Converting your WordPress site to a PWA can positively impact your site's SEO. Since PWAs are designed to load quickly and efficiently, Google and other search engines may reward your site with better search rankings. Additionally, PWA features such as custom offline page accessibility and responsive design can enhance user experience, indirectly contributing to improved SEO performance. The improvement of real-time Core Web Vitals is also possible due to the user loading the static files from the cache from the browser.