Optimize WordPress images for fast loading and better user experience. Large image files slow performance; proper sizes enhance speed, storage, and SEO. WordPress generates default sizes: Thumbnail (150×150), Medium (300×300), Large (1024×1024), and Full (original). Adjust sizes under Settings > Media. Recommended dimensions include 1200×800 for posts and 1920×1080 for headers. Use tools for analysis, compression, and appropriate formats (WebP, AVIF). Enable responsive images with the srcset attribute. Manage extra image sizes with plugins. Maintain high-resolution compatibility by uploading larger images. Best practices include renaming files, organizing the media library, using lazy loading, and considering an image CDN like Jetpack Boost for optimized performance.
WordPress Image Sizes: Recommended Dimensions & Resolutions
