surface,recommended_format,size_or_ratio,pre_publish_check,next_path
web article,PNG/SVG,1200x630 or inline SVG,text remains readable at feed size,open guide
mobile app,PNG/SVG/JSON,phone width first,tap targets and labels fit,send to shelf
short video,PNG/MP4/SRT,9:16 or 16:9,safe zones are respected,open video tool
presentation,PNG/SVG/HTML,16:9,contrast works on projector,export deck asset
