Progressive Web Apps (PWA) - From Beginner to Expert

Explore quotes from pwa experts on elevating user experience with native features. Upgrade a web site to a pwa and feel like a native app with no browser chrome.

Learn how to migrate to https by generating a certificate signing request, installing intermediates, and enforcing https across all assets, links, and redirects to boost security and search rankings.

Learn how the web manifest defines metadata for PWAs, including name, short name, colors, and icons, to control home screen and splash visuals and enable add-to-home-screen prompts.

Set the launch background color for the homescreen load to improve perceived speed. Align the theme color with your brand to harmonize the browser chrome and status bar.

Learn how web manifest orientation controls whether a progressive web app renders in portrait or landscape, when to lock orientation, and how responsive design keeps users happy.

Define a scope in the web manifest to ensure urls load in the progressive web app's full screen or standalone mode, while external links open in a browser tab.

Intercept and log the before install prompt (add to homescreen) using a service worker and an event listener, and handle the user choice outcome for analytics.

Explore how the app shell caches core assets: HTML, CSS, JavaScript, fonts, and images to accelerate the first meaningful paint. Rely on service workers for pre-caching and offline performance.

Identify critical path assets such as header, footer, layouts, CSS, scripts, and images to build a resilient shell, while caching with service workers for offline reliability.

Evaluate when to use an app shell versus full pre-rendering by analyzing small static sites and large dynamic sites, leveraging service workers and caching for performance.

Explore advanced app shell concepts by implementing pre-rendered HTML, critical CSS, JavaScript, images, and fonts, and mastering granular service worker caching with far-future cache expiration and MD5-hash file naming.

Explore the fetch API and its promise-based requests, including headers and body objects for service workers. Learn how feature detection and Can I Use guide Safari and IE compatibility.

Learn a basic fetch example: perform a get to a local API with a query string, handle the JSON response using then, check status 200, and debug results.

Identify the three response types: basic, cors, and opaque, and understand their access rules, security implications, and how service workers cache cross-origin images, while fetch cannot manipulate opaque data.

Explore why the web fell short with HTML5, examining perceived slow performance, limited offline capabilities, and complex caching, and show how service workers and progressive web apps address these gaps.

Explore how service workers empower progressive web apps with caching, offline experiences, background synchronization, and native push notifications, boosting web performance beyond the UI thread.

Learn how service workers improve the web with offline-first caching and shared data, and review current browser support across Chrome, Firefox, Android, Windows 10, and Safari considerations.

Walk through registering a service worker and triggering install and activate events to observe the lifecycle in chrome dev tools.

Learn the service worker lifecycle, including install, activate, and update flows, with skip waiting and controller changes, plus practical use of clients.claim and multi-tab scenarios.

Activate the service worker by understanding when it controls clients, employ clients.claim and skip waiting to activate immediately, and clean up previous caches during the activate event.

Learn how to activate and update a news service worker using skip waiting, handle install and activate events, manage registrations, and unregistering with developer tools for debugging and lifecycle insights.