Batch Steps - Adding White Background for IE6

ie-white-background.txt

Quickie Steps (on Windows):

1. Click on Start > Run. Type "cmd" (no quotes) and press Enter. (You can also just press Windows Key + R for a shortcut).
2. Type "cd" (no quotes), press space, and drag the target folder into the command line. Press Enter.
3. Run this command:
	
	for /f "tokens=*" %i in ('dir *.png /a:-d /s /b') do (convert "%i" -background "rgb(255, 255, 255)" "%i" & "C:\pngout.exe" "%i" -kbKGD -y "%i")

Done!


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Full Walkthrough:

Step 1: Download and install ImageMagick (OS X, Unix, or XP)
http://www.imagemagick.org/script/binary-releases.php

Step 2: Download the PNGOut command line utility (OS X, Unix, or XP)
http://advsys.net/ken/utils.htm

Step 3: cd to your image directory

Step 4a: To individually add a background to an image, you can run this command:
	> convert image.png -background "rgb(255, 255, 255)" image.png

Just change 'image.png' to your image path.

To batch run on multiple files:

Step 4b: cd into image directory, then:

(Unix):

	> find . -name "*.png" -exec convert '{}' -background "rgb(255, 255, 255)" '{}' \; -print

(MS-DOS):

	> for /f "tokens=*" %i in ('dir *.png /a:-d /s /b') do (convert "%i" -background "rgb(255, 0, 0)" "%i")


Step 5: After conversion, you should always run PNGOut to re-compress the image. Converting will add a few kb to the image, and this step should shave off more than you've added.

Run pngout to recompress, but keep bKGD!:

(Unix):

	> find . -name "*.png" -exec /path/to/pngout '{}' -kbKGD -y '{}' \; -print

(MS-DOS):

	> for /f "tokens=*" %i in ('dir *.png /a:-d /s /b') do ("C:\pngout.exe" "%i" -kbKGD -y "%i")

Step 6: It's also possible to convert and immediately run PNGOut in batch mode:

(Unix):

	> find . -name "*.png" -exec convert '{}' -background "rgb(255, 255, 255)" '{}' \; -exec /path/to/pngout '{}' -kbKGD -y '{}' \; -print

(MS-DOS):

	> for /f "tokens=*" %i in ('dir *.png /a:-d /s /b') do (convert "%i" -background "rgb(255, 255, 255)" "%i" & "C:\pngout.exe" "%i" -kbKGD -y "%i")