A supplied thumbnail
The cover is the image attached to a video by the source. It may have text, a crop or a different aspect ratio from the video itself.
Original format
Download uses the format exposed by the source. Kuyom does not promise a PNG or higher resolution when X supplies a JPEG cover. Review the actual preview before saving.
Not a frame extractor
The tool does not extract a chosen frame or remove watermarks. Permission to view a post is separate from the right to reuse its cover in another publication.