Chunkbase Seed Finder vs Crafty Seed Map

Chunkbase Seed Finder searches for Minecraft seeds that meet conditions you set. Choose Java or Bedrock and the game version, then search for biomes, islands, terrain height, nearby features, or feature clusters in the Overworld and Nether. You can measure conditions from world spawn, the origin, or custom coordinates. Nearby searches cover up to 2048 blocks in a square or circular area. Presets include island starts with a nearby village, several villages near spawn, speedrun-friendly starts, and a large mushroom island at the origin. Results appear in a list with a map preview; you can copy or favorite seeds, or open one in Seed Map. The app saves your conditions and latest search, including results, locally and restores them when you return. It works on phones and tablets, though a fast multi-core CPU can check more seeds in the same time. Searches stop at a result or time limit; Search more continues them. Spawn locations are estimates, and feature locations or sampled terrain conditions may be inaccurate or incomplete.

Crafty Seed Map is a free web tool for Minecraft Java players who want to inspect seed terrain and locate biomes, slime chunks, and structures. It accepts numeric seeds and text seeds, hashing text as the game does, and can display the Overworld, Nether, and End. A nearest-search function works outward from an origin in a spiral and checks structure candidates against biome requirements. Named, colored markers are stored in the browser for each seed, while a shareable URL preserves the seed, viewport, visible 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 locations are revalidated against biomes. Supported versions are Java Edition 1.18.2, 1.19.4, 1.20.6, 1.21.1, and 1.21.3; Bedrock Edition is not supported. The map is described as mobile-first and includes pinch-to-zoom controls, with no ads. Buried treasure, mineshafts, geodes, desert wells, and end gateways appear only at sufficiently close zoom levels.