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PWA Builder - Analyse an existing app

PWA Builder - Analyse an existing app

Let's explore the PWA Builder tool and learn how we can use it to validate an existing PWA.

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PWA Builder landing page
PWA Builder landing page

Discover the platform

PWA Builder is an open-source project from Microsoft in constant development.

While PWA Builder is less powerful than Workbox (presented later), it provides interesting features to validate or publish our PWAs.

Validate an existing PWA

From the home page, we can provide the URL of an existing PWA. The portal will analyze it and provide a report with multiple sections (web manifest, service worker, security), offering hints or warnings for each part.

We can take the Angular Website Docs as an example since it is a fully-fledged PWA.

The tool scans for a web app manifest, an installed service worker, and a secure connection, along with several other parameters. It assigns a score to ...