XRay Wiki & Guide
A client-side X-ray mod: see through blocks to find ores and caves, toggle with a keybind, customize which blocks show, with a coordinate display and fullbright option.
Overview
XRay is a client-side utility mod that lets you see through ordinary blocks to reveal the ores, caves, and structures hidden behind them. Toggle it with a keybind and the world's stone, dirt, and other "noise" blocks turn invisible, leaving only the blocks you care about - diamonds, iron, redstone, ancient debris, caves, and so on - clearly visible.
It also includes quality-of-life extras: an on-screen coordinate display so you can mark finds, and a fullbright option that brightens the world so you can explore caves without torches.
XRay only changes what your client renders; it does not modify the world. Be aware that many multiplayer servers consider X-ray cheating - use it on your own worlds or where it is permitted.