Why does a POST request to my webhook in Webflow open a new tab and display the JSON response instead of showing a success message within Webflow?

If a POST request to your webhook in Webflow is opening a new tab and displaying the JSON response instead of showing a success message within Webflow, there are a few possible reasons for this behavior:

1. External Link or Redirect: It's possible that the webhook response includes a redirect or an external link. When you initiate a POST request to a webhook, Webflow will follow any redirects or external links in the response and open them in a new tab. This is done to ensure that you have access to any relevant information provided by the webhook.

2. Custom Code in Webhook Response: The JSON response from your webhook might include custom code that instructs the browser to open a new tab. This can happen if your webhook is specifically designed to handle certain scenarios or if it includes JavaScript code that triggers a new tab opening. Check the content of the JSON response to see if any custom code is present.

3. Webhook Setup: Ensure that your webhook is correctly set up within Webflow. Double-check the webhook URL and the configuration to make sure it's configured to handle the request and response properly. Check if there are any settings, options, or parameters in your webhook provider that might affect the behavior of the response.

4. Content-Type Header: Make sure the Content-Type header of the webhook response is set to "application/json". If it is set incorrectly, the browser might not interpret the response as JSON and instead treat it as a file download, leading to the new tab being opened.

To further investigate the issue, you can inspect the network traffic using browser developer tools. Look for the POST request to your webhook, and examine the response headers and body. This will provide more insight into the specifics of the response and help determine the cause of the new tab opening.

If you're unable to resolve the issue, I suggest reaching out to Webflow support or consulting their documentation for further assistance.