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

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In both Firefox and Chrome browsers, you can manually send HTTP POST requests using their built-in developer tools, specifically the Network tab. Here's how to do it with examples for both browsers:

For Firefox:

  1. Open Firefox and navigate to the website where you want to send the HTTP POST request.

  2. Open the Developer Tools by pressing F12 or right-clicking on the page and selecting "Inspect" (or "Inspect Element").

  3. In the Developer Tools panel, go to the "Network" tab.

  4. Ensure that the "Persist logs" option is selected (it keeps the network logs even after page navigation).

  5. Perform the action on the website that would trigger the POST request, such as submitting a form.

  6. You will see the POST request in the network logs. Click on it to view details.

  7. In the request details, you can see the request method (POST), request headers, and request payload (the data sent in the POST request).

  8. If you want to manually send a POST request, you can right-click on the request in the network logs, choose "Copy," and then "Copy as cURL" or "Copy as Fetch." This allows you to copy the request details to the clipboard and use them in a terminal or another HTTP client to send the request.

For Chrome:

  1. Open Chrome and navigate to the website where you want to send the HTTP POST request.

  2. Open the Developer Tools by pressing F12 or right-clicking on the page and selecting "Inspect" (or "Inspect Element").

  3. In the Developer Tools panel, go to the "Network" tab.

  4. Ensure that the "Preserve log" option is selected (it keeps the network logs even after page navigation).

  5. Perform the action on the website that would trigger the POST request, such as submitting a form.

  6. You will see the POST request in the network logs. Click on it to view details.

  7. In the request details, you can see the request method (POST), request headers, and request payload (the data sent in the POST request).

  8. If you want to manually send a POST request, you can right-click on the request in the network logs, choose "Copy," and then "Copy as cURL" or "Copy as Fetch." This allows you to copy the request details to the clipboard and use them in a terminal or another HTTP client to send the request.

These steps allow you to inspect and potentially manually reproduce POST requests made by websites in both Firefox and Chrome using their developer tools.

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