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Get Started Free →Use when auditing slow page loads, heavy assets, or rendering delays related to Minimize critical request chains. Verify the actual bottleneck in DevTools, Lighthouse, or field data before recommending changes.
.claude/skills/thedaviddias-critical-request-chains/SKILL.md| Test case | Without → With | Effect | Δ tokens | Δ turns |
|---|---|---|---|---|
| case-12 | ✓→✗ | ▼ Worse | -16% | 0% |
| case-01 | ✓→✓ | ＝ Same ✓ | 48% | 0% |
| case-02 | ✓→✓ | ＝ Same ✓ | 43% | 0% |
| case-03 | ✓→✓ | ＝ Same ✓ | 53% | 0% |
| case-04 | ✓→✓ | ＝ Same ✓ | 2% | 0% |
Long chains of dependent requests delay the initial rendering of the page, as each resource must wait for its parent to be fetched and processed.
preload hints for essential assets found deep in the chainIdentify long chains of dependent requests that block the critical rendering path using Lighthouse or WebPageTest.
Flatten the request chain by inlining critical resources or using preload hints for essential assets.
Explain how critical request chains impact the Time to First Paint and how to optimize the rendering path.
Review the routes, assets, and loading behavior that affect Minimize critical request chains. Flag exact files, requests, or rendering steps that add unnecessary network, CPU, or layout cost, and describe the measurement method used to confirm the issue.
For full implementation details, code examples, and framework-specific guidance, see references/rule.md.
Rule page: https://frontendchecklist.io/en/rules/performance/critical-request-chains
| Case | Status | Duration (ms) | Turns | Tokens | Tool calls | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Without | With | Δ | Without | With | Δ | Without | With | Δ | Without | With | Δ | ||
case-01 | pass→pass | 2,979 | 2,597 | -13% | 1 | 1 | 0% | 520 | 768 | +48% | 0 | 0 | — |
case-02 | pass→pass | 3,899 | 4,172 | +7% | 1 | 1 | 0% | 704 | 1,010 | +43% | 0 | 0 | — |
case-03 | pass→pass | 3,087 | 2,780 | -10% | 1 | 1 | 0% | 554 | 846 | +53% | 0 | 0 | — |
case-04 | pass→pass | 14,445 | 10,094 | -30% | 1 | 1 | 0% | 2,300 | 2,344 | +2% | 0 | 0 | — |
case-05 | pass→pass | 11,698 | 11,316 | -3% | 1 | 1 | 0% | 2,211 | 2,467 | +12% | 0 | 0 | — |
case-06 | pass→pass | 6,333 | 5,332 | -16% | 1 | 1 | 0% | 1,115 | 1,269 | +14% | 0 | 0 | — |
case-07 | pass→pass | 10,861 | 9,239 | -15% | 1 | 1 | 0% | 2,052 | 2,055 | +0% | 0 | 0 | — |
case-08 | fail→fail | 11,535 | 8,410 | -27% | 1 | 1 | 0% | 1,992 | 1,647 | -17% | 0 | 0 | — |
case-09 | pass→pass | 8,603 | 8,825 | +3% | 1 | 1 | 0% | 1,471 | 1,838 | +25% | 0 | 0 | — |
case-10 | pass→pass | 7,821 | 5,166 | -34% | 1 | 1 | 0% | 1,496 | 1,191 | -20% | 0 | 0 | — |
case-11 | pass→pass | 10,669 | 11,426 | +7% | 1 | 1 | 0% | 2,360 | 2,400 | +2% | 0 | 0 | — |
case-12 | pass→fail | 10,103 | 7,321 | -28% | 1 | 1 | 0% | 1,792 | 1,506 | -16% | 0 | 0 | — |
case-13 | pass→pass | 9,619 | 9,879 | +3% | 1 | 1 | 0% | 2,130 | 2,408 | +13% | 0 | 0 | — |
case-14 | pass→pass | 17,660 | 11,696 | -34% | 1 | 1 | 0% | 2,939 | 2,244 | -24% | 0 | 0 | — |
case-15 | pass→pass | 2,508 | 4,477 | +79% | 1 | 1 | 0% | 537 | 1,093 | +104% | 0 | 0 | — |
case-16 | pass→pass | 4,897 | 4,008 | -18% | 1 | 1 | 0% | 927 | 968 | +4% | 0 | 0 | — |
case-17 | pass→pass | 10,469 | 7,399 | -29% | 1 | 1 | 0% | 1,888 | 1,709 | -9% | 0 | 0 | — |
case-18 | pass→pass | 10,518 | 9,387 | -11% | 1 | 1 | 0% | 2,008 | 1,765 | -12% | 0 | 0 | — |
case-19 | pass→pass | 11,180 | 8,011 | -28% | 1 | 1 | 0% | 2,220 | 1,907 | -14% | 0 | 0 | — |
case-20 | pass→pass | 10,953 | 8,779 | -20% | 1 | 1 | 0% | 1,925 | 1,785 | -7% | 0 | 0 | — |
case-21 | pass→pass | 10,962 | 13,213 | +21% | 1 | 1 | 0% | 2,203 | 2,363 | +7% | 0 | 0 | — |
case-22 | pass→pass | 8,409 | 10,052 | +20% | 1 | 1 | 0% | 1,409 | 1,978 | +40% | 0 | 0 | — |
DecimalAI ran this skill against gemini-3.6-flash twice over the same eval suite — once with the skill loaded and once without — and compared the two runs case by case. 22 cases were attempted. The headline lift of -100 percentage points is the difference between those two pass rates over the 22 comparable cases. 1 case got worse with the skill loaded, and it is included in that figure.
Other measured skills in the registry, with their headline benchmark lift.