Deprecated Repository for OpenLink Structured Data Sniffer

Please refer to the new primary repository for this extension.

This respository is primarily focused on developers. You may want to also look at the more user-/consumer-focused site.

Intro

The OpenLink Structured Data Sniffer (OSDS) is a plugin for Google Chrome, Mozilla Firefox, and Opera web browsers, that detects and shows structured data embedded in web pages in any of the following formats:

• JSON-LD
• Microdata
• RDFa
• Turtle

Support for additional browsers like Apple Safari and Microsoft Edge is under construction.

License

Copyright 2015-2021 OpenLink Software

This software is licensed under the GNU General Public License (see COPYING).

Note: the only valid version of the GPL license as far as this project is concerned is the original GNU General Public License Version 2, dated June 1991.

Deployment

Stable and/or signed releases may be deployed from the Chrome store or the Mozilla catalog.

To deploy the latest development version on your local machine, you can (1) either (a) clone the git source tree or (b) download a source archive, and then (2) install the extension into your Chrome or Opera browser on the same system.

Clone the git source tree

Clone the sources from github using the following commands:

$ cd src
$ git clone https://github.com/OpenLinkSoftware/OSDS_extension

which will automatically download the latest develop branch.

Download a source archive

Download and extract a .tar.gz or .zip from either one of the stable releases or directly from one of the following links:

• latest stable .tar.gz
• latest stable .zip
• latest development .tar.gz
• latest development .zip

Install the extension in Chrome

To install this extension manually in Chrome, use the following steps:

• Open the Chrome browser
• Select from menu: Chrome -> Preferences -> Extensions
• Check the [X] Developer mode box
• Choose the option Load unpacked extension...
• Navigate to the folder containing the extracted source code
• Press the Select button

Install the extension in Opera

To install this extension manually in Opera, use the following steps:

• Open the Opera browser
• In address bar type in opera:extensions
• Press the Developer Mode button
• Choose the option Load unpacked extension...
• Navigate to the folder containing the extracted source
• Press the Select button

Install the extension in Firefox

NOTE: Recent versions of Firefox only permit temporary installation of the unsigned .xpi file. The latest signed extension, which may lag a bit behind the unsigned, can be permanently installed from the [Mozilla Add-ons catalog(https://addons.mozilla.org/en-US/firefox/addon/openlink-structured-data-sniff/).

To install this extension manually in Firefox, use the following steps:

• Download the Firefox OSDS .zip file and extract the unsigned .xpi file.
• Open the Firefox browser
• In address bar type: about:addons or choose menu ** Add-ons**
• Click on Gear icon and choose Debug Add-ons
• Click on Load Temporary Add-on
• Navigate to the directory where you extracted the OSDS_FF.xpi file, select this file and press the Open button

Examples

Navigate to a page containing structured data such as:

• OpenLink Software Homepage
• BBC News Homepage
• Ted.com talk by Susan Etlinger
• DBpedia article on Semantic Web

and click on the sniffer icon that appears in the address bar.