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https://github.com/openlink/structured-data-sniffer

The Openlink Structured Data Sniffer (OSDS) is a plugin for the Chrome, Firefox and Opera browsers that detects and shows structured data embedded in web pages in either JSON-LD, Microdata, RDFa or Turtle format.
https://github.com/openlink/structured-data-sniffer

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The Openlink Structured Data Sniffer (OSDS) is a plugin for the Chrome, Firefox and Opera browsers that detects and shows structured data embedded in web pages in either JSON-LD, Microdata, RDFa or Turtle format.

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README 

        
# Deprecated Repository for OpenLink Structured Data Sniffer



## Please refer to [the new primary repository for this extension](https://github.com/OpenLinkSoftware/OSDS_extension).



*This respository is primarily focused on developers.  You may want to also look 

at [the more user-/consumer-focused site](http://osds.openlinksw.com/).*



## Intro



The OpenLink Structured Data Sniffer (OSDS) is a plugin for 

[Google Chrome](http://www.google.com/chrome/browser/),

[Mozilla Firefox](http://www.mozilla.org/firefox/), and 

[Opera](http://www.opera.com/)

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](http://www.apple.com/safari/) and

[Microsoft Edge](https://www.microsoft.com/microsoft-edge)

is under construction.



## License

Copyright 2015-2021 [OpenLink Software](mailto:[email protected])



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

[COPYING](https://github.com/OpenLinkSoftware/OSDS_extension/blob/develop/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](https://chrome.google.com/webstore/detail/openlink-structured-data/egdaiaihbdoiibopledjahjaihbmjhdj) 

or [the Mozilla catalog](https://addons.mozilla.org/en-US/firefox/addon/openlink-structured-data-sniff/).



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:

```shell

$ 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](https://github.com/OpenLinkSoftware/OSDS_extension/releases/latest)

or directly from one of the following links:



- [latest stable .tar.gz](https://github.com/OpenLinkSoftware/OSDS_extension/archive/master.tar.gz)

- [latest stable .zip](https://github.com/OpenLinkSoftware/OSDS_extension/archive/master.zip)

- [latest development .tar.gz](https://github.com/OpenLinkSoftware/OSDS_extension/archive/develop.tar.gz)

- [latest development .zip](https://github.com/OpenLinkSoftware/OSDS_extension/archive/develop.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](https://github.com/OpenLinkSoftware/OSDS_extension/releases/download/v2.16.1/OSDS_FF.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](http://www.openlinksw.com/)

  - [BBC News Homepage](http://www.bbc.com/news)

  - [Ted.com talk by Susan Etlinger](https://www.ted.com/talks/susan_etlinger_what_do_we_do_with_all_this_big_data)

  - [DBpedia article on Semantic Web](http://dbpedia.org/page/Semantic_Web)



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