Web X-Ray Goggles provide a simple, easy way for non-technical people to inspect Web pages and learn about how they are put together.
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These are Web X-Ray Goggles, which provide a simple, easy way for non-technical people to inspect Web pages and learn about how they are put together.

To play with the current version of the goggles, check out https://secure.toolness.com/webxray/.

Build System

The build system for Web X-Ray Goggles was inspired by jQuery. In fact, Web X-Ray Goggles are, in some sense, just a custom build of jQuery. The src directory contains files that will ultimately be concatenated or "compiled" into a single JavaScript file, and the static-files directory contains standalone files used by the goggles.


To develop the goggles, you'll need:

  • git
  • python


First, check out the webxray repository:

git clone https://github.com/toolness/webxray.git

To start a web server that dynamically serves the Web X-Ray Goggles bookmarklet and unit tests, run:

python go.py serve

Alternatively, if you want to compile the static-files/webxray.js file, run:

python go.py compile

Reporting Bugs

If you have any bugs to report, please file them in Lighthouse.

Creating a Localization

Localizing the goggles is easy! Just translate webxray.pot on localize.mozilla.org.

Note that localizations are activated automatically at runtime by examining navigator.language. This can be manipulated in Firefox by changing the Languages preference.

Updating JQuery

Currently, the goggles build on JQuery 1.5. To update the repository's files to use a different version of JQuery, check out the webxray-stable branch of JQuery and run the export_to_webxray.py script.


All files that are part of this project are covered by the following license, except where explicitly noted.

Version: MPL 1.1/GPL 2.0/LGPL 2.1

The contents of this file are subject to the Mozilla Public License Version
1.1 (the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at

Software distributed under the License is distributed on an "AS IS" basis,
WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
for the specific language governing rights and limitations under the

The Original Code is webxray.

The Initial Developer of the Original Code is the Mozilla Foundation.

Portions created by the Initial Developer are Copyright (C) 2010
the Initial Developer. All Rights Reserved.


Alternatively, the contents of this file may be used under the terms of
either the GNU General Public License Version 2 or later (the "GPL"), or
the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
in which case the provisions of the GPL or the LGPL are applicable instead
of those above. If you wish to allow use of your version of this file only
under the terms of either the GPL or the LGPL, and not to allow others to
use your version of this file under the terms of the MPL, indicate your
decision by deleting the provisions above and replace them with the notice
and other provisions required by the GPL or the LGPL. If you do not delete
the provisions above, a recipient may use your version of this file under
the terms of any one of the MPL, the GPL or the LGPL.