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Metadata - Glossary | MDN 1/3 https://developer.mozilla.org/en-US/docs/Glossary/Metadata reference web, html, css, javascript, documentation 2026-05-05T05:37:40.221485+00:00 kb-cron

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Metadata

Metadata is — in its very simplest definition — data that describes data. For example, an HTML document is data, but HTML can also contain metadata in its <head> element that describes the document — for example who wrote it, and its summary.

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