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alex / chrome-lod

Extension for Chrome that checks pages as you browse for the presence of Linked Open Data behind them and reveals the underlying data.

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@Alex Tucker Alex Tucker authored on 5 Dec 2014
README Add RDFa parsing. 9 years ago
background.js Next go at fix for XHR cache. Request now always sent, but response is 10 years ago
codemirror-compressed.js Initial stab at a Chrome extension to reveal linked data. 10 years ago
codemirror.css Initial stab at a Chrome extension to reveal linked data. 10 years ago
contentscript.js Add RDFa parsing. 9 years ago
custom.css Also look for redirects. 10 years ago
fold.png Initial stab at a Chrome extension to reveal linked data. 10 years ago
fold.svg Check for Turtle as well as XML/RDF. Parse XML/RDF and look for licensing info. Click on revealed RDF to make it full height/width. Show traffic light icon depending on results of parsing. 10 years ago
jquery-ui.min.js Initial stab at a Chrome extension to reveal linked data. 10 years ago
jquery.min.js Initial stab at a Chrome extension to reveal linked data. 10 years ago
jquery.rdfquery.core-1.0.js Squash bug. Kludge rdfquery to not throw a wobbly on invalid/undefined datatype values. 10 years ago
jquery.rdfquery.core.min-1.0.js Initial stab at a Chrome extension to reveal linked data. 10 years ago
manifest.json Add RDFa parsing. 9 years ago
package-icon-128.png Check for Turtle as well as XML/RDF. Parse XML/RDF and look for licensing info. Click on revealed RDF to make it full height/width. Show traffic light icon depending on results of parsing. 10 years ago
package-icon-16.png Check for Turtle as well as XML/RDF. Parse XML/RDF and look for licensing info. Click on revealed RDF to make it full height/width. Show traffic light icon depending on results of parsing. 10 years ago
package-icon-19.png Also look for redirects. 10 years ago
package-icon-48.png Check for Turtle as well as XML/RDF. Parse XML/RDF and look for licensing info. Click on revealed RDF to make it full height/width. Show traffic light icon depending on results of parsing. 10 years ago
package-icon.svg Check for Turtle as well as XML/RDF. Parse XML/RDF and look for licensing info. Click on revealed RDF to make it full height/width. Show traffic light icon depending on results of parsing. 10 years ago
pageIcon-amber.png Also look for redirects. 10 years ago
pageIcon-green.png Also look for redirects. 10 years ago
pageIcon-red.png Also look for redirects. 10 years ago
r-icon.png Initial stab at a Chrome extension to reveal linked data. 10 years ago
turn.css Initial stab at a Chrome extension to reveal linked data. 10 years ago
turn.js Initial stab at a Chrome extension to reveal linked data. 10 years ago
vkbeautify.0.99.00.beta.js Add RDFa parsing. 9 years ago
README 
Chrome LOD extension
====================

An extension for Chrome that looks for the presence of Linked Open
Data behind the pages you browse and if available, reveals the
underlying data.

Debugging/Building
------------------

In Chrome, open the tools/extensions page, ensure that developer mode
is selected, and click to 'load unpacked extension...'.  Select the
directory you checked out the chrome-lod source to.  This should
enable the extension directly.

In order to package the extension for deployment, use the 'pack
extension' button, which will result in a chrome-lod.crx file and
associated keyfile.

Rationale
---------

The extension runs once on each page you visit looking for any RDF
data it can find in the following order:

1) Any <link> tags in the page with relationship 'meta' or 'alternate'
pointing to a URI with media-type application/rdf+xml or text/turtle.

2) Any RDFa in the body of the HTML document.

3) Using content negotiation on the current URI, asking for
application/rdf+xml or text/turtle representation of the current
resource.

If an RDF representation is available, it will be rendered behind the
current page and a peel-back animation will reveal the background RDF
data as the mouse hovers over the top left corner of the page.

Examples
--------

http://sws.geonames.org/3020251/

http://data.nytimes.com/48675831753778135041

http://collection.britishmuseum.org/id/object/EOC3130

http://data.ordnancesurvey.co.uk/datasets/os-linked-data

http://id.loc.gov/vocabulary/organizations/ukmajru.html

http://www.bbc.co.uk/programmes/b03kqfzx

http://alpha.acropolis.org.uk/dc1c141fe5d14dcbb04e907156c62e46#id

http://live.dbpedia.org/page/William_Shakespeare

http://data.europeana.eu/item/92056/BD9D5C6C6B02248F187238E9D7CC09EAF17BEA59

http://didactalia.net/comunidad/materialeducativo/recurso/La-teoria-de-la-relatividad-en-ingles/eb95e40e-937f-4447-a68d-5f1a3fbc97ff

Todo
----

Parsing Turtle to look for licensing statements.

Checking that the license applies to the document URI of the RDF document.

Checking what license is being applied and that it is usable.