![]() ![]() ![]() You can do this in your shell/perl script. If for some reason you still need to know the longer side, I usually use the identity function to retrieve image information first. Its a completely abstract value that gets practical value only in the context of knowing also the absolute size of the printout or rendering on screen or monitor: You can print the very same 72x72 pixels image on a 1 inch wide square: the printout will have a resolution of 72dpi. If, for example, you wanted each image to have a maximal width of 800, then you can just make the height portion of the scale option an unreasonable high number for you images.Īs you can see, by setting the height to a number larger than a feasible proportional height, you get all images sized to 200 pixels in width regardless of orientation. If this is what you are looking for, then you don't need to know which size is longer. size of 3 MB without losing a lot of quality. This made me able to upload a scanned document of 11 MB with a max. Note that if you use an option such as resize 800x800, it will resize images as follows: I recommend you shrinkpdf.sh script, you can customize the code to use the ppi value you want (72 by default) and reach exactly the filesize you need to sacrifice the least quality. ![]() Provide the desired sizes and I'll paste an example in here. Give me an example of two different images in a folder, including width and height. maxdepth 0 -iname "*.jpg" -print0 | xargs -0 mogrify -path /tmp/thumbs -thumbnail 120x120 -quality 75 -format png Upgrade if you need to use a different directory as well as a different image format for your output.įind. *Before IM v6.3.4-3 the "-format" and "-path" settings were mutually exclusive. ![]() The above statement will leave the original JPG files alone, and write PNGs beside them. maxdepth 0 -iname "*.jpg" -print0 | xargs -0 mogrify -format png maxdepth 0 -iname "*.jpg" -print0 | xargs -0 mogrify -resize 800圆00 -quality 75įind. NOTE! Mogrify is a dangerous command because it operates on the original files! Test your commands on COPIES of your files.įind. maxdepth 0 -iname "*.jpg" -print0 | xargs -0 -I -l is deprecated in preference for -L 1.įind. It can read and write images in a variety of formats (over 200) including PNG, JPEG, JPEG-2000, GIF, TIFF, DPX, EXR, WebP, Postscript, PDF, and SVG.Use -maxdepth 0 to avoid descending into subdirectories.Use -print0 (and -0) to avoid problems with filenames containing Carriage Returns. ![]()
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