| name | benchmark |
| description | Performance baseline measurement. Captures page load times, Core Web Vitals, and resource sizes. Compare before/after on every PR. |
| used_by | ["qa-engineer","release-engineer"] |
Benchmark Skill
Load skills/public/browse/SKILL.md for browser commands.
Capture Baseline
Run on each key page:
const page = await browser.newPage();
await page.goto(url, { waitUntil: 'networkidle' });
const timing = await page.evaluate(() => {
const nav = performance.getEntriesByType('navigation')[0];
return {
ttfb: nav.responseStart - nav.requestStart,
domContentLoaded: nav.domContentLoadedEventEnd - nav.startTime,
load: nav.loadEventEnd - nav.startTime,
domInteractive: nav.domInteractive - nav.startTime,
};
});
const resources = await page.evaluate(() => {
return performance.getEntriesByType('resource').map(r => ({
name: r.name.split('/').pop(),
type: r.initiatorType,
size: r.transferSize,
duration: r.duration
}));
});
Pages to Benchmark
/ (homepage)/[DOMAIN_ENTITY_PLURAL] (listing page)/login/profile (if authenticated)
Report Format
Save to docs/BENCHMARK.md:
Performance Benchmark — [date]
| Page | TTFB | DOM Content Loaded | Full Load | Resources | Total Size |
|------|------|-------------------|-----------|-----------|------------|
| / | Xms | Xms | Xms | N | X KB |
Comparison to Previous
| Metric | Previous | Current | Delta | Status |
|--------|----------|---------|-------|--------|
Delta > 20% regression → flag to CEO.
