ogexpiresin

ogexpiresin is a non-standard Open Graph meta tag that signals how long a page’s Open Graph preview should be considered valid. It is not defined in the official Open Graph Core Specification and is not widely adopted, but some platforms and content delivery networks have experimented with it to improve cache freshness of shared previews.

The tag is expressed as a meta element, for example: <meta property="ogexpiresin" content="3600" />, with the content value interpreted as a duration in seconds for which the corresponding Open Graph object should be treated as fresh by caches and preview renderers. Because there is no formal definition, platforms may apply the value differently, if at all.

Compatibility and status: Because it is non-standard, support is inconsistent. There is no official documentation from major Open Graph implementers, and widely used social networks typically ignore it. Some enterprise content delivery networks or experimental integrations may recognize it, but behavior varies and cannot be relied on for cross-platform guarantees.

Practical use and alternatives: If you choose to experiment with ogexpiresin, validate behavior across target platforms and monitor cache performance carefully. For reliable cache control, prefer HTTP caching headers (Cache-Control, ETag) and versioned URLs or query parameters to force refreshes when content changes. Given its non-standard nature, developers should document its usage clearly and consider fallback strategies to ensure consistent previews when the tag is ignored. See also Open Graph Protocol, og: tags, and caching practices.

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