Is there any way to know what data are you sending in a post request?, i mean all of it?
I want to know this specificaly from a web-browser, doesn't matter which one in particular meanwhile can be installed on windows.
Thanks in advance
You can do it by intercepting the request you send with a proxy (ex: BurpSuite).
Basically you need to put your browser proxy to 127.0.0.1:8080, launch burp and start the intercept mode in the proxy tab.