What Is This?

This is an HTML+RDFa representation of metadata describing this Web-addressable resource.

Why Is This Important?

The property (attributes and values pairs) links on this page unveil a different kind of link, one which enables the following on HTTP networks such as the Web:

  1. Unambiguous identity for entities (aka. strong identifiers)
  2. Implicit binding of an entity and its metadata via strong identifiers
  3. Multiple metadata representations that enable a variety of presentations
  4. High precision Search and Find queries that simply use the metadata documents (by referencing entity URIs) as the query's Data Source Name

How Do I Discover Alternative Metadata Representations?

This document exposes metadata in the following formats: (X)HTML+RDFa, Turtle, N3, RDF/JSON, or RDF/XML. In the most basic form, you can simply view the (X)HTML source markup of this page, and go directly to the <head/> section which contains a <link/> tag with relationship and type properties for each format.

In addition, you can also explicitly request a desired metadata representation for a given resource via HTTP GET requests that use the entity's strong identifier as the call target.

How Can I Expose My Web Resources In This Manner?

Simply include the following in the <head/> section of your (static or dynamically generated) (X)HTML page:

<link rel="alternate" title="My Data in RDF Linked Data form"
type="application/rdf+xml"
href="http://linkeddata.uriburner.com/about/id/<this-page-URL>/>"

How Is This Related To The Linked Data Meme?

As stated above, the links in this page expose strong identifiers for its primary topic, secondary topics, attributes, and some values. These links, via implicit association, act as conduits to their metadata-bearing documents, in a variety formats.

[OpenLink Software]

About: nodeID://b19033878

An Entity of Type : Content Class, from Data Source : https://www.w3.org/news/feed, within Data Space : dev.restore.ovi.cnr.it:8890

  • References
  • Referenced By
body relation

  • The Portable Network Graphics (PNG) Working Group invites implementations of an updated Candidate Recommendation Snapshot of Portable Network Graphics (PNG) Specification (Third Edition). This document describes PNG (Portable Network Graphics), an extensible file format for the lossless, portable, well-compressed storage of static and animated raster images. PNG provides a patent-free replacement for GIF and can also replace many common uses of TIFF. Indexed-color, greyscale, and truecolor images are supported, plus an optional alpha channel. Sample depths range from 1 to 16 bits.

    PNG is designed to work well in online viewing applications, such as the World Wide Web, so it is fully streamable with a progressive display option. PNG is robust, providing both full file integrity checking and simple detection of common transmission errors. Also, PNG can store color space data for improved color matching on heterogeneous platforms.

    This specification defines two Internet Media Types, image/png and image/apng.

    Comments are welcome via the GitHub issues by 13 May 2025.

source
  • https://www.w3.org/news/feed
type
  • Content Class
described by
  • https://www.w3.org/news/feed
content
  • Updated Candidate Recommendation: Portable Network Graphics (PNG) Specification (Third Edition)
Alternative Linked Data Views: Facets | iSPARQL | ODE     Raw Linked Data formats: CXML | CSV | RDF ( N-Triples N3/Turtle JSON XML ) | OData ( Atom JSON ) | Microdata ( JSON HTML) | JSON-LD
This material is Open Knowledge   W3C Semantic Web Technology     This material is Open Knowledge Creative Commons License Valid XHTML + RDFa
This work is licensed under a Creative Commons Attribution-Share Alike 3.0 Unported License.
OpenLink Virtuoso version 07.20.3231, on Linux (x86_64-generic_glibc25-linux-gnu), Single Edition