https://time-friend.com/en/tags/pwa/Recent content in PWA on Time FriendHugoen-GBWed, 29 Jul 2026 15:15:07 +0800https://time-friend.com/en/archive/blog-architecture-service-worker/Tue, 08 Jul 2025 15:30:00 +0000https://time-friend.com/en/archive/blog-architecture-service-worker/<p>PWA is a buzzword. For this blog, PWA means two things: manifest.json and Service Worker. manifest.json tells the browser &ldquo;this is an app&rdquo;, Service Worker makes it work offline.</p> <p>This article focuses on Service Worker since it&rsquo;s the complex part. manifest.json is straightforward, covered at the end.</p> <h1 id="what-is-service-worker">What is Service Worker</h1> <p>A Service Worker is a script that runs in the background of your browser. It&rsquo;s independent of the web page, working silently behind the scenes.</p>