Web

How the Web Works

Follow a request from typing a URL to seeing a page — the big picture every developer needs

HTTP Methods & Status Codes

Speak the language of the web — verbs that express intent and codes that report outcomes

HTTPS & TLS

How encryption, certificates, and the TLS handshake keep web traffic private and trusted

DNS

How human-friendly domain names get translated into the IP addresses computers use

Browser Rendering

How the browser turns HTML, CSS, and JavaScript into the pixels you see

Browser DevTools

Inspect, debug, and profile any website with the tools built into your browser

Caching & CDNs

Serve content faster by storing copies closer to users and skipping needless downloads