reducing JPGE file size

[peterbradd]

I need my JPEG's to be less than 3mb, remaining 300DPI and 4x6.
I have 132 JPEG's

I entered:

peter-bradds-powerbook-g4-15:/users/peter/desktop/temp peter$ mogrify -density 300 jpg -quality 98 *.jpg
mogrify: unable to open image `jpg': No such file or directory @ blob.c/OpenBlob/2480.

What am i doing wrong?

[fmw42]

try

mogrify -format jpg -density 300 -quality 98 *.jpg

adjust -quality to reach the filesize you need.

Also recommend that you use -path to some other directory, so you don't overwrite your original images.

make a new directory (say test2), cd to the first directory containing your images (say test1)

mogrify -path /pathto/test2 -format jpg -density 300 -quality XX *.jpg

Note mogrify is dangerous if used wrong, you can lose all your originals

see http://www.imagemagick.org/Usage/basics/#mogrify

[peterbradd]

Hi this is what I received

peter-bradds-powerbook-g4-15:/users/peter/desktop/temp peter$ mogrify -path /pathto/test2 -format jpg -density 300 -quality 98 *.jpg
mogrify: unable to open image `/pathto/test2/0566CKCS 4"x6" Postcards_EURW-5.jpg': No such file or directory @ blob.c/OpenBlob/2480.

Thanks in advance.

[fmw42]

"pathto" was just a placeholder for you to put your actual path to whatever new directory you build