{"version":"2.1.321","anchor":"artifact-upload-attachments-carry-a-thumbnail-task-stopped","canonical_anchor":"artifact-upload-attachments-carry-a-thumbnail-task-stopped","heading":"File uploads can carry a thumbnail image; stopped-task message no longer blames the user","tier":"notice","area":"Background Tasks","scope":"individual","heads_up":false,"url":"https:\/\/changelogs.core-directive.com\/v\/2.1.321\/e\/artifact-upload-attachments-carry-a-thumbnail-task-stopped","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.1.321","markdown":"### File uploads can carry a thumbnail image; stopped-task message no longer blames the user\n\nUploaded attachments can now include a JPEG thumbnail preview, and the stopped-task reminder simply says the task was stopped\n\n**What**\n\n- Thumbnails: when Claude Code uploads a file as an attachment, the upload can now include an optional thumbnail JPEG (a small preview picture, sent as `thumbnail.jpg`) next to the file itself. Upload attachments pass a checked `thumbnail` field along. Before, only the file was sent.\n\n- Stopped-task reminder: the note Claude receives when a task stops now reads `Task \"...\" (...) was stopped.`. It used to say `was stopped by the user.`.\n\n**Why**\n\nUploaded files can come with a preview image. Claude is no longer told that you stopped a task when something else may have stopped it.\n\n- Area: Background Tasks\n- Tier: You'll notice\n- Useful: 2\/5\n- Signal: 3\/5\n- Scope: individual\n- Heads-up: no"}