Developers corner
Tutorials
- CSS3 tutorials
- RDF tutorial
- HTML5 tutorials
- RSS tutorial
- XHTML5 tutorial
- XHTML+RDFa tutorial
- Semantic Web tutorial
- Web accessibility tutorial
- Website standardization tutorial
Validators, checker tools
- Unified validation: W3C Unicorn (unified validator - markup + CSS + feed)
- Markup: W3C markup validator | WDG HTML validator
- CSS: W3C CSS validator
- I18N: I18N Checker
- Hyperlinks: W3C link checker
- RDF: RDF validator
- Feeds: W3C feed validator | ATOM and RSS validator
- Accessibility: A-Checker | A-Prompt | Acc - an Accessibility Evaluator | AccessColor | Accessibility color wheel | Accessibility Wizard | AccessValet | WebAIM WAVE
Document Type Definitions (DTDs)
The most widely used document types are summerized below.
| Markup/combination | W3C Recommendation | Document Type Definition |
|---|---|---|
| HTML5 | The HTML5 Working Draft | – |
| XHTML 1.0 Strict | The XHTML 1.0 Recommendation | DTD |
| XHTML 1.0 Transitional | The XHTML 1.0 Recommendation | DTD |
| XHTML 1.0 Frameset | The XHTML 1.0 Recommendation | DTD |
| XHTML 1.1 | The XHTML 1.1 Recommendation | DTD |
| XHTML 2.0 | The XHTML 2.0 Recommendation | DTD |
| XHTML+RDFa | The XHTML+RDFa Recommendation | DTD |
| XHTML+MathML+SVG | The XHTML 1.1 + MathML 2.0 + SVG 1.1 profile (Working Draft) | DTD |
| XHTML5 | The XHTML5 Working Draft | – |
XML document templates
| Version | Descriptive name | Status | Date |
|---|---|---|---|
| XHTML 1.0 | A Reformulation of HTML 4 in XML 1.0 | R | 26/01/00 r. 01/08/02 |
| XHTML 1.1 | Module-based XHTML | R | 31/05/01 |
| XHTML 2.0 (XHTML2) | – | WD | 26/07/06 |
| XHTML 1.1 + MathML 2.0 | XHTML 1.1 plus MathML 2.0 | ||
| XHTML 1.1 + MathML 2.0 + SVG 1.1 | An XHTML + MathML + SVG Profile | WD | 09/08/02 |
| XHTML-MP 1.2 | XHTML Mobile Profile | R | 29/07/08 |
| XHTML-Print | XHTML for Printing | R | 20/09/06 |
| XHTML+RDFa 1.0 | RDFa in XHTML | R | 14/10/08 |
| XHTML+RDFa 1.1 | Support for RDFa via XHTML Modularization | WD | 03/08/10 |
| XHTML5 | A vocabulary and associated APIs for XHTML | WD | 24/06/10 |
R: W3C Recommendation WD: W3C Working Draft r: revised
