@leocg One last question do I have to pay any fee for extension submission? The link you shared doesn't say anything about it https://dev.opera.com/extensions.

Thanks!

Hi,
Okay I understand but I want the extension to be published on opera addons store how to do it?

Hi,

I have recently asked someone to develop a chrome extension for my site and now I was wondering if there is any tool through which I can convert it into opera add on because when I try to publish it on opera store the test doesn't pass due to chrome codes into it.
I would really appreciate a kind response so I don't have to hire again.