How to add the same icon (as in the screenshot) to create a link to the site as an application in Chrome?

Question

Google Chrome

I looked in the source, tried to do it through manifest.json - it didn't work.

Answer 1

The site itself must meet the requirements of the PWA. You need to add the manifest.json file https://developer.mozilla.org/en-US/docs/Web/Manifest
It must contain these fields:
Also, a ServiceWorker must be installed that can process the installation.
An example of a complete implementation is here https://web.dev/codelab-make-installable/
More details can be found here https://web.dev/discover-installable/
https://developers.google.com/web/fundamentals/app ...