Site Performance Endpoints

8 endpoints available

Performance analysis covering compression support (gzip, brotli, zstd), cache configuration, HTTP/2 and HTTP/3 adoption, server response times, resource hints, redirect chains, page weight breakdown, and composite performance scoring. Essential for DevOps, SREs, and performance engineers.

Compression Check

/v1/domain/compression

Analyze gzip/brotli/zstd compression support

Cache Headers

/v1/domain/cache

Analyze caching configuration

HTTP Version

/v1/domain/http-version

Check HTTP/2 and HTTP/3 support

Response Time

/v1/domain/response-time

Measure server response latency

Resource Hints

/v1/domain/resource-hints

Find preconnect, prefetch, and preload hints

Redirect Chain

/v1/domain/redirect

Trace HTTP redirect chain

Page Weight

/v1/domain/page-weight

Analyze page size and resource breakdown

Performance Score

/v1/score/performance

Composite speed score from 6 optimization factors

Related Standards & References

Learn more about the protocols and standards behind these endpoints.

Web Vitals

Google Core Web Vitals metrics and thresholds

MDN HTTP Caching

HTTP caching best practices

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