How do I know if my website needs performance optimization?

Your website likely needs performance optimization if load times are over 3 seconds, Core Web Vitals scores are poor, bounce rates are high, mobile performance is slow, or you're losing conversions due to speed. Use tools like Google PageSpeed Insights to check performance scores. If scores are below 70-80, optimization is needed. Check Core Web Vitals in Google Search Console—if they're 'needs improvement' or 'poor', optimization is essential. High bounce rates often indicate performance issues. Even if your site seems fast, there's usually room for improvement. Performance optimization is an ongoing process, not a one-time fix. Regular audits help identify new issues.