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Get Started Free →Use when auditing slow page loads, heavy assets, or rendering delays related to Enable HTTP/2 or HTTP/3. Verify the actual bottleneck in DevTools, Lighthouse, or field data before recommending changes.
| Test case | Without → With | Effect | Δ tokens | Δ turns |
|---|---|---|---|---|
| case-01 | ✗→✓ | ▲ Improved | 22% | 0% |
| case-02 | ✓→✗ | ▼ Worse | -15% | 0% |
| case-03 | ✓→✓ | = Same ✓ | -23% | 0% |
| case-04 | ✓→✓ | = Same ✓ | -24% | 0% |
| case-09 | ✓→✓ | = Same ✓ | -10% | 0% |
Modern HTTP protocols significantly reduce the impact of latency and allow multiple resources to be downloaded simultaneously over a single connection, leading to much faster page loads.
Verify that the server is serving resources over HTTP/2 or HTTP/3 using browser DevTools or online checkers.
Enable HTTP/2 or HTTP/3 in your web server (Nginx, Apache) or via a CDN/load balancer.
Explain the advantages of HTTP/2 and HTTP/3 over HTTP/1.1, such as multiplexing and header compression.
Review the routes, assets, and loading behavior that affect Enable HTTP/2 or HTTP/3. 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/http2
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