For example: if i wanted to pass Content-Type as application/json in the url itself, how would I do that?
I do know about Postman, but have not used it much. I was wondering if I could just do what I need from chrome itself, without needing to use POSTMAN.
No, you can't. HTTP standard has no way to do that.
But you can run JS with ajax request with you headers from address bar via bookmarklets mechanism.
https://en.wikipedia.org/wiki/Bookmarklet
Possible to run Javascript from address bar (bookmarklet) within Google Chrome's settings panel?
