Crafty Seed Map

What Crafty Seed Map is

Crafty Seed Map is a free web tool for Minecraft Java players who want to inspect a seed’s terrain and plan around biomes and structures. Enter a numeric seed or text seed; text is hashed the way the game hashes it. The map can display the Overworld, Nether, and End, with biome and slime chunk information. Its nearest-search tool spirals outward from an origin and checks structure candidates against biome requirements. You can save named, colored markers in your browser for each seed, while a shareable URL preserves the seed, map view, layers, and biome highlight. World generation runs locally in the browser, and the seed is not sent to a server. The biome layer uses a WebAssembly port of cubiomes, and structure positions are revalidated against biomes. It supports Java Edition 1.18.2, 1.19.4, 1.20.6, 1.21.1, and 1.21.3. The map is described as mobile-first, with pinch-to-zoom controls and no ads.

Who it suits

It suits Minecraft Java players who want to inspect seeds and plan around terrain, biomes, slime chunks, and structures. It is not for Bedrock Edition players.

Limits

The free map supports Java Edition versions 1.18.2, 1.19.4, 1.20.6, 1.21.1, and 1.21.3; Bedrock Edition is unsupported. Buried treasure, mineshafts, geodes, desert wells, and end gateways appear only when zoomed in far enough.

Getting started

1. Open https://crafty.gg/tools/seed-map in a web browser.
2. Enter a numeric seed or a text seed.
3. Choose the map view and layers to inspect the Overworld, Nether, or End.
4. Zoom in to reveal structure types that require a closer view.
5. Add named, colored markers or share the URL to preserve the current map view.

Verdict

Crafty Seed Map combines seed terrain inspection, biome information, and structure search in a browser-based tool. Check that your Java Edition version is listed and that zoom-dependent structure visibility fits how you plan to use it.