Applescript to resize/greyscale Kindle Screensaver Files

doodlydood · 01-04-2011, 04:17 PM

Hello all,

When I first got my Kindle, I spent some time looking for a very (very!) simple way to batch convert my existing jpg files to greyscale (colour renders poorly on the Kindle) images of the appropriate size for my Kindle 3.

There are many options, but none of which were suitably easy to use. However, I did find that any joe can create an Applescript to do this. It's ridiculously easy.

As it may save other readers the notional effort of creating their own script, I attach mine. It outputs to a file called "Kindled" on the desktop. You may need to create such. Simply drag and drop any file or folder with source jpgs on it.

Good luck

Barney Stinson · 01-04-2011, 07:33 PM

You, good sir, are a gentleman and a scholar. I'm working on a website for Kindle Screensavers and I feel as if this'll come in really handy.

Edit: Ah, spoke to soon.

azit · 01-05-2011, 03:29 AM

Is imagemagick available for macosx? This is how I'd do it in linux:

$ convert -colorspace gray input.jpg output.jpg

and to resize as well:

$ convert -colorspace gray input.jpg -resize 800x600! output.jpg

soymicmic · 01-05-2011, 06:03 AM

I use this:

Code:

convert $FILE$ -colorspace Gray -resize 600x800> -gravity center -background Gray -extent 600x800 kindle_$NAME$.png

"!" --> aspect ratio KO

kranu · 01-05-2011, 08:53 PM

Quote:

Originally Posted by soymicmic

I use this:

Code:

convert $FILE$ -colorspace Gray -resize 600x800> -gravity center -background Gray -extent 600x800 kindle_$NAME$.png

"!" --> aspect ratio KO

So what do you want to do? Add border trims to the image?

soymicmic · 01-06-2011, 05:16 PM

Yes, I prefer to maintain the aspect-ratio and fill the remaining space with gray

kranu · 01-06-2011, 09:19 PM

Quote:

Originally Posted by soymicmic

Yes, I prefer to maintain the aspect-ratio and fill the remaining space with gray

Well, your choice. I prefer to crop them.

01-04-2011, 07:33 PM	#2
Barney Stinson ಠ_ಠ Posts: 5 Karma: 394 Join Date: Dec 2010 Device: Kindle	You, good sir, are a gentleman and a scholar. I'm working on a website for Kindle Screensavers and I feel as if this'll come in really handy. Edit: Ah, spoke to soon. Last edited by Barney Stinson; 01-04-2011 at 07:37 PM.

01-05-2011, 03:29 AM	#3
azit Member Posts: 16 Karma: 2600 Join Date: Dec 2010 Device: kindle	Is imagemagick available for macosx? This is how I'd do it in linux: $ convert -colorspace gray input.jpg output.jpg and to resize as well: $ convert -colorspace gray input.jpg -resize 800x600! output.jpg Last edited by azit; 01-05-2011 at 03:41 AM.

01-05-2011, 06:03 AM	#4
soymicmic Junior Member Posts: 7 Karma: 10 Join Date: Dec 2010 Device: AmazonKindle 3	I use this: Code: convert $FILE$ -colorspace Gray -resize 600x800> -gravity center -background Gray -extent 600x800 kindle_$NAME$.png "!" --> aspect ratio KO

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