So I would like to use the new tab page (specifically customized with an extension) as my homepage (or start page) in Safari. How can I do that? What URL should I set homepage/start page to in order to achieve that?
MacBook Pro 14″
A new Safari window tab will open according to Safari's General settings. If it is a web page, it will have a URL. Nothing else does.
I surmise I do not understand what you want to accomplish, and that it has something to do with the "specifically customized with an extension" description. Can you describe that Safari Extension and what it does?
Refer to New tabs open with in Change General settings in Safari on Mac - Apple Support.
"Specifically customized with an extension" needs further explanation due to the wide variety of behaviors Extensions can inflict upon Safari. Ask the developer of whatever Extension you are using for instructions.
Right, but I believe my question applies in general -- like, what is the Safari "URL" of the New Tab page? That is, how can I set the New Tab page as homepage?
How to set the New Tab page as homepage or start page in Safari?
