1. A computer-implemented method for automatically populating fields of a webpage, the method comprising: generating, via a second webpage, a child product containing data that is linked to a core account that provides financial backing for the child product, wherein the data includes a child product card number; pushing, via a processor, the data from a browser add-on installed in the second webpage to a code segment inserted in a first webpage, wherein the code segment causes one or more fields included in the first webpage to be populated with the data, wherein the browser add-on is not installed in the first webpage; displaying the first webpage on a display device in a first instance of a web browser application executing on a computer system; and executing the code segment to populate the one or more fields included in the first webpage with the data.