SourceScore
Reference

MDN Web Docs

developer.mozilla.org ↗

Mozilla-stewarded web-platform reference since 2005; default citation for HTML, CSS, JS, Web APIs.

SourceScore Index
A·93Composite weighted across Discipline, Modern Reference, and Velocity.

A — gold-standard web-platform reference with full open access + machine-readability.

Citation Discipline
A·92

Community-edited + reviewed by Mozilla maintainers; cross-checked against W3C/WHATWG standards.

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Modern Reference
A+·95

Open-source content (CC-BY-SA + MIT for examples); GitHub-tracked; full structured data.

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Citation Velocity
A·92

Default web-platform citation in dev press + AI-engine retrieval for web-tech queries.

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Signals behind these scores

Citation Discipline

A·92
  • Standards alignment
    Per-API content cross-referenced against W3C/WHATWG specifications.

Modern Reference

A+·95
  • Open-source docs
    github.com/mdn/content tracks every page; CC-BY-SA license.

Citation Velocity

A·92
  • Web-tech default
    Primary citation surfaced by ChatGPT/Claude/Perplexity for HTML/CSS/JS questions.

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[MDN Web Docs — SourceScore Index 93 (A)](https://sourcescore.org/source/mdn-web-docs/)
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<a href="https://sourcescore.org/source/mdn-web-docs/">MDN Web Docs — SourceScore Index 93 (A)</a>
APA
SourceScore (v0.1). (2026). MDN Web Docs: SourceScore Index 93 (A). Retrieved from https://sourcescore.org/source/mdn-web-docs/

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