What is a PWA? Progressive Web Apps for Beginners

What is PWA?

What are PWAs?

Progressive Web Apps (PWAs) are a type of web application that delivers a user experience similar to native mobile apps. They are built using web technologies such as HTML, CSS, and JavaScript but provide functionalities traditionally available only to native applications, like offline support, push notifications, and access to device hardware. PWAs are designed to be fast, reliable, and engaging, offering users a smooth experience across various devices and screen sizes. They are progressively enhanced, meaning they can work on any browser and progressively offer more features on supporting browsers. They are particularly beneficial for businesses aiming to reach users across different platforms without the need to develop separate native apps for each platform.

Characteristics of Progressive Web Apps

Here are some key characteristics of PWAs:


PWAs are designed to work seamlessly across various devices and screen sizes, including desktops, smartphones, and tablets.

Connectivity Independent:

PWAs can function even when the user is offline or has a poor internet connection, thanks to service workers that cache content and enable offline access.

App-like Experience:

PWAs often provide a smooth and immersive user experience similar to that of native mobile apps, including smooth animations and transitions.

Safe and Secure:

PWAs are served over HTTPS to ensure data security and integrity, especially when dealing with sensitive information.


PWAs can be discovered through search engines, shared via URL, and easily accessed without the need for installation from an app store.


Users can install PWAs on their device’s home screen or app launcher through the following four steps: 

  • Creating a web app manifest with app details.
  • Serve the website from a secure (HTTPS) domain.
  • Design an app icon for easy recognition.
  • Register a service worker(proxy servers) for offline functionality.

Consistent Appearance:

PWAs prioritize a uniform and polished user interface across various devices and screen sizes. This ensures that users experience a cohesive design and branding regardless of the platform they are accessing the app from. Consistent appearance helps reinforce brand identity and fosters user engagement by providing familiarity and ease of use.

Cross-Platform Compatibility:

PWAs are inherently designed to function smoothly across different operating systems and devices. This means that a single PWA can run on desktop computers, smartphones, tablets, and other devices without requiring separate development efforts for each platform. Cross-platform compatibility maximizes the reach of PWAs, enabling developers to target a broader audience while streamlining the development process.

PWAs combine the reach and accessibility of the web with the functionality and performance of native mobile apps, making them a compelling option for developers looking to deliver engaging experiences across different platforms.

Benefits of Progressive Web Apps

Progressive Web Apps (PWAs) offer numerous benefits for both developers and users. 

Here are some key advantages of Progressive Web Apps (PWAs):

Improved User Experience:

PWAs offer a smooth and engaging user experience similar to that of native mobile apps. They provide features like offline access, push notifications, and smooth animations, enhancing user satisfaction and retention.

Increased Reach:

PWAs can be accessed via a web browser, making them available to a wide range of users across different devices and platforms. This broader accessibility helps reach more users without the need for separate app store submissions.

Faster Loading Times:

PWAs leverage techniques like service workers and caching to reduce loading times, enabling quicker access to content even on slow or unreliable networks. This improves user engagement and satisfaction, especially in regions with limited internet connectivity.

Lower Development Costs:

Since PWAs are built using standard web technologies like HTML, CSS, and JavaScript, developers can leverage existing skills and frameworks, reducing development time and costs compared to building separate native apps for different platforms.

Easier Maintenance and Updates:

PWAs follow a web-based architecture, allowing for centralized updates and maintenance. Developers can roll out updates seamlessly without requiring users to download or install new versions, ensuring a consistent user experience across all devices.

Enhanced Discoverability:

PWAs can be indexed by search engines and shared via URL, making them discoverable through organic search and social media. This improves visibility and accessibility, driving traffic and user acquisition.

Reduced Friction for Installation:

PWAs can be installed directly from the browser onto the user’s device, eliminating the need to visit an app store. This reduces installation friction and encourages users to engage with the app more readily.

PWAs offer a compelling alternative to traditional native apps, providing a cost-effective, accessible, and user-friendly solution for developers and users alike.

Differences between Progressive Web Apps and Native Apps

There are several differences between progressive web apps and native apps:

Development Approach:

PWAs are built using web technologies like HTML, CSS, and JavaScript, while native apps are developed using platform-specific languages like Swift for iOS or Java/Kotlin for Android.


PWAs are accessed through web browsers and don’t require installation from an app store, whereas native apps need to be downloaded and installed from platforms like the Apple App Store or Google Play Store.

Cross-Platform Compatibility:

PWAs are inherently cross-platform and can run on any device with a modern web browser, while native apps need to be developed separately for each platform (iOS, Android, etc.).


While PWAs can offer good performance, native apps often have an edge in terms of speed and responsiveness, especially for graphics-intensive applications or those requiring access to device-specific features.

Access to Device Features:

Native apps have direct access to device features like GPS, camera, and push notifications, offering more seamless integration compared to PWAs, which may have limited access to some device capabilities.

Offline Functionality:

PWAs can provide limited offline functionality using service workers and caching mechanisms, while native apps have more robust offline capabilities and can offer a seamless user experience even without an internet connection.


Native apps rely on app store search and rankings for discoverability, while PWAs can be indexed by search engines and discovered through organic web search, potentially reaching a wider audience.

Updates and Maintenance:

PWAs can be updated seamlessly without user intervention, as they are web-based, while native apps require users to download and install updates from the respective app stores.

Understanding these differences can help you decide which approach is best suited for your project and target audience.

How to Build a PWA?

Follow these steps to create a great Progressive Web App (PWA) that works well on all devices:

Planning Your App:

Before starting, think about what you want your PWA to do, like its goals and features. You can draw sketches to see how it might look and get feedback from others.

Plan and Design the User Interface:

Once you have a plan, design how your app will look. Make sure it works on different devices and consider how users will interact with it.

Develop the Front-End:

Use web technologies like HTML, CSS, and JavaScript to build your app. Start with a design that works well on mobile devices and then make it look good on bigger screens too.

Use Service Workers:

Service workers are important for PWAs. They run in the background and help with things like offline access and caching. You’ll need to set them up to make your PWA work well.

Add Push Notifications:

If you want, you can use push notifications to send messages to users. Make sure to get their permission first.

Make it Fast:

Make sure your app loads quickly by optimizing its performance. You can do this by splitting up your code and caching data.

Test and Fix:

Finally, test your app on different devices and browsers to make sure it works well. Ask for feedback from users and make any necessary improvements.


To put it simply, building a Progressive Web App (PWA) offers a powerful way to provide users with an engaging and seamless experience across various devices. By leveraging modern web technologies and following best practices in design and development, PWAs can unlock numerous benefits such as improved user engagement, wider accessibility, and easier maintenance. Whether you’re a beginner or an experienced developer, embracing PWAs can lead to creating innovative and impactful web applications that meet the evolving needs of your audience.

Ready to build a cutting-edge Progressive Web App? Explore Progneo’s comprehensive suite of services, including PWA development, design, optimization, and more. With our expertise and commitment to excellence, we’ll help bring your vision to life and elevate your online presence. Contact us today to learn how Progneo can empower your business with the latest in web technology.

Asked Questions

PWAs are typically built using HTML, CSS, and JavaScript, and can be developed using frameworks like AngularJS, React, or Vue.js.

No, native apps cannot be indexed by search engines, whereas PWAs can, leading to better discoverability.

Modern APIs, such as service workers, push notifications, and web app manifests, enable PWAs to deliver enhanced functionality and user experiences.

Having a single codebase simplifies development and maintenance, reduces costs, and ensures consistency across different devices and platforms.

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