{"id":952,"date":"2017-03-19T15:58:12","date_gmt":"2017-03-19T07:58:12","guid":{"rendered":"https:\/\/www.ceh-photo.de\/blog\/?p=952"},"modified":"2017-03-19T17:00:33","modified_gmt":"2017-03-19T09:00:33","slug":"script-for-embedding-watermarks-into-images-using-imagemagick-for-windows-and-linux","status":"publish","type":"post","link":"https:\/\/www.ceh-photo.de\/blog\/?p=952","title":{"rendered":"Batch processing – Resizing and embedding watermarks into images using ImageMagick for Windows and Linux"},"content":{"rendered":"

As a response to a recent question I came across, I want to share a simple bash script for embedding a watermark image\/logo and resizing multiple images at the same time for online publishing.<\/p>\n

In order to use the script below you need to install imagemagick and if you are using Windows you either have to install the cygwin environment or you would have to rewrite this simple script as a bat script.<\/p>\n

Cygwin: https:\/\/cygwin.com\/install.html<\/a><\/p>\n

Imagemagick: https:\/\/www.imagemagick.org\/script\/index.php<\/a>
\nIn most Linux systems you can just install it using your distros package manager, for instance<\/p>\n

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sudo<\/span> apt install<\/span> imagemagick<\/div><\/td><\/tr><\/tbody><\/table><\/div>\n

Your watermark image\/logo should be a PNG file due to the transparency support of PNG.<\/p>\n

Save the script below to watermark.sh<\/p>\n

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<\/div><\/td>
#!\/bin\/bash<\/span>
\n# Author: Christopher Hrabia - www.ceh-photo.de<\/span>
\n
\n#adjust your output folder for watermarked images<\/span>
\nOUTPUT_DIR<\/span>='.\/watermarked\/'<\/span>
\n
\n#adjust the target length in px of the larger image side, this preserves the aspect ratio<\/span>
\nMAX_WIDTH<\/span>=1600<\/span>
\nMAX_HEIGHT<\/span>=1600<\/span>
\n
\n#Determine the location of this script<\/span>
\nCURRENT_SCRIPT_DIR<\/span>=$(<\/span> cd<\/span> "$( dirname "${BASH_SOURCE[0]}" )<\/span>"<\/span> &&<\/span> pwd<\/span> )<\/span>
\n
\n#adjust for your logo, path is determined relative to the script location<\/span>
\nWATERMARK<\/span>="$CURRENT_SCRIPT_DIR<\/span>\/your_logo.png"<\/span>
\n
\n#create the output directory if it does not exist<\/span>
\nmkdir<\/span> -p<\/span> $OUTPUT_DIR<\/span>
\n
\n#iterate over all images forwarded as argument to this script<\/span>
\nfor<\/span> pic in<\/span> "$@"<\/span>; do<\/span>
\n    echo<\/span> "Processing: $pic<\/span>"<\/span>
\n    #resize the image first to simplify image positioning<\/span>
\n    convert "$pic<\/span>"<\/span> -resize<\/span> $MAX_WIDTH<\/span>"x>"<\/span> -resize<\/span> "x$MAX_HEIGHT<\/span>>"<\/span> "$OUTPUT_DIR<\/span>$pic<\/span>"<\/span>
\n    #adjust parameters here for other watermark positions<\/span>
\n    #current configuration is putting the watermark in the right bottom corner of the image<\/span>
\n    composite -dissolve<\/span> 30<\/span>%<\/span> -gravity<\/span> SouthEast -geometry<\/span> +25<\/span>+5<\/span> "$WATERMARK<\/span>"<\/span> "$OUTPUT_DIR<\/span>$pic<\/span>"<\/span> "$OUTPUT_DIR<\/span>$pic<\/span>"<\/span>
\ndone<\/span><\/div><\/td><\/tr><\/tbody><\/table><\/div>\n

Script usage:<\/p>\n

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cd<\/span> PATH\/<\/span>TO\/<\/span>YOUR\/<\/span>IMAGE_FOLDER
\n#either call the script with an absolute path or add it to your PATH<\/span>
\nwatermark.sh *<\/span>.jpg<\/div><\/td><\/tr><\/tbody><\/table><\/div>\n

The watermarked and resized pictures will be stored in the subdirectory “watermarked”.<\/p>\n","protected":false},"excerpt":{"rendered":"

As a response to a recent question I came across, I want to share a simple bash script for embedding a watermark image\/logo and resizing multiple images at the same time for online publishing. In order to use the script below you need to install imagemagick and if you are using Windows you either have […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6,46,4,45],"tags":[39,40,43],"class_list":["post-952","post","type-post","status-publish","format-standard","hentry","category-it","category-linux-it-2","category-photography","category-windows-it-2","tag-bash","tag-linux","tag-windows"],"_links":{"self":[{"href":"https:\/\/www.ceh-photo.de\/blog\/index.php?rest_route=\/wp\/v2\/posts\/952","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ceh-photo.de\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ceh-photo.de\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ceh-photo.de\/blog\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ceh-photo.de\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=952"}],"version-history":[{"count":10,"href":"https:\/\/www.ceh-photo.de\/blog\/index.php?rest_route=\/wp\/v2\/posts\/952\/revisions"}],"predecessor-version":[{"id":962,"href":"https:\/\/www.ceh-photo.de\/blog\/index.php?rest_route=\/wp\/v2\/posts\/952\/revisions\/962"}],"wp:attachment":[{"href":"https:\/\/www.ceh-photo.de\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=952"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ceh-photo.de\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=952"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ceh-photo.de\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=952"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}