Ask anything about Performance.

Get instant answers with code examples.

Search Questions

Search Tags

Both Performance questions and answers are generated daily through our proprietary AI-assisted system. Purchase tags to help expand the Q&A Network.

Latest Questions

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…