picture resizer

[NiHaoMike]

Is there a program that automatically resizes pictures before copying them to my Rockbox device? My PC runs 64 bit Gentoo if it matters.

[bluebrother]

The obvious one: ImageMagick can do this.

[NiHaoMike]

The obvious one: ImageMagick can do this.

How do I have it process all pictures in a directory? There's over 6000 of them so there must be some automated way to do it.

[Chronon]

Mogrify might be what you want:
http://www.imagemagick.org/Usage/basics/#mogrify

[Yotto]

cd <directory with 6000 files>
md new
for %i in (*.jpg) do convert <switches> %i new\%i

That's for DOS (Windows command line). Linux would be similar in idea.
I don't know what switches specifically to use, but check help on "convert". I bet -size would do it.

**EDIT**

Just saw your gentoo comment

cd <directory with 6000 files>
mkdir new
for i in *.jpg; do convert <switches> $i new/$i; done;

Same disclaimer about the switches.

[achengms]

I use faststone to resize all my images in a folder. Its the best free image manipulation software.

[lestatar]

I use faststone to resize all my images in a folder. Its the best free image manipulation software.

+1 to this oldish thread.  Fastone is indeed quite nice and free.  2 flavors: an image viewer/basic editing program and a standalone batch capable image resizing app.

I have been using both for a long time.  Quite great - fast and works.