Bsrgvty

Which program has a function to sort images by their pixel size / resolution / dimensions.

Very strange but even so powerful DigiKam doesn't have so simple function.

Any suggestions?

I've no idea how this performs but ImageMagick has an identify application that I've got to learn over the last ten minutes. Better than anything, it has a -format argument where you can do maths!

find -iname '*.jpg' -exec identify -format "%[fx:w*h] %in" + | sort -g

Unfortunately, if you get above a certain size, you get scientific notation (eg 1.2*10^3) instead of an integer back from identify. Thankfully sort has a -g argument that will parse them out.

On the same files here, this version (not forking out to Perl) only take 60% of the time the Perl version does. That's not to say Perl is slow, but going into perl and subshelling back out is an unnecessary complication that's slowing things down (I think).

Mine still isn't ideal. Needing to parse numbers back to integers for sorting is fairly slow. Ideally you'd do this all internally in one language where the size remains as an integer throughout... But the above is the shortest, sharpest one-liner I can do.

If you're looking for a command-line tool, the following command will sort image files where the highest resolution comes first:

find . -iname "*.png" -o -iname "*.jpg" | perl -e '$f=subeval(`identify -format %w*%h $quotemeta(shift) 2>/dev/null`);print sort$f->($b)<=>$f->($a)<>'

I'm basically sorting the files using perl sort sub-subroutine where the key here is to call the identify command and eval its formatted output.

identify is available with the imagemagick package:

sudo apt-get install imagemagick

UPDATE:

The following command will also output the resolution:

find . -iname "*.png" -o -iname "*.jpg" | perl -e '$f=sub`identify -format %w*%h $quotemeta(shift) 2>/dev/null`;chomp&&print "$_t".$f->($_) for sorteval($f->($b))<=>eval($f->($a))<>'

Example:

./foo bar.png 1600*900
./baz.png 1600*900
./img_0004.jpg 1280*720
./img_0006.jpg 1280*720
./img_0001.jpg 1280*720
./img_0003.jpg 1280*720
./img_0002.jpg 1280*720
./img_0005.jpg 1280*720
./launcher.png 385*632
./textfield.png 402*329
./foo2.png 202*229

Using find, file --mime-type, identify, awk and sort

Using file --mime-type we find all images, even without an extension.

The one-line at the end of this answer has a problem with newlines in the file name. Therefore here an other version:

find . -type f -exec sh -c 'file --brief --mime-type "$0" |
grep -q ^image/ && identify -format "%[fx:w*h] %in" "$0"' ; |
sort -g

Sample output

26696 ./OWoHp.png
37975 ./hUXnc.png
47275 ./foo
bar.png

This is the file with the newline in the filename:

47275 ./foo
bar.png

Many thanks @terdon, @don_crissti and @glennjackman for the answers here.

Old version with a problem if the filename contains newlines

find . -type f -print0 | 
 xargs -0 -I file --mime-type | 
 awk -F$"" -F": " '/image/ print $1' | 
 xargs -I identify -format "%[fx:w*h] %in" | 
 sort -g

Sample output

9216 ./.face
27918 ./Unbenannt.png
1.0368e+06 ./Images/Wallpapers/14-13.jpg
1.57292e+07 ./Images/Wallpapers/wallpaper_19.jpg
1.57292e+07 ./Images/Wallpapers/wallpaper_22.jpg
1.92e+06 ./Images/Wallpapers/black (10).jpg
2.304e+06 ./Images/Wallpapers/1920x1200.jpg
2.304e+06 ./Images/Wallpapers/1920x1200_Seria_Lunar-Melodies.png
2.304e+06 ./Images/Wallpapers/Anime_girl_129177.jpg
2.304e+06 ./Images/Wallpapers/wallpaper-1802661.jpg
2.304e+06 ./Images/Wallpapers/wallpaper-264390.jpg
3.14368e+06 ./Images/Wallpapers/14 - 2.jpg
3.6864e+06 ./Images/Wallpapers/14-1.jpg
4.096e+06 ./Images/Wallpapers/wallpaper-2850337.jpg
4.096e+06 ./Images/Wallpapers/wt4NRqA.jpg
7.0969e+06 ./Images/Wallpapers/14 - 1.png

Late to the party but here's my version with find,exiftool,and sort:

find . -exec exiftool -S -t -q -FileName -ImageSize + | sort -k2n,2

It's a bit slow, but works. Sample output:

$ find Downloads -exec exiftool -S -t -q -FileName -ImageSize + | sort -k2n,2 

1433695350670.jpg 1600x1000
1433695350670.jpg 1600x1000
1434999385912.jpg 2212x3318
1434999385912.jpg 2212x3318
1433524966694.jpg 2688x1520
1433524966694.jpg 2688x1520
1433525301504.jpg 2688x1520
1433525301504.jpg 2688x1520

Geeqie can sort by image size.

sudo apt install geeqie

Oli's answer works. Here is a modification to list minimum of width and height

find * -type f -exec identify -format "%[fx:w>h?h:w] %in" + | sort -g