While http://www.planetpdf.com/enterprise/article.asp?ContentID=creating_large_format_pdf_docu tells you how I create such using a few apps, I set the page size either in my apps or CutePDF, DoPDF or similar.
I want to convert png file to pdf.
The image size is 649 x 147 000.
All converters try to make one pdf page, while it should be converted to multi-page, long pdf, otherwise nothing is visible, and there is a lot of space left blank.The width of image should be the width of pdf. Any hints ?