AlexWebLab

Explore a wide range of web development topics, from JavaScript to React and beyond, and uncover valuable insights to enhance your skills.

Latest 2 articles:

Content Security Policy: What It Is and How to Implement It

Security & Architecture

A Content Security Policy tells the browser which sources it is allowed to load resources from. It is one of the most effective defences against XSS attacks — and one of the most poorly understood headers in web security.

The Browser Rendering Pipeline (Full Picture)

Performance

From the moment you type a URL to the moment pixels appear on screen, the browser executes a precise multi-stage pipeline. Understanding every stage — and what can interrupt each one — is the foundation for all frontend performance work.