'gm convert' in 1.5 and 1.7
Angelo Graziosi
angelo.graziosi@alice.it
Sat Oct 3 15:16:00 GMT 2009
I have noticed different results in size using 'gm convert', from JPG to
PDF, in Cygwin 1.5 and in 1.7. For example, in Cygwin-1.5
$ gm convert -page 595x842! test.jpg test.jpg.pdf
$ ls -lrt
[...]
-rw-r--r-- 1 graziosi Users 351268 Sep 6 2008 test.jpg
-rw-r--r-- 1 graziosi Users 296578 Oct 3 16:49 test.jpg.pdf
On Cygwin-1.7:
$ gm convert -page 595x842! test.jpg test.jpg.pdf
$ ls -lrt
[...]
-rw-r--r-- 1 graziosi Users 351268 6 Sep 2008 test.jpg
-rw-r--r-- 1 graziosi Users 1524227 3 Oct 16:50 test.jpg.pdf
So, on 1.5, 'test.jpg.pdf' has a size of 292K, instead on 1.7 it has a
size of 1.5M!
Why this difference?
I have attached a simple test case with which one should reproduce the
things, but this big discrepancy happens with all JPG files I have tried.
I discovered the above trying to convert many JPG files to PDF and then
creating a single PDF with 'pdftk'. But on Cygwin 1.7 the resulting
final PDF is very very big (image 100 JPGs...)!!
Cheers,
Angelo.
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