{"version":"2.1.251","anchor":"custom-thumbnails-when-publishing-an-artifact","canonical_anchor":"custom-thumbnails-when-publishing-an-artifact","heading":"Custom thumbnails when publishing an artifact","tier":"use","area":"Artifacts","scope":null,"heads_up":null,"url":"https:\/\/changelogs.core-directive.com\/v\/2.1.251\/e\/custom-thumbnails-when-publishing-an-artifact","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.1.251","markdown":"### Custom thumbnails when publishing an artifact\n\nYou can publish an artifact with your own light and dark thumbnail images.\n\n**What**\n\nPublishing an artifact can now carry your own thumbnail images, one for light and one for dark. They must be PNG or JPG and under a size cap, and if the server refuses the custom image the publish is retried automatically with the auto-generated screenshot and a warning.\n\n**Details**\n\n- Thumbnail and thumbnailDark are validated by a new check on both the image link and its content, limited to PNG\/JPG with size caps.\n- A server rejection comes back as a distinct thumbnail_rejected reason, which triggers the retry rather than failing the publish.\n\n**Evidence**\n\n`The custom thumbnail was not accepted by the server`\n\n- Area: Artifacts\n- Names: `thumbnail`, `thumbnailDark`\n- Tier: Use it now\n- Useful: 4\/5\n- Signal: 3\/5"}