Rafael Coelho

Full-stack developer and creator of Analisa

Hi, I'm Rafael. I'm a full-stack developer and the creator of Analisa, a cookieless analytics tool built to answer two questions: where visitors come from, and whether they become customers. Here I write about what I learn while building the product: measurement, privacy, performance and conversion, always with examples you can apply the same day. On my personal site I share what I learn about programming, hands-on challenges and tech careers.

Articles

ConversionHow to measure conversion by channel (and find out where your customers come from)Define your conversion, understand attribution (first vs last touch), set up goals and funnels in Analisa and read results by channel without small-sample traps.

Rafael CoelhoOctober 2, 20269 min read

Privacy & complianceGoogle Analytics, consent and privacy laws (GDPR & LGPD)What the GDPR, the ePrivacy cookie rule and Brazil's LGPD say about analytics, why GA4 usually needs consent, and what cookieless analytics changes (and what it doesn't).

Rafael CoelhoOctober 2, 202611 min read

Acquisition & UTMUTM parameters: the complete guide (with copy-paste examples)What each UTM parameter means, a naming convention that won't break your reports, and ready-made links for Google Ads, Meta, newsletters, LinkedIn, WhatsApp and QR codes.

Rafael CoelhoOctober 2, 20269 min read

PerformanceINP: what it is, why it replaced FID and how to improve itUnderstand Interaction to Next Paint (INP), why it replaced FID in Core Web Vitals, how to find slow interactions and what to fix in your JavaScript to improve it.

Rafael CoelhoOctober 2, 20268 min read