PerfGuard scans your code for performance anti-patterns — N+1 queries, synchronous I/O, missing pagination, memory leaks, and unbounded operations. Before your users notice.
Performance anti-patterns hide in plain sight. A query in a loop, a sync read on the hot path, an unbounded fetch. PerfGuard finds them before your monitoring dashboard lights up red.
Queries in loops, missing eager loading, unbatched operations. The most common performance killer, caught before it ships.
Sync I/O in async contexts, missing Promise.all, blocking operations on the hot path that tank your throughput.
Lodash imports pulling in full libraries, unshaken modules, missing code splitting. Ship less JavaScript to your users.
Event listener leaks, unbounded caches, missing cleanup in components and services that slowly eat your server memory.
Unbounded queries, missing LIMIT clauses, infinite scroll traps. Prevent fetching 100K rows when you only need 20.
Set thresholds, track scores over time, gate CI/CD deployments. Never let a performance regression reach production.
The only pre-production performance scanner that runs 100% locally.
| Feature | PerfGuard | Datadog APM ($31/host) | New Relic ($0.30/GB) | Lighthouse CI ($0) |
|---|---|---|---|---|
| Price | Free / $19 / $39 | $31/host/mo | $0.30/GB | Free (limited) |
| Pre-production | Yes | No (runtime) | No (runtime) | Build only |
| Runs Locally | Yes | No | No | Yes |
| N+1 Detection | Yes | Yes (runtime) | Yes (runtime) | No |
| Code-level | Yes | No | No | No |
| Pre-commit Hooks | Yes | No | No | No |
| Zero Config | Yes | No | No | No |
| Multi-language | Yes | Yes | Yes | No |
| Setup Time | 30 seconds | 30+ min | 20+ min | 10 min |
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Install PerfGuard in 30 seconds. Fix performance before it costs you.