Rebuild a thumbnail for Shorts or a community post
Upload a finished thumbnail and pick the shape you need. The AI rebuilds the composition for that shape — same subject, same mood, same wording. It is not a crop: the scene is repainted, so faces and background details will differ from the original.
Need the thumbnail itself, not just a new shape? BYSO writes the SEO and draws three cover options from your video.
Open BYSO →