring failures red - A refused export start now reports the reason instead of doing nothing - A batch export no longer aborts the remaining dimensions when one dimension fails, and batch runs now show elapsed and remaining time like single-dimension exports - Reworked the analysis screen's biome share table: holding the middle mouse button autoscrolls it at a speed set by the cursor's distance from the press point (it keeps scrolling while the mouse holds still), the wheel scrolls three rows per step with a short glide, and a scrollbar on the right edge tracks the visible range, jumps under the cursor on press and drags 1:1; on layouts too small for a single table row the stacked-bar header collapses to the title, diversity line and biome bar. The same middle-press autoscroll and short wheel glide now cover the analysis overview panel, the settings pages, the biome and structure lists, the seed search lists and the terrain export history, whose scrollbar strips also jump under the cursor and drag 1:1; the export history keeps every entry - The analysis screen's terrain export and structure waypoint actions joined the report and back buttons in one footer row beneath the panels - Terrain map exports can overlay a coordinate grid (16 to 4096 blocks, opt-in per export) and write an optional grayscale heightmap PNG next to the terrain PNG; the export metadata JSON now also carries per-category pixel counts - The analysis screen gained an Export This Region action that opens the terrain export screen prefilled with the analyzed area - The in-game preview now remembers the last map position between sessions; an opt-in Open preview at player setting anchors the initial view on the player instead - The hover panel can show the sampled temperature, humidity, continentalness, erosion, depth, weirdness and peaks-valleys values behind an opt-in setting, measured distances show the surface height difference between both endpoints, and viewport PNG exports write a JSON sidecar with the seed, dimension, world identity and view center - The analysis screen's structure rows are clickable to add a waypoint, and a footer button drops every structure in the analyzed region into the waypoint list at once - Terrain map exports append to a history file and the export screen browses the full history; clicking a row copies the exported file's absolute path - Holding Ctrl while right-clicking a seed search result saves it to the saved-seed library, and the history view gained a button that clears all non-favorite entries - Right-clicking a waypoint pin on the preview map copies a /tp command with the waypoint's coordinates - Terrain map exports can color the map per biome (opt-in): every pixel takes the biome's preview color — the same colors the preview's biome view uses, including user overrides — instead of the nine terrain categories, and the export metadata JSON carries a per-biome legend mapping every used color to its biome id and name - Terrain map exports sample biomes at the Y layer the preview is scrolled to instead of a fixed Y 64, so the exported map matches the layer being viewed and the storage fast path applies to it; every dimension of a batch export samples at that same layer and the metadata JSON records it --- For the full changelog of every version, see the [CHANGELOG on GitHub](https://github.com/seisou123/World-Preview-Unofficial-Port-/blob/main/CHANGELOG.md).
release

World Preview (Unofficial Port) 1.5.5

1.5.5
17 окт. 2026 г.128Minecraft: 1.21.1fabric
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Что нового
## 1.5.5 ### Fixes - Fixed the exported terrain map PNG showing red and blue swapped on Minecraft 1.21.11 and the 26.x versions, and the same swap on the export screen's legend swatches - Fixed the terrain map export failing with out-of-memory on extreme coverage radius and resolution combinations: such combinations are now rejected up front with an explanation on the export screen - Fixed the profile direction button on the analysis screen not switching on Minecraft 1.21.11 and the 26.x versions - Fixed mouse buttons acting as the wrong button on Minecraft 26.3: right-click actions such as copy coordinates and list context menus fired on left click, while left-click actions such as list selection, measure points, spawn pins and waypoints did not respond - Fixed the spawn point override: the pinned spawn only applies to the world being created, opening an existing world first no longer touches its spawn, and a failed apply is logged instead of silently counting as applied - Fixed resources leaking when the preview screen was closed while a settings reload was still running ### Improvements - While the map is dragged, the biome layer now samples one sample per chunk and the detail layers (structures, heightmap, intersections and the adjacent Y layers) wait for the drag to end; the coarsely filled area is re-sampled at full resolution in place on release. The behaviour is on by default and has no setting of its own yet - Closing the preview no longer rewrites the on-disk preview cache when nothing new was sampled since it was last saved, so a browse-only session skips the full save pass - Consecutive zoom steps — wheel ticks and slider drags — now share a single re-render inside a short window instead of paying one full re-render per step; the map level still applies immediately and the view is at most one window behind - Reworked the terrain map export screen layout: settings, status and the category legend now sit in outlined panels matching the seed search and analysis screens, the export/settings tab pair is gone, the layout no longer overflows small gui heights such as GUI scale 4, and the progress bar keeps showing its percentage and coloring failures red - A refused export start now reports the reason instead of doing nothing - A batch export no longer aborts the remaining dimensions when one dimension fails, and batch runs now show elapsed and remaining time like single-dimension exports - Reworked the analysis screen's biome share table: holding the middle mouse button autoscrolls it at a speed set by the cursor's distance from the press point (it keeps scrolling while the mouse holds still), the wheel scrolls three rows per step with a short glide, and a scrollbar on the right edge tracks the visible range, jumps under the cursor on press and drags 1:1; on layouts too small for a single table row the stacked-bar header collapses to the title, diversity line and biome bar. The same middle-press autoscroll and short wheel glide now cover the analysis overview panel, the settings pages, the biome and structure lists, the seed search lists and the terrain export history, whose scrollbar strips also jump under the cursor and drag 1:1; the export history keeps every entry - The analysis screen's terrain export and structure waypoint actions joined the report and back buttons in one footer row beneath the panels - Terrain map exports can overlay a coordinate grid (16 to 4096 blocks, opt-in per export) and write an optional grayscale heightmap PNG next to the terrain PNG; the export metadata JSON now also carries per-category pixel counts - The analysis screen gained an Export This Region action that opens the terrain export screen prefilled with the analyzed area - The in-game preview now remembers the last map position between sessions; an opt-in Open preview at player setting anchors the initial view on the player instead - The hover panel can show the sampled temperature, humidity, continentalness, erosion, depth, weirdness and peaks-valleys values behind an opt-in setting, measured distances show the surface height difference between both endpoints, and viewport PNG exports write a JSON sidecar with the seed, dimension, world identity and view center - The analysis screen's structure rows are clickable to add a waypoint, and a footer button drops every structure in the analyzed region into the waypoint list at once - Terrain map exports append to a history file and the export screen browses the full history; clicking a row copies the exported file's absolute path - Holding Ctrl while right-clicking a seed search result saves it to the saved-seed library, and the history view gained a button that clears all non-favorite entries - Right-clicking a waypoint pin on the preview map copies a /tp command with the waypoint's coordinates - Terrain map exports can color the map per biome (opt-in): every pixel takes the biome's preview color — the same colors the preview's biome view uses, including user overrides — instead of the nine terrain categories, and the export metadata JSON carries a per-biome legend mapping every used color to its biome id and name - Terrain map exports sample biomes at the Y layer the preview is scrolled to instead of a fixed Y 64, so the exported map matches the layer being viewed and the storage fast path applies to it; every dimension of a batch export samples at that same layer and the metadata JSON records it --- For the full changelog of every version, see the [CHANGELOG on GitHub](https://github.com/seisou123/World-Preview-Unofficial-Port-/blob/main/CHANGELOG.md).