Merge manifest.json and site.webmanifest

Problem When you use OneSignal, it will generate a manifest.json for gcm_sender_id. When you use RealFaviconGenerator, it will generate a site.webmanifest for Android favicon. But there should be only one rel=”manifest” tag in your page. Reference: https://documentation.onesignal.com/docs/web-push-setup-faq#section-what-if-there-is-already-a-manifest-on-my-site- The manifest.json site.webmanifest Solution Merge them together and only put one manifest tag in your page header

Custom Code for OneSign Push Notifications

Below OneSign custom code will do the follow features: Show small subscription bell only when users are not subscribed yet Hide the OneSign logo Delay subscription request prompt Customize notification text Send custom notification welcome message Implementation Reference: https://documentation.onesignal.com/docs/web-push-custom-code-setup Generate and upload SDK files then add below code in HTML header In onesignal-moddiy.js file