Web Development Intermediate

What is Web Performance Optimization?

Techniques to make websites load faster and respond more quickly, improving user experience and search engine rankings.

Web performance optimization covers reducing page load time, time to interactive, and perceived performance. Key techniques include image optimization (WebP format, responsive images, lazy loading), CSS/JS minification and bundling, critical CSS inlining, code splitting, browser caching with proper Cache-Control headers, CDN usage, Gzip/Brotli compression, reducing DNS lookups, preconnect/preload hints, and server-side rendering. Core Web Vitals (LCP, FID/INP, CLS) are Google's performance metrics affecting SEO rankings. Tools like Lighthouse, PageSpeed Insights, and WebPageTest measure and recommend improvements. Every 100ms of latency can reduce conversion rates.

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Related Terms

Google's metrics for measuring user experience quality, including loading speed, interactivity, and visual stability of web pages.

Brotli Compression

A modern compression algorithm developed by Google that achieves better compression ratios than Gzip for web content delivery.

Web Font Optimization

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

SEO (Search Engine Optimization)

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

A property where performing an operation multiple times produces the same result as performing it once.

An HTML element that tells search engines which URL is the preferred version of a page when duplicate or similar content exists at multiple URLs.

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