BOE Comparador is a Chrome extension developed by Miguel Gonzalez Herrera. As an unofficial add-on for the Boletín Oficial del Estado (BOE) website, this extension provides a useful functionality for comparing legal modifications published in the official state gazette.

By clicking on the "Comparar" (Compare) button in the versions section, a popup window will appear, displaying the changes made through various reforms. This feature enables users to quickly identify and understand the modifications made to the legal text.

BOE Comparador is a free extension that provides convenience and efficiency for those who need to stay updated on legal modifications. It is a valuable tool for legal professionals, researchers, and anyone interested in tracking changes in Spanish legislation.