Under “Batch Conversion Settings”, click on the “Options” button in order to set the quality of the resized images. Under “Output directory for result files”, click on the “Browse” button and choose a folder in which to save the resized thumbails. Using this screen, you will select the location in which to save the thumbnails, input the maximum size of each thumbnail, and enter the quality of the resulting images. Once your images are selected, start the batch configuration dialog by clicking File → Start batch dialog with selected files.Īt this point, you should see the Batch Conversion dialog window. Once you see previews of your images in the right-hand pane, select them all by holding CTRL and pressing A. Start up “IrfanView Thumbails”, and browse to the folder that contains the images you wish to resize. This version of the script takes a glob pattern instead of a filename and will apply the Unsharp Mask filter to all files matching this pattern.īatch Resize Images with IrfanView ( source) (image (car (gimp-file-load RUN-NONINTERACTIVE (let* ((filelist (cadr (file-glob pattern 1)))) In order to use it, we will need to do some modifications to our script: (define (batch-unsharp-mask pattern This turns GIMP into a versatile batch processor. GIMP 2.2 added a very useful function for this purpose, the file-glob plug-in. You might want to apply an effect to a number of files, typically to a set of files in the same directory. (gimp-file-save RUN-NONINTERACTIVE image drawable filename filename) (drawable (car (gimp-image-get-active-layer image)))) (let* ((image (car (gimp-file-load RUN-NONINTERACTIVE filename filename))) It opens the respective file, applies the Unsharp Mask filter and saves the image again: (define (simple-unsharp-mask filename Here's an example of a script that takes a filename and some numeric parameters. Will tell GIMP to start in batch mode and accept commands on the command-line. It also makes it easy to apply the same set of operations to a number of images. GIMP comes with a so-called batch mode that allows you to do image processing from the command line. As Joonas mentions in his comment, Gimp and Irfanview have both batch processing tools.
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