How can extension tell what browser it's running on?

[Wesley Branton]

I'm working on porting a Firefox add-on to Chromium-based browsers. Detecting whether the add-on is running on Chromium or Firefox is easy because Chromium doesn't have the "browser" object, but is there no API to tell what Chromium-based browser it's running on?

I don't see any way to tell if the extension is running on Google Chrome or Microsoft Edge or Opera. Each browser is a little different in the naming of some features (like Private Browsing, for example) and I'd like to have that terminology change dynamically in my add-on depending on what browser it's running on.

How can this be done?

[Shu]

I use this one, just test what is for Opera, I ignore that browser :)

function getBrowser(){

if (api.runtime.getURL('').startsWith('moz-extension://'))

return "Firefox";

else if (api.runtime.getURL('').startsWith('edge://extension'))

return "Edge";

else

return "Chrome";

}

[ComputerWhiz]

Just what I was looking for. Thanks!

[ComputerWhiz]

Edge returns a URL that starts with "chrome-extension://", so that's not going to work.

On Sunday, March 21, 2021 at 6:21:59 PM UTC Shu wrote:

[Shu]

This means that extension was downloaded from chrome store and not from Edge store

[ComputerWhiz]

It's downloaded from neither. It's the unpacked source code that I'm using for testing.

[hrg...@gmail.com]

I've just tried this from an extension hosted in the Edge store and it still gives "chrome-extension://".

In any case, the omnibox in Edge displays the extension URLs as "extension://..." not "edge://extension'/...", so that technique wouldn't have worked.

[Browser Extenstion]

navigator.userAgent.search(/OPR/) > 0 ? 'Opera' : navigator.userAgent.search(/Edg/) > 0 ? 'Edge' : navigator.userAgent.search(/Chrome/) > 0 ? 'Chrome' : undefined;

[ka...@couponfollow.com]

Actually, detecting the browser manually is not so simple, but we use 'bowser' npm package and it works well.