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40 changes: 20 additions & 20 deletions content/index.markdown
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Original file line number Diff line number Diff line change
@@ -1,6 +1,6 @@
## <a id="intro" href="#intro">Introduction</a>

The [Open Graph protocol](http://ogp.me/) enables any web page to become a
The [Open Graph protocol](https://ogp.me/) enables any web page to become a
rich object in a social graph. For instance, this is used on Facebook to allow
any web page to have the same functionality as any other object on Facebook.

Expand All @@ -11,7 +11,7 @@ builds on these existing technologies and gives developers one thing to
implement. Developer simplicity is a key goal of the Open Graph protocol which
has informed many of
[the technical design decisions](
http://www.scribd.com/doc/30715288/The-Open-Graph-Protocol-Design-Decisions).
https://www.scribd.com/doc/30715288/The-Open-Graph-Protocol-Design-Decisions).


---
Expand Down Expand Up @@ -80,8 +80,8 @@ For example (line-break solely for display purposes):
<meta property="og:site_name" content="IMDb" />
<meta property="og:video" content="http://example.com/bond/trailer.swf" />

The RDF schema (in [Turtle](http://en.wikipedia.org/wiki/Turtle_(syntax)))
can be found at [ogp.me/ns](http://ogp.me/ns/ogp.me.ttl).
The RDF schema (in [Turtle](https://en.wikipedia.org/wiki/Turtle_(syntax)))
can be found at [ogp.me/ns](https://ogp.me/ns/ogp.me.ttl).

---
## <a id="structured" href="#structured">Structured Properties</a>
Expand All @@ -96,7 +96,7 @@ The `og:image` property has some optional structured properties:
* `og:image:secure_url` - An alternate url to use if the webpage requires
HTTPS.
* `og:image:type` - A [MIME type](
http://en.wikipedia.org/wiki/Internet_media_type) for this image.
https://en.wikipedia.org/wiki/Internet_media_type) for this image.
* `og:image:width` - The number of pixels wide.
* `og:image:height` - The number of pixels high.

Expand Down Expand Up @@ -159,7 +159,7 @@ specify its type. This is done using the `og:type` property:

When the community agrees on the schema for a type, it is added to the list
of global types. All other objects in the type system are
[CURIEs](http://en.wikipedia.org/wiki/CURIE) of the form
[CURIEs](https://en.wikipedia.org/wiki/CURIE) of the form

<head prefix="my_namespace: http://example.com/ns#">
<meta property="og:type" content="my_namespace:my_type" />
Expand Down Expand Up @@ -378,15 +378,15 @@ The following types are used when defining attributes in Open Graph protocol.

You can discuss the Open Graph Protocol in
[the Facebook group](
https://www.facebook.com/groups/opengraph/) or on
[the developer mailing list](
http://groups.google.com/group/open-graph-protocol).
https://www.facebook.com/groups/opengraph/) or contribute on
[Github](
https://github.com/facebook/open-graph-protocol/).
It is currently being consumed by Facebook
([see their documentation](
http://developers.facebook.com/docs/opengraph/)), Google ([see their documentation](
https://developers.google.com/+/web/snippet/)), and
https://developers.facebook.com/docs/sharing/opengraph)), Twitter ([see their documentation](
https://developer.twitter.com/en/docs/tweets/optimize-with-cards/guides/getting-started#twitter-cards-and-open-graph)), Yandex ([see their documentation](https://yandex.com/support/webmaster/open-graph/intro-open-graph.html)), LinkedIn ([see their documentation](https://www.linkedin.com/help/linkedin/answer/46687/making-your-website-shareable-on-linkedin?lang=en)), Pinterest ([see their documentation](https://developers.pinterest.com/docs/rich-pins/articles/)) and
[mixi](
http://developer.mixi.co.jp/en/connect/mixi_plugin/mixi_check/spec_mixi_check/).
https://developer.mixi.co.jp/en/connect/mixi_plugin/mixi_check/spec_mixi_check/).
It is being published by IMDb, Microsoft, NHL, Posterous, Rotten Tomatoes,
TIME, Yelp, and many many others.

Expand All @@ -396,16 +396,16 @@ TIME, Yelp, and many many others.
The open source community has developed a number of parsers and publishing
tools. Let the Facebook group know if you've built something awesome too!

* [Facebook Object Debugger](http://developers.facebook.com/tools/debug/) - Facebook's official parser and debugger.
* [Google Rich Snippets Testing Tool](http://www.google.com/webmasters/tools/richsnippets) - Open Graph protocol support in specific verticals and Search Engines.
* [Facebook Object Debugger](https://developers.facebook.com/tools/debug/) - Facebook's official parser and debugger.
* [Google Rich Snippets Testing Tool](https://www.google.com/webmasters/tools/richsnippets) - Open Graph protocol support in specific verticals and Search Engines.
* [PHP Validator and Markup Generator](https://github.com/niallkennedy/open-graph-protocol-tools) - OGP 2011 input validator and markup generator in PHP5 objects.
* [PHP Consumer](http://github.com/scottmac/opengraph) - A small library for accessing of Open Graph Protocol data in PHP.
* [PHP Consumer](https://github.com/scottmac/opengraph) - A small library for accessing of Open Graph Protocol data in PHP.
* [OpenGraphNode in PHP](http://buzzword.org.uk/2010/opengraph/#php) - A simple parser for PHP.
* [PyOpenGraph](http://pypi.python.org/pypi/PyOpenGraph) - A library written in Python for parsing Open Graph protocol information from web sites.
* [OpenGraph Ruby](http://github.com/intridea/opengraph) - Ruby Gem which parses web pages and extracts Open Graph protocol markup.
* [OpenGraph for Java](http://github.com/callumj/opengraph-java) - Small Java class used to represent the Open Graph protocol.
* [RDF::RDFa::Parser](http://search.cpan.org/~tobyink/RDF-RDFa-Parser/lib/RDF/RDFa/Parser.pm) - Perl RDFa parser which understands the Open Graph protocol.
* [Alternate WordPress OGP plugin](http://wordpress.org/plugins/wp-facebook-open-graph-protocol/) - A simple lightweight WordPress plugin which adds Open Graph metadata to WordPress powered sites.
* [PyOpenGraph](https://pypi.python.org/pypi/PyOpenGraph) - A library written in Python for parsing Open Graph protocol information from web sites.
* [OpenGraph Ruby](https://github.com/intridea/opengraph) - Ruby Gem which parses web pages and extracts Open Graph protocol markup.
* [OpenGraph for Java](https://github.com/callumj/opengraph-java) - Small Java class used to represent the Open Graph protocol.
* [RDF::RDFa::Parser](https://search.cpan.org/~tobyink/RDF-RDFa-Parser/lib/RDF/RDFa/Parser.pm) - Perl RDFa parser which understands the Open Graph protocol.
* [Alternate WordPress OGP plugin](https://wordpress.org/plugins/wp-facebook-open-graph-protocol/) - A simple lightweight WordPress plugin which adds Open Graph metadata to WordPress powered sites.


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