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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…