Google Consent Mode Explained (React + TypeScript)

Privacy-First Analytics for Modern Web Apps (Part 2) To address the data-loss problem (see Part 1), Google introduced Consent Mode. The goal is to allow analytics tags to load before consent, but with restricted behaviour. What Advanced Consent Mode does With Advanced Consent Mode: User visits site ↓ Google tag loads ↓ Consent state = denied ↓ Cookieless pings sent These pings may contain: page URL timestamp browser / device type approximate region But they do not set cookies. Google uses these signals to estimate user behaviour. Basic vs Advanced Consent Mode Basic consent mode: Google Analytics loads only after consent Advanced consent mode: Google tag loads immediately with restricted tracking Implementing Basic Consent Mode (React + TypeScript) Example cookie consent logic: import ReactGA from "react-ga4" export function enableAnalytics() { const GA_ID = process.env.REACT_APP_GA_ID if (GA_ID) { ReactGA.initialize(GA_ID) } } Called when the user clicks Accept. Implementing Advanced