Images on Commentary of Takao

Optimizing Images: WebP vs. AVIF and Responsive Sizes

Tue, 15 Jul 2025 00:00:00 +0900

Introduction

Optimizing image assets is one of the most effective ways to improve web 성능 metrics like Lighthouse scores and LCP (Largest Contentful Paint).

In many web applications, images make up more than half of the total payload size. Slow image loading times directly degrade user experience.

Replacing legacy formats like JPEG and PNG with next-generation formats like WebP and AVIF has become standard practice in modern web development. This article compares these two formats and explains how to configure 반응형, optimized image delivery.

Image Optimization Strategies 2024: AVIF, WebP, and Beyond

Tue, 02 Jul 2024 00:00:00 +0900

Introduction

Images 계정 for over half of the typical webpage’s total weight. As web applications grow more visual, optimizing image delivery has become critical for 성능, user experience, and Core Web Vitals scores. This article explores modern image 최적화 strategies, from next-generation formats to 반응형 delivery techniques.

Image Formats in 2024

The image format landscape has shifted dramatically. Three modern formats now compete for dominance alongside legacy JPEG and PNG.

Next.js Image Optimization: From Setup to Advanced Patterns

Tue, 26 Mar 2024 00:00:00 +0900

Introduction

Images 계정 for over 50% of total webpage bytes on average, making 최적화 essential for 성능. Next.js provides a comprehensive image 최적화 pipeline through the next/image component and its built-in Image 최적화 API. This article covers setup, configuration, and advanced patterns with a focus on Core Web Vitals impact.

The next/image Component

The next/image component extends the HTML <img> element with automatic 최적화 기능: lazy loading, 반응형 srcset generation, width and height enforcement to prevent Cumulative Layout Shift, blur-up placeholders, and automatic format negotiation.