Web Development Guides

Web development is the planning, coding, testing and running of websites and applications that work in a web browser. It has two main layers: the interface users see and interact with (frontend), and the background made up of the server, database and APIs that process data (backend). Hosting, security, performance and maintenance are part of web development too.

A website is built in steps: defining its purpose and audience, planning the page structure and content, design, coding, testing and launch. Website builders and content management systems such as WordPress offer a quick start; projects that need custom workflows, high performance or integrations are coded from scratch. After launch, content updates, security patches and performance monitoring continue.

The most important things to consider when building a website are speed, mobile friendliness, search engine readiness, security and accessibility. Pages should look right and load fast on every screen, title and description tags should be set up correctly, the whole site should be served over HTTPS, and content and forms should be usable by everyone, including people with disabilities. An admin panel for easy content updates and regular backups should also be planned from the start.

Responsive web design means a website adapts automatically to different screen sizes such as phones, tablets and desktops. The same page changes its layout, font sizes and images based on the screen width, so no separate mobile site is needed. Because Google indexes sites based on their mobile version, responsive design also matters for search visibility.

The part of a website you see in the browser is written in HTML (structure), CSS (appearance) and JavaScript (interaction); these three are the foundation of every website. On the server side, languages such as PHP, JavaScript (Node.js), Python, C# or Java are used. Today interfaces are mostly built with libraries such as React, and full-stack projects with frameworks such as Laravel or Next.js; the choice depends on the project and the team.

Core Web Vitals are the three metrics Google uses to measure a page's user experience: LCP (how long the largest content takes to load), INP (how quickly the page responds to interactions) and CLS (layout shifts while the page loads). Google recommends keeping LCP under 2.5 seconds, INP under 200 milliseconds and CLS under 0.1 for a good experience. You can track them with real user data in Search Console and PageSpeed Insights.