7 docs tagged with "performance"

Integrate Open Graph, Twitter Cards, SEO standards, and performance configurations for complete production-ready document headers.

Optimize JavaScript delivery in document headers using the script tag alongside async, defer, and module attributes to prevent parsing delays.

Master the link tag for external stylesheets, canonical URLs, preloading, prefetching, and DNS preconnecting optimizations.

Learn how the width and height attributes stop layout shift in HTML. Understand aspect ratio, how browsers reserve space, responsive sizing with CSS, the aspect-ratio property, high-density screens, and Cumulative Layout Shift on CodeHarborHub.

Learn how to lazy load images in HTML with the loading attribute. Understand which images to lazy load and which not to, protect your main image, reserve space with width and height, lazy load iframes, use IntersectionObserver, and measure the results on CodeHarborHub.

Learn which image format to use on the web. Compare JPEG, PNG, GIF, WebP, AVIF and SVG, understand lossy and lossless compression, transparency and animation, browser support, optimization tools, metadata privacy, and how to choose the best format on CodeHarborHub.

Learn the big picture of responsive images in HTML. Understand screen sizes and pixel density, flexible images with CSS, resolution switching with srcset, art direction with the picture element, fluid galleries with CSS grid, and how to test what the browser downloads on CodeHarborHub.