Save as on multiple files at once (GIMP)

Question

I have a series of .xcf images which I want to save as .png. I can open each file and save as .png but since there are a lot of images it would take a fair amount of time.

Is there a way to convert all images at once, or another way I have to spent less time on this job?

Thank you in advance.

Answer 1

Well if you have imagemagick installed, you can do it like:

mogrify -format png *.xcf

This converts them automatically in the same directory. Also read man mogrify or this for other options.

Answer 2

I'd use the Python console inside GIMP for that - if you happen to be in Windows, take a look on how to install the Python extension for GIMP 2.6 (on Linux it either comes isntalled or is a matter of installing the gimp-python package, probably the same on Mac OS)

From within GIMP's Python console you have access to a huge GIMP API you can check by looking at the help->Procedure Browser dialog - besides having all the other features of Python, including file and strign manipulation.

One you are =in the Python-fu console, it is matter of doing something like this:

import glob
for fname in glob.glob("*.xcf"):
    img = pdb.gimp_file_load(fname, fname)
    img.flatten()
    new_name = fname[:-4] + ".png"
    pdb.gimp_file_save(img, img.layers[0], new_name, new_name)

(this will work on the directory GIMP uses as default - concatenate the desried directory to the filepaths to work on other dirs).

If you need to that more than once, take a look on the example plugins that come with gimp-Python, and paste the code above as the core fo a python plug-in for GIMP for your own use.

Answer 3

You can quickly create a plugin called SaveAll. Save this code to some file with .scm extension (e.g. saveall.scm):

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; 
; This program is free software; you can redistribute it and/or modify 
; it under the terms of the GNU General Public License as published by 
; the Free Software Foundation; either version 2 of the License, or 
; (at your option) any later version. 
; 
; This program is distributed in the hope that it will be useful, 
; but WITHOUT ANY WARRANTY; without even the implied warranty of 
; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the 
; GNU General Public License for more details. 

(define (script-fu-save-all-images) 
  (let* ((i (car (gimp-image-list))) 
         (image)) 
    (while (> i 0) 
      (set! image (vector-ref (cadr (gimp-image-list)) (- i 1))) 
      (gimp-file-save RUN-NONINTERACTIVE 
                      image 
                      (car (gimp-image-get-active-layer image)) 
                      (car (gimp-image-get-filename image)) 
                      (car (gimp-image-get-filename image))) 
      (gimp-image-clean-all image) 
      (set! i (- i 1))))) 

(script-fu-register "script-fu-save-all-images" 
 "<Image>/File/Save ALL" 
 "Save all opened images" 
 "Saul Goode" 
 "Saul Goode" 
 "11/21/2006" 
 "" 
 ) 

Put the file into plugins folder with same extension (on Windows it's C:\Program Files\GIMP 2\share\gimp\2.0\scripts).

Then you don't even have to restart the app. Filters menu -> Script-Fu -> Update scripts. You'll have Save ALL item in the File menu (at the very bottom). It works quick an easy for me.

This script come from here.

There's also another script, but I haven't tested it myself.

Answer 4

This script works perfectly in gimp 2.8 Windows 7.

UCHLIN WILKINSON SAVE ALL OPEN IMAGES FROM GIMP.

Handy if you are scanning in a lot of images and you just want to export them all in one go. It is based on a script by Saul Goode, extended to prompt for image base name, directory etc.

Save it as saveall.scm in your Gimp scripts directory. E.g. ~/.gimp-2.8/scripts/

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
; This program is free software; you 
; can redistribute it and/or modify 
; it under the terms of the GNU 
; General Public License as published 
; by the Free Software Foundation; 
; either version 2 of the License, or 
; (at your option) any later version. 
; 
; This program is distributed in the
; hope that it will be useful, 
; but WITHOUT ANY WARRANTY;
; without even the implied warranty of 
; MERCHANTABILITY or FITNESS 
; FOR A PARTICULAR PURPOSE.  
; See the GNU General Public License
;  for more details. 

