By completing this course, learners will:

• Build installable web apps with native-like UX.

• Implement service workers for offline functionality.

• Add push notifications and background sync.

• Use caching strategies to improve performance.

• Deploy PWAs with HTTPS, manifests, and security best practices.

• Deliver cross-platform apps without app store overhead.

Course Syllabus

Module 1: Introduction to PWAs

• What are Progressive Web Apps?

• PWAs vs native apps vs traditional web apps

• Core building blocks: HTTPS, manifest, service workers

Module 2: App Structure & Manifest

• Web App Manifest setup

• Icons, names, and splash screens

• Browser installability requirements

• Testing install prompts

Module 3: Service Workers

• Introduction to service workers

• Registering and updating service workers

• Handling requests and caching strategies

• Offline-first app design

Module 4: Performance & Caching

• Caching strategies (cache-first, network-first, stale-while-revalidate)

• Asset optimization

• Lazy loading and code splitting

• Auditing with Lighthouse

Module 5: Advanced Features

• Push notifications

• Background sync

• Accessing device features (camera, geolocation)

• Security considerations

Module 6: Integration with Backends

• Connecting PWAs to REST/GraphQL APIs

• Authentication and secure sessions

• Data syncing strategies

• Offline data persistence

Module 7: Testing & Debugging

• Debugging service workers in DevTools

• Testing across browsers and devices

• Lighthouse audits for PWA compliance

• Automating tests with Playwright/Puppeteer

Module 8: Deployment & Publishing

• Hosting PWAs with HTTPS

• CI/CD pipelines for PWAs

• Adding PWA to home screen (iOS & Android)

• Publishing to Microsoft Store and Google Play via Trusted Web Activity

Module 9: Real-World Projects

• Offline-capable to-do list PWA

• Weather app with caching and background sync

• E-commerce PWA with push notifications

• News reader PWA with offline support

Module 10: Best Practices & Future Trends

• Designing PWAs for accessibility

• SEO optimization for PWAs

• PWAs vs hybrid frameworks (Ionic, React Native)

• The future of web apps and cross-platform development

Course Syllabus

Module 1: Introduction to PWAs

• What are Progressive Web Apps?

• PWAs vs native apps vs traditional web apps

• Core building blocks: HTTPS, manifest, service workers

Module 2: App Structure & Manifest

• Web App Manifest setup

• Icons, names, and splash screens

• Browser installability requirements

• Testing install prompts

Module 3: Service Workers

• Introduction to service workers

• Registering and updating service workers

• Handling requests and caching strategies

• Offline-first app design

Module 4: Performance & Caching

• Caching strategies (cache-first, network-first, stale-while-revalidate)

• Asset optimization

• Lazy loading and code splitting

• Auditing with Lighthouse

Module 5: Advanced Features

• Push notifications

• Background sync

• Accessing device features (camera, geolocation)

• Security considerations

Module 6: Integration with Backends

• Connecting PWAs to REST/GraphQL APIs

• Authentication and secure sessions

• Data syncing strategies

• Offline data persistence

Module 7: Testing & Debugging

• Debugging service workers in DevTools

• Testing across browsers and devices

• Lighthouse audits for PWA compliance

• Automating tests with Playwright/Puppeteer

Module 8: Deployment & Publishing

• Hosting PWAs with HTTPS

• CI/CD pipelines for PWAs

• Adding PWA to home screen (iOS & Android)

• Publishing to Microsoft Store and Google Play via Trusted Web Activity

Module 9: Real-World Projects

• Offline-capable to-do list PWA

• Weather app with caching and background sync

• E-commerce PWA with push notifications

• News reader PWA with offline support

Module 10: Best Practices & Future Trends

• Designing PWAs for accessibility

• SEO optimization for PWAs

• PWAs vs hybrid frameworks (Ionic, React Native)

• The future of web apps and cross-platform development

PWA skills prepare learners for roles such as:

• Frontend Developer (modern web apps)

• Full-Stack Engineer (web + mobile)

• Mobile-Web Developer (cross-platform apps)

• UI/UX-Focused Engineer

• Software Engineer (offline-first applications)

PWAs are being widely adopted by startups, SaaS providers, and global companies (Twitter, Starbucks, Pinterest) to deliver engaging, installable web experiences—making PWA skills highly in demand.

1. What is a Progressive Web App (PWA)?
A web application that combines the reach of the web with app-like features such as offline use, push notifications, and installability.

2. What are the core requirements of a PWA?

• Served over HTTPS

• Web App Manifest

• Service Worker for offline caching

3. What is a service worker?
A script that runs in the background to handle caching, offline support, and push notifications.

4. How do PWAs differ from native apps?
PWAs run in browsers, are cross-platform, don’t require app store approval, but can still be installed like native apps.

5. What are common caching strategies in PWAs?
Cache-first, network-first, and stale-while-revalidate.

6. Can PWAs send push notifications?
Yes, with service workers and browser support for push APIs.

7. How do you make a PWA installable?
By adding a manifest, serving via HTTPS, and meeting browser install criteria.

8. What are benefits of PWAs?

• Faster development than native apps

• Cross-platform reach

• Offline and push notification support

• Lower maintenance costs

9. What are challenges with PWAs?

• Limited access to some native APIs (Bluetooth, NFC)

• Performance limitations compared to fully native apps

• Inconsistent support across iOS vs Android

10. Where are PWAs being adopted?
By companies like Twitter, Starbucks, Pinterest, and Alibaba for scalable, engaging, mobile-friendly applications.