{"service":"PDF Screenshot Service","version":"1.0.0","endpoint":"/screenshot","method":"POST","parameters":{"file":"PDF file upload (mutually exclusive with url)","url":"URL to PDF file (mutually exclusive with file)","pages":"Page numbers to render (e.g., '1', '1,3,5', '2-5')","format":"Image format: 'png' or 'jpeg'","dpi":"Resolution in DPI (72-600)","zip":"Force zip output even for single page"}}