I searched a lot about how to add extensions or add-ons to Opera Neon, but the answer for such-type questions is still the same. You can't add extensions to Opera Neon.
What must be considered regarding extensions in any application is that the application must have the functionality programed into it.
While Opera Neon may be based on Opera, the current staff at Opera do not, and have not had the same vision of usability that the original developer of Opera who has not been with Opera for a long time, had.
The ability to support extensions was intentionally programmed out of Opera as the current developer team is of the opinion that extensions that make web browsers more user friendly and able to serve the user's needs, are unnecessary.
Sadly, the mentality of not serving the user's needs is currently spreading across the developer community and is evident in the way Firefox has not only limited it's flagship browser, but introduced bugs as well.
Neon is based on the concept that new is always better even if you cannot do with the new, what you are able to do with the old.
If you wish to add extensions to your browser, you have no choice but to either stick with the previous version of Opera or, change over to a browser where the developer community retains and supports that vision that a browser should and ought to be flexible enough to support the user's needs. Not hinder their browsing experience.
Just because one program is based on another one, does not necessarily mean that it is capable of doing the same things. You cannot add extensions to Opera Neon. It is not able to run them.
Modern programs designed for MS Windows or other graphical operating systems consist of numerous interconnected sub-components. In the case of web browsers, these include:
- window & menu GUI (some of this will be provided by the OS)
- page rendering engine (such as Gecko or WebKit)
- extension APIs (such as ActiveX or NPAPI)
- user preferences, cache, and other file storage choices
Although Neon uses Blink, the same layout engine as Chromium, it does not include the code needed to run Chrome-style extensions.