I got tired of EXPLAIN tools that sent my query plans to AI services or hallucinated index suggestions. Built this instead. What it does: • Paste your EXPLAIN (ANALYZE, BUFFERS, FORMAT JSON) output • Get a breakdown of where time actually went • Zero external calls. Your data never leaves the browser. What it catches: • 4.5s hidden in triggers while the scan took 0.03ms • JIT compilation eating 700ms on a 1s query • Bitmap heap scans with 99.9% recheck discard • Recursive CTEs looping 100k+ times What it doesn't do: • AI guesses • "Add index" recommendations when the index already exists • Upload your sensitive query plans anywhere 18 edge cases tested. No API keys, no signup, no bullshit. plancheck.dev What should I add next?