Progressive
Web Apps (PWA)
Progressive Web Apps (PWAs) transform our websites into genuine mobile applications. They combine the simplicity of a website with the performance of a native application, without going through traditional app stores. Gmail, Google Maps, Pinterest, Twitter and Spotify already use this technology, proving that it is becoming part of everyday life for millions of users.
What is a PWA?
A Progressive Web App is a website designed to behave like an application.
In concrete terms:
- You access the site via your browser (Chrome, Safari, Edge, Firefox).
- A message prompts you to install it directly on the home screen of your smartphone or computer.
- Once installed, it opens like a ârealâ application, in full screen, without an address bar.
Why are companies interested in them?
PWAs are attracting more and more companies because they reduce costs and improve the user experience.
Accessible to all
No need to download from a store: a simple click is all it takes to âinstallâ the application. They work on all recent devices, whether iPhone, Android or computer.
Fast and reliable
Thanks to the smart cache (service worker), pages load instantly, even with a slow connection. Certain features (reading articles, viewing data, forms) remain accessible offline.
Stronger engagement
Push notifications can be sent to inform customers (offers, appointments, new products). An icon on the home screen creates a daily visual reminder of the brand.
Less expensive
A single application for all devices (mobile, tablet, desktop). No need to maintain multiple versions (iOS, Android).
Limitations and points to consider
Despite their advantages, PWAs do not replace all native applications.
- Uneven compatibility: on iOS (iPhone/iPad), some features remain limited (push notifications or hardware access).
- Less visibility: unlike native apps, PWAs are not listed in app stores (although some search engines such as Google do promote them).
- Restricted hardware features: limited access to certain APIs (Bluetooth, NFC, advanced sensors).
SEO, performance and security
A PWA is first and foremost a modern website. It therefore benefits from the following advantages:
- SEO: search engines can index its content (unlike some closed native apps).
- Performance: fast loading, responsive design, and high scores on tools such as Google Lighthouse.
- Security: PWAs must operate in HTTPS, guaranteeing data confidentiality.
Concrete examples
- Starbucks: its PWA is 99% lighter than the native app, but offers ordering and payment.
- Trivago: its web application has increased user engagement by 150%.
- Uber: the PWA version is only 50 KB and loads in less than 3 seconds, even on a 2G network.
(Sources: Google Developers, MDN Web Docs)
To sum up
Progressive Web Apps offer an ideal compromise:
- A smooth, modern experience for users.
- Reduced costs and simplified management for businesses.
They will not replace all native applications (complex games, apps that make intensive use of sensors), but they are now an essential solution for any organisation that wants to improve its accessibility and visibility without breaking the bank.