Resize Image Nautilus Script
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This script resizes selected files to the given pixel width/height and saves
them with the same file name in a new sub folder (e.g. "800px"). Existing files
in resize target sub folder will not be overwritten.

Usage
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  1. Select one or more image files in Nautilus (GNOME file manager)
  2. Click right mouse button
  3. Select sub menu "Scripts"
  4. Select resize option, e.g. "Resize Image (800px)"
  5. Wait for files to process
  6. Find resized images in new sub folder of current folder, e.g. "800px"

Installation
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  1. Extract files to ~/.gnome2/nautilus-resize-image/ (.gnome2 folder in your
     home directory)
  2. Make sure ResizeImage.sh is excutable:
       $ chmod 755 ~/.gnome2/nautilus-resize-image/ResizeImage.sh
  3. Create nautilus-scripts folder if it does not exist yet:
       $ test -e ~/.gnome2/nautilus-scripts/ || mkdir ~/.gnome2/nautilus-scripts/
  4. Create symbolic links:
       $ cd ~/.gnome2/nautilus-scripts
       $ ln -s ../nautilus-resize-image/ResizeImage.sh "Resize Image (800px)"
       $ ln -s ../nautilus-resize-image/ResizeImage.sh "Resize Image (1024px)"
  5. Done! "Resize Image (800px)" and "Resize Image (1024px)" will now appear
     in the "Scripts" submenu when right-clicking a file or file selection

Requirements/dependencies
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  * Gnome 2.x
  * ImageMagick (convert, identify)
  * Zenity
  * Bash

More sizes
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If you would like to add more sizes to select from in the context menu, follow
these steps:

  1. Edit ResizeImage.sh and add the desired image size at the SIZES definition
     at the top, e.g. "SIZES=(480 800 1024)". Separate sizes with a space.
  2. Create a new symbolic link with the new size somewhere in the name (it
     will be matched automatically):
       $ cd ~/.gnome2/nautilus-scripts
       $ ln -s ../nautilus-resize-image/ResizeImage.sh "Reduce image to 480 px"

Note: If you have sizes that contain the same digits, e.g. 1666 and 666,
you need put the larger size first. So in this example: "SIZES=(1666 666)".

Image quality
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The default quality for image conversion is 70%. Adjust the "QUALITY=70" line
in ResizeImage.sh to suit your needs.

Script homepage
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  * http://benn.org/software/nautilus-resize-image

Version history
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1.0 (19 Aug 2009)
  * Initial release