Progressive Web App.

A Progressive Web App (PWA) is a website that uses modern web technologies—Service Workers, Web App Manifest, HTTPS—to deliver app-like experiences: installability on home screens, offline functionality, push notifications, fast loading, and reliable performance regardless of network conditions. PWAs blur the line between websites and native apps, offering many app benefits without requiring App Store distribution.

PWAs and SEO

PWAs are generally SEO-friendly because their content is served over standard URLs that are crawlable and indexable by search engines. The Service Worker (the script that enables offline functionality) can interfere with crawling if not correctly configured to allow Googlebot to bypass caching and access live content. Proper Service Worker implementation—using network-first strategies for important pages—ensures crawlability isn't compromised.

PWA Performance Benefits

PWAs are particularly valuable for improving Core Web Vitals on repeat visitors: caching assets through Service Workers dramatically reduces LCP on return visits; precaching critical resources improves Time to Interactive; and offline functionality prevents users from being stranded when connectivity drops. For e-commerce and high-frequency-use applications, PWA implementation typically produces measurable improvements in engagement metrics and conversion rates.