If your site loads slowly, visitors leave before it finishes loading.
53% of visitors abandon pages that take over 3 seconds to load. Google also penalizes slow sites in rankings.
Common issues: Large unoptimized images, too many requests, unoptimized code, no caching, poor hosting, no content delivery network.
How to fix: Compress images, remove unused CSS/JavaScript, enable caching, enable GZIP, use a CDN, upgrade hosting.