PDF to PNG converter

Kostko · 04-28-2003, 09:01 AM

Does a program for converting PDF files to PNG exist for linux ? I prefer one that can be used in a console, so i can use it in a script.

nakkaya · 04-28-2003, 02:13 PM

u can convert pdf to ps and then to png with gimp but i am not sure just an idea

Kostko · 04-28-2003, 02:31 PM

well, i have found a solution, convert tool from ImageMagick can do this, so i used it and it works great !

mtb · 04-30-2003, 09:01 AM

Also with the netpbm package.

1st) pdf2ps

2nd) pstoppm

3rd) ppmtopng -compression 9

This way is usually faster [ imagemagick is very very slow, and for this way you can create a script ]

Quote:

Originally posted by Kostko
well, i have found a solution, convert tool from ImageMagick can do this, so i used it and it works great !

Kostko · 05-02-2003, 04:22 AM

Quote:

Originally posted by mtb
Also with the netpbm package.

1st) pdf2ps

2nd) pstoppm

3rd) ppmtopng -compression 9

This way is usually faster [ imagemagick is very very slow, and for this way you can create a script ]

so where can i get pstoppm and ppmtopng ? because i have netpbm package installed (in debian woody) but i don't have these commands.

---- EDIT ----
is it possible that it is pnm instead of ppm ? well it works, but is there a way to set the resolution (in dpi), because current results are pretty crappy

mtb · 05-02-2003, 02:12 PM

Yes, excuse me it's pnm ( for what i understand ppm it's the same of pnm with a different name, even if i'm not sure - but i've wrote some image filters and they work fine on both ).

For the res i'll check ( windows now, crap modem ), but i think there is some option ( like in bmv, for this viewer is -r300 (eg.) where 300 is the # of dots per inch ) to modify the dpi.

Quote:

Originally posted by Kostko
so where can i get pstoppm and ppmtopng ? because i have netpbm package installed (in debian woody) but i don't have these commands.

---- EDIT ----
is it possible that it is pnm instead of ppm ? well it works, but is there a way to set the resolution (in dpi), because current results are pretty crappy

Kostko · 05-03-2003, 05:16 AM

well, i hope that this is really faster, because i need to convert about 108000 pdf files to png and imagemagick is slow (10 sec per file) :P

Kostko · 05-03-2003, 10:47 AM

ok, i have tried with:
gs -dSAFER -dBATCH -dNOPAUSE -sDEVICE=pnggray -r300-sOutputFile=out.png in.pdf

and it sort of works, but the width and height of the pict is too big. is it possible to get the same output as if i do:

convert -density 300x300 -resize 1000x1000 in.pdf out.png

?

mtb · 05-03-2003, 12:12 PM

I don't know. I have tried with:

pstopnm -xsize 1024 ( for example ) and you obtain a quite small file.

Quote:

Originally posted by Kostko
ok, i have tried with:
gs -dSAFER -dBATCH -dNOPAUSE -sDEVICE=pnggray -r300-sOutputFile=out.png in.pdf

and it sort of works, but the width and height of the pict is too big. is it possible to get the same output as if i do:

convert -density 300x300 -resize 1000x1000 in.pdf out.png

?

Kostko · 05-03-2003, 12:33 PM

well, still the bast quality and small png file is if i use imagemagick, but it takes about 10 seconds to process a single pdf file and i need to convert a huge amount of files and now it would take me about 2 weeks to complete the whole stuff on a 2ghz athlon. so is this the only choice ?

mtb · 05-05-2003, 06:23 AM

I don't know what else i can suggest.

Maybe xnview [ a friend of mine told me something about this software ] - or irfan view for win?

Quote:

Originally posted by Kostko
well, still the bast quality and small png file is if i use imagemagick, but it takes about 10 seconds to process a single pdf file and i need to convert a huge amount of files and now it would take me about 2 weeks to complete the whole stuff on a 2ghz athlon. so is this the only choice ?