An example method includes determining a subset of content excluding user-specific information displayed by an application on a user interface (UI) of a user device. The method further includes transmitting a request to a remote provider an autofill request for the application. The method also includes receiving one or more suggested user values and a field classification request for a text input field displayed by the application on the UI. The method further includes detecting a user input value in the text input field and determining a similarity metric for each of the one or more suggested user values based on a comparison of the user input value to each of the one or more suggested user values. The method also includes transmitting a response to the field classification request to the remote provide comprising the similarity metric for at least one of the one or more suggested user values.