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In exchange for some freedom, progressive web apps allow websites to operate more like native mobile apps. Without all the hassle of app store approvals and copious amounts of platform-specific native code, you get native mobile app capability (or something very close to it). A progressive web app can be installed on a user’s home screen and used the same way as a native app. The progressive web app is nevertheless launched under a pseudo-app frame that has some limitations and only permits access to pages that are sub-paths of the progressive web app’s original path. They must also be delivered via HTTPS.

The service worker, which is essentially a client-side JavaScript daemon, is the heart of a progressive online application. Employees in the service industry can listen for certain occurrences and respond to them. The fetch event, which may be used to cache web content offline as will be explained below, is one of the most often supported events.

The guidelines and limitations of progressive web apps are perfectly appropriate for many websites. Progressive web app updates are fetched by a service worker adhering to conventional HTTP caching guidelines, as opposed to waiting for Apple or Google to authorize and push out native app updates. Additionally, progressive web apps can now leverage a variety of native APIs, such as the geolocation, camera, and sensor APIs that were previously exclusively available to native mobile apps.

You may convert your website into a top-notch PWA (Progressive Web Application) during your lunch break!

Step 1: Create a report card in PWA Builder

First, you’ll want to check if your website has the features and metadata that great PWAs need.

  1. Navigate to PWA Builder
  2. Enter the URL of the website you’d like to convert to a PWA and click Start
  3. PWA builder will display a PWA Report Card that indicates the features your website has and does not have.

Step 2: Review your PWA Report Card

An example PWA Report Card

Your PWA Report Card contains your website’s score, out of a maximum score of 100. Scores are based off of three categories of features.


PWA evaluates your website’s Web Application Manifest if one is available, and identifies fields or values tht are required, recommended, and optional. You can improve your score by adding missing values, either by editing and re-publishing your manifest file, or by using the online manifest editor.


Changes made in the online manifest editor will not be published to your website. The changes you make will only be used by PWA Builder when creating your PWA.

Required values must be present, otherwise PWA builder won’t be able to create your PWA. Required fields include simply having a manifest, icons, name, short name, and a start_url.

Recommended fields aren’t required, but are important for your PWA’s user experience. It is strongly recommended you provide all recommended values, though PWA Builder can create a PWA without them. Recommended values include display mode, splash screen background color, description, orientation, screenshots, high resolution icon, maskable icon, categories, and shortcuts.

Read Also: How do You Monetize PWA?

Optional fields are not required, but can be specified if appropriate. Optional fields include an age rating and related applications.

Service Worker

Some of the prebuilt service workers offered by PWA Builder A service worker runs in the background to enable rich web app features where there would otherwise be 404 errors. PWA Builder requires a service worker to create your PWA, but if you do not have one you can use one of several prebuilt service workers provided by PWA Builder. To use a prebuilt service worker:

  1. Choose the Service Worker Options tab in the menu.
  2. Select the appropriate service worker from the curated list. Note that there are many prebuilt options; make sure to pick the service worker most appropriate for your specific use case.
  3. Once you’ve selected the service worker you’d like to use, you’ll be returned to your PWA Report Card.


All PWAs built with PWA Builder require three security protocols.

  1. Your site must use HTTPS.
  2. Your site must have a corresponding HTTPS certificate. If your website does not have a HTTPS certificate present you can publish to Azure to get built-in HTTPS support. Alternatively there are free third-party tools such as Letsencrypt that will allow you to obtain a HTTPS certificate for free.
  3. Your site must not contain mixed content. Mixed content is when a page served over HTTPS contains resources loaded over HTTP. Mixed content compromises the security of HTTPS and your PWA.

Step 3: Collect important information from Partner Center

You’ll need several pieces of information from your Partner Center account to create your PWA. If you do not have an MSA, click here for instructions on how to get started. You will also need to enroll in the Windows Developer Program.

Image of the application overview page

If you have not already done so, you’ll need to create your PWA app by reserving a new name. Once you’ve reserved your name, click the Start your submission button to create a new app submission.

Image of the product identity page

Next, click on the Product Management tab and select Product Identity. The product identity page will list your product’s package ID, your publisher ID, and your publisher display name. Save these values and return to PWA Builder.

Step 4: Generate your PWA on PWA Builder

An image of the generate button on PWA Builder

You now have everything you need to create your PWA on PWA Builder. Return to the PWA Builder site and click Generate.

PWA Builder prompting the user for information from Partner Center

PWA builder will prompt you for the information you obtained from Partner Center in step 3. Fill in the values and click Generate.

PWA files in file explorer

Once PWA Builder has created your PWA, your browser will automatically download it. Your PWA is packaged in a .zip file that contains six files.

The msix file is your PWA’s main app package. This file will install your PWA on the user’s machine.

The appx file is a classic app package. It is used to install your PWA on older versions of Windows.

Step 5: Submit your app packages to the Microsoft Store

These packages can be submitted to the Microsoft Store in the same way any other app packaged as an MSIX file can be. For further instructions on submitting your PWA packages to the store, see App submissions.

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