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Atom is better than RSS, in ways that matter

Hacker News 1 day ago 4 min read ↗ Original

WHY IT MATTERS

Engineers building or consuming syndication feeds face real interoperability failures with RSS: titles containing characters like < or & or HTML markup cannot be reliably expressed because different implementations handle them differently. Atom's explicit text construct types remove this ambiguity, making feeds behave predictably.

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The three things worth knowing

Atom's text construct system explicitly defines whether content is plain text, entity-encoded HTML, or XHTML, while RSS provides no encoding semantics for titles, making markup in titles unreliable across implementations.

RSS lacks a clear distinction between summary and full item content, relying on heuristics that harm interoperability, whereas Atom provides explicit semantics for this distinction.

Podcasts remain locked into RSS because Apple's podcast directory never supported Atom and removed any partial support by 2023, freezing the ecosystem on a technically inferior format.