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Website Speed Optimization

Speed up your website and improve Core Web Vitals. Loading speed analysis and optimization for better Google rankings and higher conversions.

Speed optimization

Website speed directly impacts conversions, user satisfaction, and search engine rankings. Every extra second of loading time increases the chance that a visitor will leave. I optimize websites to load as fast as possible on all devices.

Speed statistics

Why speed matters

  • 53% of users abandon a page that takes longer than 3 seconds to load
  • Google uses Core Web Vitals as a ranking factor
  • A faster website means higher conversion rates and lower bounce rates
  • Improving LCP by 1 second can increase conversions by 27%

What I optimize

Images and media

Images and media

Images are the most common cause of slow loading. I ensure proper formats (WebP, AVIF), responsive sizes, lazy loading, and compression without visible quality loss.

Code and assets

Code and assets

CSS and JavaScript minification and bundling, removal of unused code (tree-shaking), proper resource loading order, and elimination of render-blocking resources.

Caching and CDN

Caching and CDN

Proper browser caching strategy setup, CDN implementation or optimization, transfer compression (Brotli, Gzip), and HTTP header optimization.

Rendering and interactivity

Rendering and interactivity

Core Web Vitals optimization (LCP, INP, CLS), minimizing layout shifts, proper font loading without flashing, and critical rendering path optimization.

Server side

Server side

Server response time optimization (TTFB), server-side caching, database query optimization, and proper HTTP/2 or HTTP/3 configuration. Choosing the right architecture (SSR, SSG) plays a key role.


How I measure performance

Performance measurement tools

Tools and metrics

I use a combination of tools for a complete picture of website performance:

  • Lighthouse for comprehensive performance scoring
  • PageSpeed Insights for real user data (CrUX)
  • WebPageTest for detailed loading waterfall analysis
  • Chrome DevTools for profiling and debugging
  • Core Web Vitals (LCP, INP, CLS, TTFB) as the primary user performance indicators

Optimization process

Measurement and analysis

I measure the current state using Lighthouse, PageSpeed Insights, and WebPageTest. I identify the biggest performance bottlenecks and determine which Core Web Vitals metrics need improvement.

Optimization plan

I compile a list of improvements sorted by impact and complexity. I focus first on changes that bring the biggest improvement with the least effort. Each item has a clear expected impact on a specific metric.

Implementation

I carry out optimizations while continuously measuring improvements. From image compression and caching setup to code refactoring and server optimization. Emphasis on ensuring changes don't break functionality.

Verification and documentation

I compare before and after results, document all changes made. I prepare recommendations for maintaining performance going forward and set up monitoring.


Who is this service for

  • Websites with slow loading that are losing visitors and conversions
  • E-commerce sites where every extra second reduces revenue
  • Companies after a website redesign that need performance tuning
  • Web applications with demanding frontends
  • Websites with poor Core Web Vitals scores affecting search rankings
Dealing with a similar topic at your company?

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<SH/>Standa Horváth Copyright © 2015-2026 Fyzická osoba zapsaná v Živnostenském rejstříku od 6. 3. 2015,
evidovaná magistrátem města Liberce. IČO: 03866068