Image Optimization Interview Questions

Next.js Image component is an extension of HTML <img> tag. Provides automatic image optimization. Supports lazy loading, responsive sizing, and modern image formats. Handles image optimization on-demand.

Import Image from 'next/image'. Add src, alt, width, and height props. Component optimizes and serves images automatically. Example: <Image src='/img.png' alt='image' width={500} height={300} />

Reduces image file size, improves page load speed, supports responsive images, optimizes for different devices, reduces bandwidth usage, improves Core Web Vitals scores.

Images load only when they enter viewport. Reduces initial page load time. Uses loading='lazy' attribute automatically. Supports intersection observer API.

Images adapt to different screen sizes. Uses sizes prop for viewport-based sizing. Supports srcset generation. Implements responsive design patterns.

Use quality prop to set compression level. Default is 75. Balance between quality and file size. Support different quality levels for different images.

Shows blurred version of image while loading. Use placeholder='blur' prop. Supports blurDataURL for custom blur. Improves perceived performance.

Configure domains in next.config.js. Use loader prop for custom image service. Support remote image optimization. Handle remote image domains.

Import images as modules. Get width and height automatically. Support webpack optimization. Handle static image assets.

Support WebP, AVIF formats. Use formats prop for specific formats. Handle browser compatibility. Implement format strategies.

Use different images for different screen sizes. Handle responsive images. Support art direction patterns. Implement device-specific images.

Use priority prop for LCP images. Handle critical images. Support preload strategies. Implement performance optimization.

Create custom image loaders. Handle external image services. Support custom optimization. Implement loader strategies.

Configure cache headers. Handle browser caching. Support CDN caching. Implement caching strategies.

Handle SVG optimization. Support inline SVGs. Handle SVG sprites. Implement SVG optimization strategies.

Implement alt text. Handle role attributes. Support screen readers. Implement accessibility patterns.

Handle loading errors. Support fallback images. Implement error states. Handle error reporting.

Load images dynamically. Handle dynamic sources. Support runtime optimization. Implement dynamic patterns.

Create image component tests. Handle visual testing. Support integration testing. Implement test patterns.

Monitor loading metrics. Handle performance optimization. Support performance tracking. Implement loading strategies.

Create complex optimization strategies. Handle different use cases. Support optimization patterns. Implement advanced techniques.

Implement batch processing. Handle multiple images. Support processing queues. Implement scaling strategies.

Create image transformations. Handle resizing, cropping. Support filters and effects. Implement transformation pipelines.

Implement secure image handling. Handle access control. Support secure URLs. Implement security measures.

Track image performance metrics. Handle monitoring integration. Support analytics. Implement monitoring strategies.

Implement deployment strategies. Handle CDN integration. Support caching systems. Implement deployment patterns.

Create image component documentation. Generate API docs. Support example usage. Implement documentation updates.

Test optimization performance. Handle metric validation. Support automation testing. Implement test strategies.

Design scalable image systems. Handle architecture patterns. Support system organization. Implement design principles.