Technical & SEO Glossary

Essential terms for understanding technical SEO, web development, and growth engineering. Searchable glossary with practical examples.

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Core Web Vitals

SEO

A set of specific factors that Google considers important in a webpage's overall user experience. Consists of LCP (Largest Contentful Paint), FID (First Input Delay), and CLS (Cumulative Layout Shift).

Example: A page with LCP < 2.5s, FID < 100ms, and CLS < 0.1 meets good Core Web Vitals thresholds.

LCP (Largest Contentful Paint)

Performance

Measures loading performance by marking the time when the largest content element becomes visible in the viewport. Good LCP scores are 2.5 seconds or faster.

Example: If your hero image takes 3.2 seconds to load, your LCP is 3.2s (needs improvement).

Schema Markup

SEO

Structured data vocabulary that helps search engines understand your content better. Implemented using JSON-LD, Microdata, or RDFa formats.

Example: Adding Organization schema to your contact page helps Google display rich snippets.

Technical SEO

SEO

The process of optimizing a website's technical aspects to improve its search engine visibility. Includes site speed, mobile-friendliness, crawlability, and indexability.

Example: Implementing proper meta tags, fixing broken links, and optimizing Core Web Vitals.

CLS (Cumulative Layout Shift)

Performance

Measures visual stability by quantifying how much visible content shifts during page load. Good CLS scores are less than 0.1.

Example: Images loading without defined dimensions cause layout shifts and poor CLS scores.