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The Markup Validation Service is a validator by the World Wide Web Consortium (W3C) that allows Internet users to check pre-HTML5 HTML and XHTML documents for well-formed markup against a document type definition (DTD). Markup validation is an important step towards ensuring the technical quality of web pages.
The W3C is the main international standards organization for the internet— they provide the W3C Markup Validation Service. Simply copy the full URL of the page to be validated and paste in into the validator. There is also a favelet that you can add to your browser bookmarks that will validate the current page.
This template creates a page link to the W3C Markup Validation Service. Note that pages will always be validated against the default skin, which is now Vector. Syntax is: {{W3C validation|pagename}} For example, to validate this page:
Thing Description editing and validation tools Eclipse edi{TD}or: [14] A tool for simply designing W3C Thing Descriptions and Thing Models; TD Playground: [15] Playground for validation of Thing Description instances; Implementations using Thing Description Eclipse node-wot: [16] An implementation of W3C WoT technologies in Node.js
W3C – Web Content Accessibility Guidelines (WCAG) 2.2; W3C – Web Accessibility Initiative (WAI) introduction to WCAG; Mauve, a free online accessibility validator, developed by HIIS Lab – ISTI of CNR of Pisa (Italy). WAVE – Online accessibility validator; WCAG 2.0 checklist
Saxon is an XSLT 3.0 and XQuery 3.1 processor with open-source and proprietary versions for stand-alone operation and for Java, JavaScript and .NET. A separate product Saxon-JS [39] offers XSLT 3.0 processing on Node.js and in the browser. xjslt is an open-source XSLT 2.0 compiler for JavaScript supporting Node.js and the browser.
Download QR code; Print/export ... W3C Recommendation [1] ... SHACL Playground is a free SHACL validation service implemented in JavaScript.
In 2007, the W3C's HTML working group voted to officially recognize HTML5 and work on it as the next-generation HTML standard. [8] In 2009, the W3C allowed the XHTML 2.0 Working Group's charter to expire, acknowledging that HTML5 would be the sole next-generation HTML standard, including both XML and non-XML serializations. [9]