Abstract: Techniques to encode data for a form in a HTML file and store the data for the HTML form along with the form itself are described. In one approach, script is injected into an HTML file at a client device. The HTML file may be configured to define at least one HTML form. The script injected into the HTML file is operable to encode input values entered into fields of the form with a data exchange standardization format to generate encoded input values and store the values in the HTML file. When the form is rendered, the script is further operable to decode the input values and populate the form with the values.