Hidden Form Finder, or HFF, is an app that allows you to easily view the hidden fields on a page and to easily hide or show the information. You can use the tool to easily see what information the site you are on is passing about you!

Download HFF and install the app, and you will be able to see all the hidden form fields on a page.

You can choose to have it automatically load when you open a page, and you can choose to have it turned off.

You can also choose the amount of time it will remain in the background.