How to manually send HTTP POST requests from Firefox or Chrome browser – Dev

The best answers to the question “How to manually send HTTP POST requests from Firefox or Chrome browser” in the category Dev.


I want to test some URLs in a web application I’m working on. For that I would like to manually create HTTP POST requests (meaning I can add whatever parameters I like).

Is there any functionality in Chrome and/or Firefox that I’m missing?


CURL is awesome to do what you want! It’s a simple, but effective, command line tool.

REST implementation test commands:

curl -i -X GET
curl -i -X GET
curl -i -X DELETE
curl -i -X POST -H 'Content-Type: application/json' -d '{"name": "New item", "year": "2009"}'
curl -i -X PUT -H 'Content-Type: application/json' -d '{"name": "Updated item", "year": "2010"}'


I have been making a Chrome app called Postman for this type of stuff. All the other extensions seemed a bit dated so made my own. It also has a bunch of other features which have been helpful for documenting our own API here.

Postman now also has native apps (i.e. standalone) for Windows, Mac and Linux! It is more preferable now to use native apps, read more here.


Forget the browser and try CLI. HTTPie is a great tool!

HTTPie screenshot

CLI HTTP clients:

  • HTTPie
  • Curlie
  • HTTP Prompt
  • Curl
  • wget

If you insist on a browser extension then:


  • Postman – REST Client (deprecated, now has a desktop program)
  • Advanced REST client
  • Talend API Tester – Free Edition


  • RESTClient



Open Network panel in Developer Tools by pressing Ctrl+Shift+E or by going Menubar -> Tools -> Web Developer -> Network. Then Click on small door icon on top-right (in expanded form in the screenshot, you’ll find it just left of the highlighted Headers), second row (if you don’t see it then reload the page) -> Edit and resend whatever request you want

Firefox Dev Tools with button "Edit and Resent" highlighted

POST request body highlighted