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Web Performance Optimization Basics

Explains the basic techniques for making your website faster.

This article was automatically translated from the original Japanese version and may contain mistranslations. Please refer to the Japanese original for the most accurate wording.

Here’s how to improve your website’s performance.

Core Web Vitals

Let’s break down the key metrics defined by Google.

LCP (Largest Contentful Paint)

This is the time it takes for the page’s main content to appear.

FID (First Input Delay)

This is how quickly the page responds to the user’s first interaction.

CLS (Cumulative Layout Shift)

This measures how much the page layout shifts while it’s loading.

Image Optimization

Images often make up a large portion of a page’s total size.

Next-Gen Formats

By using WebP or AVIF, you can significantly reduce file sizes.

Summary

Performance optimization is something you need to keep working on.

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