Sorry I cannot really help you any more
No it does not. The default is 100 ppi but any ppi can be used. The important bit is the underlying image size used to generate the pdf. As in:-
The print size @ 300 ppi is what you want 150 mm x 250 mm
see above
You already have ImageMagick, convert is ImageMagick
edit: Ok I often use old software as well, but not a lot of sympathy
Try as before but slightly amended
Quote:Ok, I used the convert application and it also generated a pdf with 591x984 100 dpi images!
No it does not. The default is 100 ppi but any ppi can be used. The important bit is the underlying image size used to generate the pdf. As in:-
Quote:Using pdftoimage with the pdf produced by jpg2pdf, I end with two .jpg of size 1182 × 1969 and 72dpi
The print size @ 300 ppi is what you want 150 mm x 250 mm
Quote:Their print size is crazy, 16.417 x 27.438 inches! The print size inside both pdf is 5.9 x 9.840 inches. The original 3000 pixel images have a print size of 5.907 x 9.844 inches.
see above
Quote:I do not have ImageMagic. Shall I go after ImageMagick first?
You already have ImageMagick, convert is ImageMagick
edit: Ok I often use old software as well, but not a lot of sympathy
Try as before but slightly amended
Code:
convert *.png -density 300 2page.pdf