This tutorial will help you install and configure Progressive Web App (drupal pwa) module on Drupal 8. The only requirement is your website needs to have SSL installed and configured properly.
Get the PWA Module Download URL
You can get PWA module for Drupal 7 & 8 from the following link
Install Drupal PWA Module
Login to your Drupal website admin area, click ‘Extent’ tab/button on the top then click ‘+ Install new module’ and paste the Drupal PWA module download URL and finally click ‘Install’.
Enable & Configure PWA Module
From Drupal site admin area click ‘Extend’ and look for ‘pwa’ module and select both ‘Progressive Web App’ and ‘Progressive Web App Extras’ and click ‘Install’.
Once these PWA modules are installed successfully, search for ‘pwa’ again to configure them, click ‘Configure’ one by one for both the modules.
Configure Drupal PWA Manifest file
Upload Web App Icon image
It is advised to upload your site logo in 512×512 pixel in .png format only. No other format is supported. Finally ‘Save configuration’.
PWA Extras Module Configuration
From ‘Extend’ modules’ page, search for PWA extras and click configuration with gear icon and click it. Now, on the PWA Extras configuration page, make changes for your web app.
Save PWA Extras Configuration
Audit PWA with Chrome’s Lighthouse
Just logout of your site’s admin area and navigate your site’s domain in Google Chrome browser and press F12 and select Audits and click ‘Run audits’ at bottom.