{"version":"2.1.251","anchor":"artifact-publishing-can-attach-page-thumbnails-switched-off-","canonical_anchor":"artifact-publishing-can-attach-page-thumbnails-switched-off-","heading":"Artifact publishing can attach page thumbnails, switched off in this build","tier":"soon","area":"Artifacts","scope":null,"heads_up":null,"url":"https:\/\/changelogs.core-directive.com\/v\/2.1.251\/e\/artifact-publishing-can-attach-page-thumbnails-switched-off-","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.1.251","markdown":"### Artifact publishing can attach page thumbnails, switched off in this build\n\nPublished pages could carry light and dark thumbnails, but the feature is off.\n\n**What**\n\nPublishing a plain page can now scan it for declared thumbnail tags and attach a light and a dark thumbnail alongside the page. The whole path sits behind the remote config flag `tengu_cobalt_plinth_campion`, which defaults to false in this build, so no publish attaches thumbnails unless the server turns it on.\n\n**Details**\n\n- Applies only to plain pages, not typed artifacts or live docs.\n- Sends `thumbnail` and `thumbnailDark` fields with the publish call.\n- Thumbnails that cannot be read are reported back as publish warnings rather than failing the publish.\n- Resolved thumbnail links are tracked in a per-publish cache.\n\n**Evidence**\n\n`gatedThumbnailHrefs: new Map()`\n\n- Flag `tengu_cobalt_plinth_campion`: Not enough to say (read for one account on one subscription tier against v2.1.251; this account: no value returned, anonymous baseline: no value returned, compiled default: off)\n- Area: Artifacts\n- Tier: Nothing to try yet\n- Useful: 2\/5\n- Signal: 4\/5\n- Present in the build but not switched on"}