The web edition of hprof-analyzer,
a fast Rust-based tool for investigating Java OutOfMemoryErrors and memory leaks.
Your heap dump never leaves your machine — everything runs locally via WebAssembly.
🔍 Leak suspects, dominator tree & retained sizes
📊 Class histogram, GC roots, allocation sites
🧵 Thread stacks, locals, and per-thread objects
💬 SQL-like OQL query shell with tab-completion
🔒 Fully private — no upload, no server, no telemetry
— or try a sample dump —
hprof-analyzer
Browser UI for Java heap dump analysis
Connect to local server
Start the local server first: hprof-analyzer query heap.hprof --server
Named queries (offline preview)
These 20 built-in queries are loaded from the embedded WASM module: