Config Diff & Merge

Old config on the left, the update on the right. Every difference is highlighted in place; one click moves a block from one side to the other. Download whichever side you finish with. Nothing leaves your browser.

→ makes the right side match yours for that block (an empty block on your side deletes the lines on the right). ← does the same in the other direction. Most people keep editing the left side (their config) and pull in what the update added, then download the left side.

Line diff: Myers' O(ND) algorithm (Eugene W. Myers, 1986), implemented here without libraries. Lua validation: luaparse (MIT).