Ruined Portal Finder

How to use the Ruined Portal Finder

Paste your world seed into the Seed box and press Find (or hit Random for a fresh one).
Choose your Minecraft version.
The map plots every ruined portal near spawn. Drag to pan, scroll to zoom, or type X / Z and press Go.
Click any entry in the Nearest list to jump the map straight to it and read its coordinates.

🔒 Everything runs in your browser. No account, no download, nothing uploaded — your seed stays on your device.

About ruined portals

Ruined portals hide the cheapest early crying obsidian and the odd enchanted loot. Paste a seed and the map plots each one near spawn with its coordinates — no world load, computed in your browser.

Frequently asked questions

How does the ruined portal finder work?

It runs Minecraft's world generation (cubiomes, compiled to WebAssembly) directly in your browser — no server, no world download, and your seed never leaves your device.

Which Minecraft versions are supported?

Java 1.20 through 26.2 and Bedrock 1.21 and newer — pick yours in the Version dropdown. Generation changes between some versions, so choosing the right one matters.

Is this affiliated with Chunkbase?

No. seedscan is an independent set of seed tools with its own engine and interface.

Nearest ruined portals to spawn

How to use

How to use the Ruined Portal Finder

About ruined portals

Frequently asked questions

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