Website speed affects conversions, search visibility and how professional a brand feels. The good news is that a handful of changes deliver most of the improvement, and they can be applied in a sensible order.
Start with images, which are usually the heaviest assets. Serve images at the size they are displayed, use modern formats such as WebP or AVIF, lazy-load images below the fold and always specify dimensions to prevent layout shift.
Next, look at fonts. Limit the number of families and weights, host them efficiently and use a font-display strategy so text appears immediately with a fallback rather than staying invisible while the font loads.
Then reduce JavaScript. Remove unused libraries, split code by route, load third-party scripts such as analytics and chat widgets after the page is interactive, and prefer server rendering for content that does not need client-side interactivity.
Caching and delivery come next. Serve static files with long cache lifetimes and fingerprinted file names, enable compression, and use a content delivery network so assets travel a shorter distance to your visitors.
Measure what real people experience. Track Largest Contentful Paint, Interaction to Next Paint and Cumulative Layout Shift using field data, and set a performance budget so new features cannot quietly make the site slower.
Finally, make performance a habit. Add checks to your deployment process, review the biggest pages regularly and treat a slow regression like any other bug. Small, consistent improvements compound into a noticeably faster site.