Changing your website theme can affect your SEO if not done carefully. Some themes load faster and are better designed for mobile phones, while others are slower or use messy coding. Search engines like Google prefer websites that load quickly and are easy to navigate. If the new theme changes your headings, page structure, or removes important content, it can reduce your ranking. Before switching, test the new theme on a sample page to see how it looks and performs. Also, make sure your old links, titles, and images remain the same. A clean design with simple navigation usually performs better. Updating your theme can help your site look modern, but always check its speed and structure afterward. Have you ever noticed a drop or improvement in your rankings after a theme change?