[Gimp-user] Scaling image via the command line

[Claus Cyrny]

Sanjay Murthy wrote:
> Hi,
> 
> I wish to scale the 6MP images from my camera to a smaller size say 
> 600x800 to be loaded into my phone. How can this be done via command 
> line ? What are the switches (and arguments)  to be used ? I have 
> hundreds of images to be scaled. doing this with the GUI is impractical. 
> I have GIMP on Linux and Windows. I am reasonable linux literate . I 
> work on it for a living.

For this, I can recommend ImageMagick (http://www.imagemagick.org/).
The 'convert' command can do this, and by using a script you can
batch-process files. ImageMagick has an amazing number of options
where you can specify the output file format, the compression ratio,
compression algorithms, resolution, and much more.

Claus

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