W3C

The Tracking Protection Working Group has updated two Working Drafts:

• Tracking Preference Expression (DNT). This specification defines the technical mechanisms for expressing a tracking preference via the DNT request header field in HTTP, via an HTML DOM property readable by embedded scripts, and via properties accessible to various user agent plug-in or extension APIs. It also defines mechanisms for sites to signal whether and how they honor this preference, both in the form of a machine-readable tracking status resource at a well-known location and via a "Tk" response header field, and a mechanism for allowing the user to approve exceptions to DNT as desired.
• Tracking Compliance and Scope. This specification defines the meaning of a Do Not Track (DNT) preference and sets out practices for websites to comply with this preference.

Learn more about the Privacy Activity.

The Web Notification Working Group has published a Last Call Working Draft of Web Notifications. Web notifications defines an API for end-user notifications. A notification allows alerting the user outside the context of a web page of an occurrence, such as the delivery of email. Comments are welcome through 24 October. Learn more about the Rich Web Client Activity.

The Web Applications Working Group has published a Last Call Working Draft of File API. This specification provides an API for representing file objects in web applications, as well as programmatically selecting them and accessing their data. It also defines objects to be used within threaded web applications for the synchronous reading of files. Comments are welcome through 24 October. Learn more about the Rich Web Client Activity.

W3C is present at the Intel Developer Forum (IDF'13), happening now in San Francisco, USA. Through talks in developer sessions and discussions at the W3C booth, W3C explains the many advantages of using the Open Web Platform technologies, and how the W3DevCampus training program helps developers to get trained on these Web technologies. W3DevCampus is the only official training program and features a W3C HTML5 course now open for registration. Meet Bernard Gidon at the W3C booth at IDF'13 to learn more and then enroll to become an HTML5 expert!

The RDF Working Group and the JSON-LD Community Grouppublished the Candidate Recommendation of JSON-LD 1.0, and JSON-LD 1.0 Processing Algorithms and API. This signals the beginning of the call for implementations for JSON-LD 1.0.

JSON-LD harmonizes the representation of Linked Data in JSON by describing a common JSON representation format for expressing directed graphs; mixing both Linked Data and non-Linked Data in a single document. The syntax is designed to not disturb already deployed systems running on JSON, but provide a smooth upgrade path from JSON to JSON-LD. It is primarily intended to be a way to use Linked Data in Web-based programming environments, to build interoperable Linked Data Web services, and to store Linked Data in JSON-based storage engines.

The JSON-LD 1.0 specification describes the JSON-LD language in a way that is useful to authors. It also provides the core grammar of the language for implementers. The JSON-LD 1.0 Algorithms and API specification describes useful Algorithms for working with JSON-LD data. It also specifies an Application Programming Interface that can be used to transform JSON-LD documents in order to make them easier to work with in programming environments like JavaScript, Python, and Ruby.

Learn more about the Semantic Web Activity.