JustHandled Labs
// performance

Perf Budget Auditor

Audit your frontend build against a performance budget and catch size regressions before you ship.

What it flags

How to run

Point it at a stats.json and a perf-budget.json you control. Read-only; it does not run the bundler.

Good to know

Heuristic. It reads a manifest and file sizes, not a live browser, so it is not Lighthouse.

Questions

What does it catch that a feature review misses?

A bundle creeping over budget or a stray source map shipped to prod.

Does it change anything?

No. It is read-only and flags issues for you to act on.

Hold the line on bundle size.

Current price and purchase option are shown on Agensi. Instant download. Works with any agent that reads SKILL.md.

Get Perf Budget Auditor on Agensi