(define (script-fu-save-all-images inDir inSaveType 
inFileName inFileNumber) 
  (let* (
          (i (car (gimp-image-list)))
          (ii (car (gimp-image-list))) 
          (image)
          (newFileName "")
          (saveString "")
          (pathchar (if (equal? 
                 (substring gimp-dir 0 1) "/") "/" "\\"))
        )
    (set! saveString
      (cond 
        (( equal? inSaveType 0 ) ".jpg" )
        (( equal? inSaveType 1 ) ".bmp" )
        (( equal? inSaveType 2 ) ".png" )
        (( equal? inSaveType 3 ) ".tif" )
      )
    ) 
    (while (> i 0) 
      (set! image (vector-ref (cadr (gimp-image-list)) (- i 1)))
      (set! newFileName (string-append inDir 
              pathchar inFileName 
              (substring "00000" (string-length 
              (number->string (+ inFileNumber i))))
              (number->string (+ inFileNumber i)) saveString))
      (gimp-file-save RUN-NONINTERACTIVE 
                      image
                      (car (gimp-image-get-active-layer image))
                      newFileName
                      newFileName
      ) 
      (gimp-image-clean-all image) 
      (set! i (- i 1))
    )
  )
) 

(script-fu-register "script-fu-save-all-images" 
 "<Image>/File/Save ALL As" 
 "Save all opened images as ..." 
 "Lauchlin Wilkinson (& Saul Goode)" 
 "Lauchlin Wilkinson (& Saul Goode)" 
 "2014/04/21" 
 ""
 SF-DIRNAME    "Save Directory" ""
 SF-OPTION     "Save File Type" (list "jpg" "bmp" "png" "tif")
 SF-STRING     "Save File Base Name" "IMAGE"
 SF-ADJUSTMENT "Save File Start Number" 
      (list 0 0 9000 1 100 0 SF-SPINNER)
 )

Answer 5

{
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
; This program is free software; you 
; can redistribute it and/or modify 
; it under the terms of the GNU 
; General Public License as published 
; by the Free Software Foundation; 
; either version 2 of the License, or 
; (at your option) any later version. 
; 
; This program is distributed in the
; hope that it will be useful, 
; but WITHOUT ANY WARRANTY;
; without even the implied warranty of 
; MERCHANTABILITY or FITNESS 
; FOR A PARTICULAR PURPOSE.  
; See the GNU General Public License
;  for more details. 

(define (script-fu-save-all-images inDir inSaveType 
inFileName inFileNumber) 
  (let* (
          (i (car (gimp-image-list)))
          (ii (car (gimp-image-list))) 
          (image)
          (newFileName "")
          (saveString "")
          (pathchar (if (equal? 
                 (substring gimp-dir 0 1) "/") "/" "\\"))
        )
    (set! saveString
      (cond 
        (( equal? inSaveType 0 ) ".jpg" )
        (( equal? inSaveType 1 ) ".bmp" )
        (( equal? inSaveType 2 ) ".png" )
        (( equal? inSaveType 3 ) ".tif" )
      )
    ) 
    (while (> i 0) 
      (set! image (vector-ref (cadr (gimp-image-list)) (- i 1)))
      (set! newFileName (string-append inDir 
              pathchar inFileName 
              (substring "00000" (string-length 
              (number->string (+ inFileNumber i))))
              (number->string (+ inFileNumber i)) saveString))
      (gimp-file-save RUN-NONINTERACTIVE 
                      image
                      (car (gimp-image-get-active-layer image))
                      newFileName
                      newFileName
      ) 
      (gimp-image-clean-all image) 
      (set! i (- i 1))
    )
  )
) 

(script-fu-register "script-fu-save-all-images" 
 "<Image>/File/Save ALL As" 
 "Save all opened images as ..." 
 "Lauchlin Wilkinson (& Saul Goode)" 
 "Lauchlin Wilkinson (& Saul Goode)" 
 "2014/04/21" 
 ""
 SF-DIRNAME    "Save Directory" ""
 SF-OPTION     "Save File Type" (list "jpg" "bmp" "png" "tif")
 SF-STRING     "Save File Base Name" "IMAGE"
 SF-ADJUSTMENT "Save File Start Number" 
      (list 0 0 9000 1 100 0 SF-SPINNER)
 )

}

Answer 6

Yes, there is a way and it requires no programming skills. Just install the free Batch Image Manipulation Plugin [archive]. The project is open source and it is available on GitHub here.