Web Development Beginner

What is Web Accessibility (a11y)?

The practice of designing websites that can be used by people with disabilities, following WCAG guidelines.

Web accessibility ensures websites are usable by everyone, including people with visual, auditory, motor, and cognitive disabilities. WCAG (Web Content Accessibility Guidelines) defines standards at levels A, AA (common target), and AAA.

Key practices include semantic HTML, alt text for images, keyboard navigation, sufficient color contrast, ARIA attributes, screen reader compatibility, and captions for media. Accessibility also benefits SEO and general usability.

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JavaScript Object Notation — a lightweight data interchange format that is easy for humans to read and machines to parse.

SEO (Search Engine Optimization)

The practice of optimizing websites to rank higher in search engine results, increasing organic traffic.

Static Site Generator (SSG)

A tool that generates a complete static HTML website from templates and content at build time, requiring no server-side processing.

Server-Sent Events (SSE)

A web technology enabling servers to push real-time updates to browsers over a single HTTP connection, simpler than WebSockets.

Content Negotiation

An HTTP mechanism where client and server agree on the best representation of a resource based on format, language, or encoding preferences.

Web Font Optimization

Techniques for loading custom fonts efficiently to minimize their impact on page load performance and visual stability.

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