W3C

The JSON-LD Working Group has published three Proposed Recommendations and a Working Group Note:

• JSON-LD 1.1 defines a JSON-based expression of Linked Data graphs. The syntax is designed to easily integrate into deployed systems that already use JSON, and provides a smooth upgrade path from JSON to JSON-LD. It enables the creation of more easily interoperable Web services, the ability to store Linked Data in JSON-based storage engines, and brings more meaningful data to Web services and APIs.
• JSON-LD 1.1 Processing Algorithms and API defines an Application Programming Interface (API) for developers implementing a set of algorithms for programmatic transformations of JSON-LD documents.
• JSON-LD 1.1 Framing allows developers to query a JSON-LD document’s contained graph, by example, and reshape output into a specific JSON tree layout.
• Streaming JSON-LD discusses the processing of JSON-LD in a streaming manner. Concretely, a set of guidelines is introduced for efficiently serializing and deserializing JSON-LD in a streaming way. These guidelines are encapsulated in a JSON-LD streaming document form, and a streaming RDF form. These forms, when they are detected, allow implementations to apply streaming optimizations.

Comments on the Proposed Recommendations are welcome through 18 June 2020.

The Web Applications Working Group has published a First Public Working Draft of Image Resource. This document defines the concept of an “image resource” and a corresponding WebIDL ImageResource dictionary. Web APIs can use the ImageResource dictionary to represent an image resource in contexts where an HTMLImageElement is not suitable or available (e.g., in a Worker).

The Accessibility Guidelines Working Group has published a First Public Working Draft of Challenges with Accessibility Guidelines Conformance and Testing, and Approaches for Mitigating Them. This document explores how testability and page-based conformance verification of the WCAG 2.0 and 2.1 accessibility guidelines are challenging to apply to a broad range of websites and web applications. It also explores approaches for mitigating these challenges, to realize as accessible a site as possible.

W3C announced today the W3C/OGC Joint Workshop Series on Maps for the Web, in September & October, 2020. The event is hosted by Natural Resources Canada.

The workshop will be online only, spread out over a month of video presentations and asynchronous discussion. Attendance is free for all invited participants and is open to the public, whether or not W3C members.

This workshop series brings together experts in geographic standards and Web map data services, Web mapping client tools and applications, and Web platform standards and browser development, to explore the potential of maps for the Web.

Expected topics of discussion include:

• Adding a native map viewer for the Web platform, similar to how HTML <video> was added for video content;
• Standardizing how a browser-based map viewer fetches data from map services and how that data should be formatted;
• Creating accessible Web map experiences that adapt to the different ways people interact with the Web;
• Creating truly global Web map experiences that work with different languages and cartographic practices;
• Limiting privacy and security impacts of a more geo-enhanced Web.

For more information on the workshop, please see details and submission instructions. Expression of Interest and position statements are due by 30 June 2020 and registration applications accepted until 31 August 2020.

The CSS Working Group has published a First Public Working Draft of CSS Box Model Module Level 4. This specification describes the margin and padding properties, which create spacing in and around a CSS box. It may later be extended to include borders (currently described in [css-backgrounds-3]).

CSS is a language for describing the rendering of structured documents (such as HTML and XML) on screen, on paper, etc.

The Web of Things Working Group has published Web of Things (WoT) Architecture and Web of Things (WoT) Thing Description as W3C Recommendations, thus enabling easy integration across Internet of Things platforms and applications. The WoT Architecture specification describes the abstract architecture for the W3C Web of Things, while the WoT Thing Description describes the metadata and interfaces of Things, where a Thing is an abstraction of a physical or virtual entity that provides interactions to and participates in the Web of Things.

These solutions are already deployed in products today. The Web of Things is applicable to multiple IoT domains, including Smart Home, Industrial, Smart City, Retail, and Health applications, where usage of the W3C WoT standards can simplify the development of IoT systems that combine devices from multiple vendors and ecosystems. Please read more in our Press Release.