The Microformat Transformer Toolkit
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TransFormr version 2.6

TransFormr is a simple toolkit that uses PHP and XSLT for extracting and transforming microformats

Microformats that are supported by this transformer are:

Microformats that are supported by this transformr but are classed as Experimental and should not be used in a production environment because they may be removed or updated at any time are:

Non microformats supported by this transformer are:


You must have PHP version 5.2.0 or higher with XSLT enabled to run TransFormr.

  • Download the latest version of Transformr from
  • Unpack the entire contents of the file called WebOrganics-TransFormr-XXXXX to your webserver either into its own directory or the the root of your directory (dedicated transformers only).
  • Take a look at the settings in index.php and change to suit (everything should work fine without altering anything).
  • If you plan to use the ARC2 store, enter your database, user, pass and hosts settings in /app/config.php and check that the dump folder is writable by the webserver.
  • Surf your way to wherever you unpacked your file eg: .
  • Enter a url, Have fun transforming some microformats ;)


Main conversions are:

  • Detect => Detect all.
  • hCard => vCard (.vcf), RDF, rdfjson, ntriples, turtle, html ( microdata ) or RDFa.
  • hCalendar => iCal (.ics), RDF, rdfjson, ntriples, turtle, html ( microdata ) or RDFa.
  • hAtom => Atom.
  • hAtom + rel-enclosure => RSS2.
  • hReview => RDF, rdfjson, ntriples, turtle, html ( microdata ) or RDFa.
  • Geo => KML.
  • hAudio => RSS2.

Experimental conversions are:

  • hAudio => XSPF.
  • hAudio => MO (Music Ontology).
  • hAtom => SIOC, rdfjson, ntriples, turtle, html ( microdata ) or RDFa.
  • hCard + XFN => FOAF, rdfjson, ntriples, turtle, html ( microdata ) or RDFa.

Other non microformat conversions

  • OGP ( Facebook Open Graph Protocol ) => RDF, rdfjson, ntriples, turtle, html ( microdata ) or RDFa.
  • RDFa => RDF, rdfjson, ntriples, turtle, or html ( microdata ).
  • eRDF => RDF, rdfjson, ntriples, turtle, html ( microdata ) or RDFa.
  • Microdata => JSON.

Transformr Conversion urls

RDF output Options:

ntriples, rdfa, turtle, rdfjson, and html (microdata)

Transformation Types are :

detect, hcard, hcard-rdf, hatom, hatom-rss2, geo, hcalendar, hcalendar-rdf, hreview, haudio-rss, mo-haudio, haudio-xspf, hfoaf, mrss, ogp-rdf, erdf, rdfa, hcard2qrcode and hatom-sioc.

Non RDF conversions,

  • index.php?type=(type)&url=http://(your page)

For all RDF conversions

  • index.php?type=(type)&output=(ntriples|rdfa|turtle|rdfjson|html)&url=http://(your page)

Apache Clean URLs

Non RDF conversions,

  • http://[transformr]/[type]/http://[your page] ( transforms a whole page )
  • http://[transformr]/[type]/referer ( transforms from refering url )
  • http://[transformr]/[type]/[your fragment] ( transforms from refering html id )

For all RDF conversions

  • http://[transformr]/[type]/(ntriples|rdfa|turtle|rdfjson|html)/http://[your page]

By JSON Query.

Queries are formed using three properties, url (url of the webpage ) , type ( conversion type ) and output (output type), example

The output property is optional and may be omitted from a Query, example

You can also use describe queries on the ARC2 store ( if enabled ), this will return a document already extracted to the store, example

By SPARQL Query.

When you extract RDF using Transformr and the arc2 store is enabled, you can query the Transformr using the sparql endpoint, example

  • sparql/endpoint?query=CONSTRUCT { ?s ?p ?o } WHERE { GRAPH </type/> { ?s ?p ?o } }

All graphs are relative to the store, "type" is the type of RDF you extracted e.g hfoaf, rdfa ... etc, and the url of the page you extracted.

By Direct input.

You can also transform a fragment of html by direct input, this is intended to be used for testing you markup before publishing it live.

Future releases

Work is in progress supporting the Species Microformat, hProduct + hCard Microformat to Good Relations and Data vocab transformation for Rich Snippets


  • 2.6 Added HTML5 Parser and parsing microdata by direct input.
  • 2.5 Added microdata to JSON transformation.
  • 2.4 Added value-title parsing for all microformats.
  • 2.3 Transformr is now Faster due to new caching action. Added support for Transforming by direct input, Some XSLT bugs fixed.
  • 2.2 Transform processes base@href for all xslt transformations, AR2 RDFTransformrPlugin and EndpointTemplatPlugin support around 350 namespaces, list is automaticaly downloaded from, improved config.php .
  • 2.1 Endpoint has new template using ARC2_EndpointTemplatPlugin, and DELETE FROM <...> functionality.
  • 2.0 adds ARC2 storage and hAtom2SIOC transformation.
  • 1.3 fixes @prefix and @vocab support for RDFa plus one or two minor bugs.
  • 1.2.1 Adds @prefix and @vocab support to RDFa2RDFXML.xsl.
  • 1.2 Implements JSON Query.
  • 1.1 some bugs fixed, new hcard 2 qrcode api
  • 1.0 New code, added some configurations, ogp-rdf transformation added, xoxo-opml transformation added, updated version of ARC2 2010-04-26
  • 0.6.2 updated ARC2_Transformr, incudes a non-hacked version of ARC2.
  • 0.6.1 Most RDF including RDFa conversions are parsed by ARC2 ( included )
  • 0.5.1 Transformr also supports Fragment parsing for individual microformats.


Many thanks to: