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w3.org
https://www.w3.org/
W3C
The World Wide Web Consortium (W3C) develops standards and guidelines to help everyone build a web based on the principles of accessibility, internationalization, privacy and security.
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w3.org
https://www.w3.org/standards/
Web Standards | W3C
W3C web standards are optimized for interoperability, security, privacy, web accessibility, and internationalization. W3C's proven web standards process is based on fairness, openness, royalty-free, we make the web work — for everyone. Learn about the potential and promises of web standards.
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w3.org
https://www.w3.org/about/
About us | W3C - World Wide Web Consortium (W3C)
W3C's global standards constitute the toolkit for web solutions that scale, enabling innovators to solve hard problems, providing the proper foundations to meet requirements for accessibility, internationalization, privacy, and security on the web.
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w3.org
https://validator.w3.org/
The W3C Markup Validation Service
The W3C validators rely on community support for hosting and development. Donate and help us build better tools for a better web.
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w3.org
https://www.w3.org/developers/
Developers | W3C
Learn directly from W3C and master the foundational programming languages for Web development -- HTML5, CSS and JavaScript -- with the W3C "Front-End Web Developer" (FEWD) Professional Certificate program which consists in 5 courses.
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w3.org
https://www.w3.org/TR/
W3C standards and drafts | W3C
The World Wide Web Consortium (W3C) is an international community where Member organizations, a full-time staff, and the public work together to develop Web standards.
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w3.org
https://www.w3.org/standards/about/
About W3C web standards
This page explains more about W3C web standards, including the value of creating open web standards at the World Wide Web Consortium.
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w3.org
https://www.w3.org/about/history/
History | About us | W3C
The new organization also preserves the core process and mission of the Consortium to shepherd the web, by developing open web standards as a single global organization with contributions from W3C Members, staff, and the international community.
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w3.org
https://www.w3.org/WAI/
Home | Web Accessibility Initiative (WAI) | W3C
Accessibility resources free online from the international standards organization: W3C Web Accessibility Initiative (WAI).
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w3.org
https://www.w3.org/developers/tools/
Validators and tools | Developers | W3C
Stack Overflow has a great and active community focused around W3C Standards and W3C developer tools. To ask a question to the W3C Community, we invite you to use the w3c tag.