# ClearURLs **ClearURLs** is an add-on based on the new WebExtensions technology and optimized for *Firefox*. This add-on will remove the tracking fields form all URLs which are visited by the browser and use a rule file, namely `data.json`. This add-on protects your privacy and block the request from advertising services like *doubleclick.net*. > **Application:** > > Large (and small) webpages use elements in the URL, e.g.: https://example.com?source=thisIstheSiteIvisitedBefore to track your online activities. In this example, the source field tells the provider which page you visited before. The add-on will remove these tracking fields from the URL If have any suggestions or complaints, please create an issue request. Screens: ![Interface (version 1.1.2.0)](https://addons.cdn.mozilla.net/user-media/previews/full/187/187625.png?modified=1505340066) Copyright notes third persons: We are use some external script in our add-on. The authors and licenses are listed below. - Bootstrap v3.3.7 (http://getbootstrap.com) | Copyright 2011-2016 Twitter, Inc. | Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE) - jQuery v3.2.1 (https://jquery.com/) | Copyright 2017 The jQuery Foundation | Licensed under MIT (https://jquery.org/license/) - sha256.jquery.plugin (https://github.com/orsozed/sha256.jquery.plugin) | Copyright 2003, Christoph Bichlmeier | MIT (https://raw.github.com/orsozed/JQuery-Plugins/master/license/MIT-LICENSE.txt) | GPLv2 (https://raw.github.com/orsozed/JQuery-Plugins/master/license/GPL-LICENSE.txt) - DataTables (https://datatables.net/) | Copyright 2011-2015 SpryMedia Ltd | MIT (https://datatables.net/license/) [![License: MPL 2.0](https://img.shields.io/badge/License-MPL%202.0-brightgreen.svg)](https://opensource.org/licenses/MPL-2.0)