Vendor / platform
Google's web-developer guidance — Search Essentials, Core Web Vitals, structured-data rich results, and Lighthouse — sets the de-facto baseline for SEO and performance on the web. Not a standards body, but enforced via search-ranking and ad-platform behavior.
Standards governed by Google
- Core Web Vitals Google's three-metric performance bar: LCP, INP, CLS. Affects rankings and is the closest thing to a universal performance standard.
- Google Search Essentials Google's umbrella ranking-and-eligibility guide — replaced the old `Webmaster Guidelines` in 2022. Three pillars: technical requirements, spam policies, and the helpful-content / E-E-A-T quality bar.
- hreflang Tell Google which language and region each version of your page targets. Mistakes here are the #1 reason multi-language sites underperform — wrong country, wrong content, wrong inventory.
- Interaction to Next Paint (INP) Replaced FID as a Core Web Vital in March 2024. Measures responsiveness across the full page lifecycle — clicks, taps, key presses — not just the first interaction. ≤200ms is the bar.
- Largest Contentful Paint (LCP) Time until the largest above-fold element renders — usually the hero image or H1. ≤2.5s at the 75th percentile is the `good` threshold; >4s is poor.
- Robots meta + X-Robots-Tag Page-level indexing controls — `noindex`, `nofollow`, `nosnippet`, `max-image-preview`. Distinct from robots.txt, which only blocks crawling.