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Set or generate a video thumbnail

Choose the preview frame for a video post. Auto-generate one from a frame, or upload your own. The Thumbnail submenu, step by step.

3 min read · last updated 2026-06
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The thumbnail is the still a shopper sees before a video plays, so it does a lot of the work of earning the click. On a video post, the Thumbnail action ("Set or generate a preview image") lets you auto-create one from a frame or upload your own.

Set a thumbnail

  1. Open the post’s menu. On a video post, click the three-dot actions menu.
  2. Open Thumbnail. Under the Edit section, hover Thumbnail to expand its submenu.
  3. Generate or upload. Choose Generate ("Auto-create from video frame") to let Idukki pick a frame, or Custom ("Upload your own preview image") to use your own image.
  4. Confirm. The new thumbnail becomes the post’s preview image in the widget.

Generate vs Custom

Generate auto-creates a thumbnail from a frame of the video, which is the fastest option. Custom lets you upload your own preview image when you want a branded or specific frame the auto-pick would miss.

  • Set up shoppable video: /help/shoppable-video-setup
  • Tag products in a video with Video Hotspot Tagging: /help/video-hotspot-tagging
  • Edit a post’s caption and details: /help/edit-a-post
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Set or generate a video thumbnail. Help — Idukki