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Why is my lighthouse performance-score inconsistent between tests?

Asked on Tuesday, Sep 23, 2025

Lighthouse performance scores can vary due to several factors, including network conditions, device performance, and server response times. These fluctuations are common and can affect the consistency…

How do http3 and quic protocols affect core-web-vitals metrics?

Asked on Monday, Sep 22, 2025

HTTP/3 and QUIC protocols can significantly enhance Core Web Vitals by reducing latency and improving connection reliability, which directly benefits metrics like LCP and FID. These protocols use mult…

What’s the benefit of serving images in webp or avif formats?

Asked on Sunday, Sep 21, 2025

Serving images in modern formats like WebP or AVIF can significantly enhance website performance by reducing image file sizes without compromising quality. This leads to faster load times and improved…

What causes a slow fcp and how can I optimize it efficiently?

Asked on Saturday, Sep 20, 2025

A slow First Contentful Paint (FCP) can be caused by render-blocking resources, inefficient server response times, or large CSS and JavaScript files. Optimizing FCP involves minimizing these bottlenec…

How do I improve fid by deferring non-critical async-js?

Asked on Friday, Sep 19, 2025

Improving First Input Delay (FID) involves ensuring that the main thread is free to respond to user interactions quickly. Deferring non-critical JavaScript can help by allowing the browser to prioriti…

Should I use brotli or gzip compression for better performance?

Asked on Thursday, Sep 18, 2025

Using Brotli compression generally provides better performance than Gzip due to its higher compression ratios, which can lead to faster page load times by reducing the size of transmitted files. Examp…

Why does my site have a large total-blocking-time (tbt)?

Asked on Wednesday, Sep 17, 2025

Total Blocking Time (TBT) measures the time during which the main thread is blocked, preventing user interactions. A large TBT often indicates that your site has long-running tasks or heavy JavaScript…

How can I use lazy-loading to improve lcp and cls metrics?

Asked on Tuesday, Sep 16, 2025

Lazy-loading can significantly improve your Largest Contentful Paint (LCP) and Cumulative Layout Shift (CLS) metrics by deferring the loading of off-screen images and iframes until they are needed, re…