Automatic installation of the extension from the site in the browsers "Edge", "Opera" and "Safari"?

Question

Opera

Can anyone tell me if it is possible in the browsers "Opera", "Edge" and "Safari" to create a web page from which the user, based on his desire, can install the extension for himself by clicking on the button?

Answer 1

Browsers don't allow it.
Otherwise, every first joker would put an extension with some dirty tricks in your browser from his site.

Answer 2

And here without the friGate store .

<a class="uk-button fr-button-large uk-text-left uk-text-center-small uk-width-1-1"
        href="https://fri-gate.org/frigate.nex" rel="nofollow">
<img src="/pub/image/opera.svg" class="fr-button2">
<strong>friGate</strong> для Opera
  <div class="uk-hidden-small">луч&shy;ший вы&shy;бор для пользователей</div>
</a>

How to download and install Frigate on Opera browser ... .