Question Social sharing

Hello,

I'm doing a webgl game for mobile devices. I am trying to take a screenshot and share it using a button but i cannot. I have found several tutorials on this, but none works for webgl. The same happens with assets,
none works for webgl. Im tryed with https://assetstore.unity.com/packages/tools/integration/native-share-for-android-ios-112731 , but not works too.

Take the screenshoot and other parameters its seem easy, but i cant share.
These are the last lines of code, Is it possible that the code refers to projects built on Android or IOS?

Code (CSharp):

1. #if UNITY_EDITOR
2.         Debug.Log( "Shared!" );
3. #elif UNITY_ANDROID
4.         AJC.CallStatic( "Share", Context, targetPackage, targetClass, files.ToArray(), mimes.ToArray(), subject, text, title );
5. #elif UNITY_IOS
6.         _NativeShare_Share( files.ToArray(), files.Count, subject, text );
7. #else
8.         Debug.Log( "No sharing set up for this platform." );
9. #endif
10.  

I don't know how to do it, not if it's possible,
Has anyone done something similar? or do you know any asset that works in webgl?

Thank you.