Edit and replay XHR chrome/firefox etc?

Question

I\'ve been looking for a way to alter a XHR request made in my browser and then replay it again. Say I have a complete POST request done in my browser, and the only thing I want

Answer 1

No need to install 3rd party extensions!

There exists the javascript-snippet, which you can add as browser-bookmark and then activate on any site to track & modify the requests. It looks like:

For further instructions, review the github page.