# Metrical Digital

> Metrical runs a real-browser performance test on any public URL, measures Core Web Vitals (LCP, INP, CLS, FCP, TTFB), and returns a prioritised, plain-English action plan of what to fix first.

Every page listed below is also available as Markdown. Send `Accept: text/markdown`, or append `.md` to the path (for example `/pricing.md`). Responses set `Vary: Accept, Accept-Encoding`.

## Docs

- [Metrical home](https://metrical.digital/index.md): What Metrical does, how a scan works, and the Core Web Vitals it measures.
- [About Metrical](https://metrical.digital/about.md): Why Metrical exists and how it differs from Lighthouse and PageSpeed Insights.
- [Pricing](https://metrical.digital/pricing.md): Free, Starter, and Pro plans with scan allowances, features, and prices in EUR.
- [FAQ](https://metrical.digital/faq.md): How scans work, what Core Web Vitals are, plan limits, refunds, privacy, and support.
- [Metrical Digital API — developer documentation](https://metrical.digital/developers.md): Live HTTP endpoints, authentication, the OpenAPI specification, and the planned public API.
- [Contact](https://metrical.digital/contact.md): Support email, bug reports, and API early-access requests.
- [Blog](https://metrical.digital/blog.md): Articles on web performance and diagnosing slow websites.

## Developer resources

- [Metrical Digital API documentation](https://metrical.digital/developers): Endpoint reference, authentication model, report export formats, versioning policy, and API early access.
- [Metrical Digital API index](https://metrical.digital/api): JSON entry point: every API version with its lifecycle state, the endpoints in the current version, and the deprecation policy.
- [OpenAPI 3.1 specification](https://metrical.digital/openapi.json): Machine-readable description of the live HTTP endpoints on metrical.digital.
- [API catalog](https://metrical.digital/.well-known/api-catalog): RFC 9727 linkset pointing at the OpenAPI description and human documentation.
- [Crawler policy](https://metrical.digital/robots.txt): Robots Exclusion Protocol rules. All major AI agents are explicitly allowed.
- [Sitemap](https://metrical.digital/sitemap.xml): Every indexable URL with last-modified dates.

## Articles

- [Why Your WordPress Site Is Slow](https://metrical.digital/blog/why-your-wordpress-site-is-slow.md): Real data from 500+ WordPress site scans: the most common causes of slow load times, ranked by frequency and impact

## Optional

- [Full content corpus](https://metrical.digital/llms-full.txt): Every page above concatenated as Markdown, for one-request ingestion.
- [Privacy policy](https://metrical.digital/privacy): How scan data and account data are handled.
- [Terms of service](https://metrical.digital/terms): Terms governing use of Metrical.