Batch Resize - Revision history

Marcin: /* mogrify */

2026-03-01T21:18:28Z

mogrify

← Older revision		Revision as of 21:18, 1 March 2026
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	Go into Terminal and change directory to folder with your pictures with whatever percentage reduction yuou need - here it is 25%:		Go into Terminal and change directory to folder with your pictures with whatever percentage reduction yuou need - here it is 25%:

	mogrify -resize 50% * -format jpg *		mogrify -resize 80% * -format jpg *

	To switch to another format - jpg may be replaced with other formats.		To switch to another format - jpg may be replaced with other formats.

2025-06-13T15:04:31Z

mogrify

← Older revision		Revision as of 15:04, 13 June 2025
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	Go into Terminal and change directory to folder with your pictures with whatever percentage reduction yuou need - here it is 25%:		Go into Terminal and change directory to folder with your pictures with whatever percentage reduction yuou need - here it is 25%:

	mogrify -resize 25% *		mogrify -resize 50% * -format jpg *

	To switch to another format - jpg may be replaced with other formats.		To switch to another format - jpg may be replaced with other formats.

2025-06-13T14:59:50Z

mogrify

← Older revision		Revision as of 14:59, 13 June 2025
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	mogrify -resize 50% -format jpg *		mogrify -resize 50% -format jpg *

			==Notes==
			6/25 - installed with sudo apt install graphicsmagick-imagemagick-compat

	=Links=		=Links=

2018-07-01T02:23:45Z

Imagemagick

← Older revision		Revision as of 02:23, 1 July 2018
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	To install ImageMagick, go to Terminal and type: (on Debian/Ubuntu based systems)		To install ImageMagick, go to Terminal and type: (on Debian/Ubuntu based systems)

	~~'''~~sudo apt-get install imagemagick		<pre>
			sudo apt-get install imagemagick
			</pre>

	To resize only, go to the directory of interest:		To resize only, go to the directory of interest and execute a command using find and convert, like so:

			Note: This will permanently alter all of your image files! Make sure to copy your image files to a duplicate 'working' directory before running this command. Do '''not''' run these commands in the directory where your original files live.

	<pre>		<pre>

2018-07-01T02:09:15Z

Imagemagick

← Older revision		Revision as of 02:09, 1 July 2018
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	To resize only, go to the directory of interest:		To resize only, go to the directory of interest:

	# most robust; handles portrait & landscape images.786433 = 1024*768+1		<pre>
			# most robust; handles portrait & landscape images of various dimensions
			# 786433 = 1024*768+1
	find . -maxdepth 1 -iname '*.jpg' -exec convert {} -resize '786433@>' {} \;		find . -maxdepth 1 -iname '*.jpg' -exec convert {} -resize '786433@>' {} \;

	~~'''~~find . -maxdepth 1 -iname '*.jpg' -exec convert {} -resize 1024x768 {} \;		# or use this if all the photos are the same orientation
			find . -maxdepth 1 -iname '*.jpg' -exec convert {} -resize 1024x768 {} \;
			</pre>

	To resize and convert to another format (example converts JPEG to PNG):		To resize and convert to another format (example converts JPEG to PNG):

	~~'''~~find . -iname '*.jpg' -exec convert {} -resize 640x480 {}.png \;		<pre>
			find . -iname '*.jpg' -exec convert {} -resize 640x480 {}.png \;
			</pre>

	=mogrify=		=mogrify=

2018-07-01T02:07:43Z

Imagemagick

← Older revision		Revision as of 02:07, 1 July 2018
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	To resize only, go to the directory of interest:		To resize only, go to the directory of interest:

	~~'''~~find . -iname '*.jpg' -exec convert {} -resize ~~1024x768~~ {} \;		# most robust; handles portrait & landscape images.786433 = 1024*768+1
			find . -maxdepth 1 -iname '*.jpg' -exec convert {} -resize '786433@>' {} \;

	'''find . -iname '*.jpg' -exec convert {} -resize ~~960x720~~ {} \;		'''find . -maxdepth 1 -iname '*.jpg' -exec convert {} -resize 1024x768 {} \;

	To resize and convert to another format (example converts JPEG to PNG):		To resize and convert to another format (example converts JPEG to PNG):

2018-07-01T01:55:08Z

← Older revision		Revision as of 01:55, 1 July 2018
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	As of 2018, the OSE wiki has a strict upper file size limit of 1M as our [[OSE Server]] infrastructure is operating on a very limited budget. For more information on why this is necessary, see [[Mediawiki#$maxUploadSize]]		As of 2018, the OSE wiki has a strict upper file size limit of 1M as our [[OSE Server]] infrastructure is operating on a very limited budget. For more information on why this is necessary, see [[Mediawiki#$maxUploadSize]]

			These commands can trivialize the process of doing a bulk resize of images before uploading to the wiki.

	=Imagemagick=		=Imagemagick=

2018-06-15T22:08:07Z

Imagemagick

← Older revision		Revision as of 22:08, 15 June 2018
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	To resize only, go to the directory of interest:		To resize only, go to the directory of interest:

	'''find . -iname '*.jpg' -exec convert {} -resize ~~640x480~~ {} \;		'''find . -iname '*.jpg' -exec convert {} -resize 1024x768 {} \;

	'''find . -iname '*.jpg' -exec convert {} -resize 960x720 {} \;		'''find . -iname '*.jpg' -exec convert {} -resize 960x720 {} \;

2018-06-15T22:02:29Z

← Older revision		Revision as of 22:02, 15 June 2018
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	'''find . -iname '*.jpg' -exec convert {} -resize 640x480 {}.png \;		'''find . -iname '*.jpg' -exec convert {} -resize 640x480 {}.png \;

			=mogrify=
			Go into Terminal and change directory to folder with your pictures with whatever percentage reduction yuou need - here it is 25%:

			mogrify -resize 25% *

			To switch to another format - jpg may be replaced with other formats.

			mogrify -resize 50% -format jpg *

			=Links=

			* http://bdhacker.wordpress.com/2011/01/04/resize-multiple-images-in-a-folder-batch-image-resize-in-ubuntu/
			* http://www.imagemagick.org/Usage/basics/#mogrify

			[[Category:Documentation Process]]

2018-06-15T21:55:21Z

Why

← Older revision		Revision as of 21:55, 15 June 2018
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	=Why=		=Why=

	As of 2018, the OSE wiki has a strict upper file size limit of 1M as our [[OSE Server]] infrastructure is operating on a very limited budget. For more information on why this is necessary, see [[Mediawiki#~~.24maxUploadSize~~]]		As of 2018, the OSE wiki has a strict upper file size limit of 1M as our [[OSE Server]] infrastructure is operating on a very limited budget. For more information on why this is necessary, see [[Mediawiki#$maxUploadSize]]

	=Imagemagick=		=Imagemagick=