This application allows you to insert a custom field, which cannot be seen by the user, into a form, or a website, and it is available on most web pages.

So, the name of this tool is a developer tool, and it is used to help the developer to debug the website or web application.

You can create your own fields with any data. A form or website that has a field with a name of "debug" will be able to output your data. You can also specify the domain in which it can be used. The fields that you create are stored in the local storage.