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OpenLink Structured Data Sniffer

Intro

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

  • JSON-LD
  • Microdata
  • RDFa
  • Turtle

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

License

Copyright 2016 OpenLink Software

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

Note: that 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

To deploy this extension on your local machine you can either clone the git source tree or download a source archive and then 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/openlink/structured-data-sniffer

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:

Install the extension in Chrome

To install this extension manually 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 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

Download the Firefox OSDS .zip file and extract the .xpi file.

To install this extension manually in Firefox v28+, use the following steps:

  • Open the Firefox browser
  • In address bar type: about:config
  • Press the I'll be careful, i promise button
  • Search for xpinstall.signatures.required
  • Double click that line so the value is set to false
  • In address bar type: about:addons
  • Click on the Gear icon and select Install Add-On from file... from the menu
  • Navigate to the directory where you extracted the OSDS_FF.xpi file, select this file and press the Open button
  • Press the install button

Examples

Navigate to a page containing structured data such as:

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