Using Fiddler to Fake Response For A URL

less than 1 minute read

Fiddler is a must have tool for web developers. The Auto Responder feature of fiddler allows to fake response for a particular request.

Open up fiddler and switch to AutoResponder tab.

  1. Click on “Add Rule” button.
  2. In the bottom of the window, there is a Rule editor which expects a URL and the Type of response you want to return.
  3. We will say “” and from the drop-down select “404_plain.dat”.
  4. Click “Save”
  5. Go to file menu and click “Capture Traffic”.
  6. Try visiting and you should see a 404.

You can switch off the automatic responder by un-checking “Enable automatic responses” check box at any moment.

This is not rocket science but will come in handy for several development testing scenarios.

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