Imagemagick has a batch mode called "mogrify" so you can just use something like this from the command line: mogrify -format jpg -resize 3000 -define jpeg:extent=1000kb *.jpg That will resize all jpegs in the directory to 3000px (height or width, whichever is larger) and it will try to get close to 1000kb for the file size. For your use case you could also do: mogrify -format jpg -resize 750 -quality 80 *.jpg Hope it helps! Note also that nautilus has the ability to be scripted with these commands to execute on what you have selected. I believe there is also already a script written for this to: Install rotate and resize right-click functions: sudo apt-get install nautilus-image-converter restart of nautilus required -C On Sun, 11 Oct 2020, 06:41 Shlomi Fish, <shlomif@xxxxxxxxxxxxxx> wrote: > Hi jcupitt ! > > On Sat, 10 Oct 2020 17:05:18 +0100 > jcupitt--- via gimp-developer-list <gimp-developer-list@xxxxxxxxx> wrote: > > > If you're comfortable at the command-line, imagemagick is very simple > > and runs everywhere: > > > > https://imagemagick.org > > > > With bash you can enter: > > > > for i in *.jpg; do > > convert $i --resize x768 resized_version_$i > > done > > It is a good idea to wrap the $i in double quotes in bash and similar > shells to > prevent word splitting: > > * https://shlomif-tech.livejournal.com/14671.html > > * https://perl-begin.org/topics/security/code-markup-injection/ > > > > > My image processing package nip2 can batch-process in a GUI way, > > though it's a bizarre program. > > > > https://github.com/libvips/nip2 > > > > Heh, it is nice that you admit that you think it is "bizarre". It shows > maturity to admit that one's software application is not perfect. > > > 1. Start nip2 > > 2. Click "File / Open", navigate to the source directory, click on the > > first image, shift-click on the last, click Open > > 3. This will make a group of images, probably called A1. "Click > > Toolkits / Image / Transform / Resize / Size to" to resize the group > > 4. Select Vertical, 768, Lanczos3 in the scrap of GUI you see > > 5. RIght-click on the name of the resize object (probably A2) and > > select "Save as" > > 6. In the dialog, navigate to a destination directory, enter eg. > > "fred00.jpg" as the filename, and click Save > > 7. The set of images will be saved as fred00.jpg, fred01.jpg, fred02.jpg > etc. > > > > John > > > > > > On Fri, 9 Oct 2020 at 11:26, Drake Koefoed via gimp-developer-list > > <gimp-developer-list@xxxxxxxxx> wrote: > > > > > > I would like to batch process a directory of images to h=768 retain > aspect > > > ratio. > > > > > > I have not seen a simple way to do this. Something like the wonderful > > > batch rename in Nautilus would be great if it exists or could be > written. > > > drakekoefoed@xxxxxxxxxxxxx > > > _______________________________________________ > > > gimp-developer-list mailing list > > > List address: gimp-developer-list@xxxxxxxxx > > > List membership: > https://mail.gnome.org/mailman/listinfo/gimp-developer-list > > > List archives: https://mail.gnome.org/archives/gimp-developer-list > > _______________________________________________ > > gimp-developer-list mailing list > > List address: gimp-developer-list@xxxxxxxxx > > List membership: > https://mail.gnome.org/mailman/listinfo/gimp-developer-list > > List archives: https://mail.gnome.org/archives/gimp-developer-list > > > > -- > > Shlomi Fish https://www.shlomifish.org/ > https://youtu.be/n6KAGqjdmsk - “Hurt Me Tomorrow” > > I also have versions of this code in COBOL.NET, Intercal, PDP‐10 > Assembly, J, > APL, Windows NT 4.0 Batch script and Autocad Lisp — I’m sure you can handle > all of them because none of them is Perl. ;-). > > Please reply to list if it's a mailing list post - https://shlom.in/reply > . > _______________________________________________ > gimp-developer-list mailing list > List address: gimp-developer-list@xxxxxxxxx > List membership: > https://mail.gnome.org/mailman/listinfo/gimp-developer-list > List archives: https://mail.gnome.org/archives/gimp-developer-list > _______________________________________________ gimp-developer-list mailing list List address: gimp-developer-list@xxxxxxxxx List membership: https://mail.gnome.org/mailman/listinfo/gimp-developer-list List archives: https://mail.gnome.org/archives/gimp-developer-list
