Commands tagged png sorted by votes

Commands tagged png (12)

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Maximum PNG compression with optipng, advpng, and advdef

optipng and advancecomp (for the the advpng and advdef tools) are the best FOSS tools for losslessly compressing PNGs. With the above tool chain, you can cut off as much as 20% off a PNG's file size.
This is sample output - yours may be different.
4

optipng -o3 *png && advpng -z -4 *png && advdef -z -4 *png

tamasrepus · 2010-05-22 23:30:21 5
Batch Convert SVG to PNG (in parallel)

Convert some SVG files into PNG using ImageMagick's convert command. Run the conversions in parallel to save time. This is safer than robinro's forkbomb approach :-) xargs runs four processes at a time -P4
This is sample output - yours may be different.
4

find . -name \*.svg -print0 | xargs -0 -n1 -P4 -I{} bash -c 'X={}; convert "$X" "${X%.svg}.png"'

flatcap · 2014-04-11 14:30:30 13
Convert a single-page PDF to a hi-res PNG, at 300dpi

If you skip this part: -density 300x300 you'll get a very lo-res image.
This is sample output - yours may be different.
2

convert -density 300x300 input.pdf output.png

billmakesbooks · 2011-01-28 00:36:31 6
Trim png files in a folder

That should be a short as it can get.
This is sample output - yours may be different.
1

mogrify -trim *png

houghi · 2010-10-21 15:09:33 7
Batch Convert SVG to PNG

Convert some SVG files into PNG using ImageMagick's convert command.
This is sample output - yours may be different.
1

for i in *.svg; do convert "$i" "${i%.svg}.png"; done

flatcap · 2014-03-24 14:02:02 10
Batch Convert SVG to PNG (in parallel)

Use GNU Parallel: short, easy to read, and will run one job per core.
This is sample output - yours may be different.
1

parallel convert {} {.}.png ::: *.svg

unixmonkey74668 · 2014-04-12 06:39:02 8
find and reduce 8x parallel the size of PNG images without loosing quality via optipng
This is sample output - yours may be different.
1

find /var/www/ -type f -name '*.[pP][nN][gG]' -print0 | xargs -L 1 -n 1 -P 8 -0 optipng -preserve -quiet -o7 -f4 -strip all

emphazer · 2018-05-14 16:38:11 228
Check a directory of PNG files for errors

Useful for checking if a large number of PNG files was downloaded successfully by verifying the built-in CRC checksum. For incomplete files, the command will print: "00002309.png EOF while reading IDAT data ERROR: 00002309.png" The process is very fast; checking 21,000 files of 5MB in size took only five minutes on a 2011 Intel mobile dual-core.
This is sample output - yours may be different.
1

ls *.png |parallel --nice 19 --bar --will-cite "pngcheck -q {}"

Negate · 2021-09-05 00:37:07 362
Trim png files in a folder
This is sample output - yours may be different.
0

for file in `ls *.png`; do convert -trim $file $file; done

adrienhaxaire · 2010-10-21 13:20:30 7
Trim png files in a folder
This is sample output - yours may be different.
0

for file in *.png; do mogrify -trim "$file"; done

depesz · 2010-10-21 13:58:05 5
Batch Convert SVG to PNG

convert all *.svg to png _in parallel_ this speeds up the conversion for many files, but might also not be feasible for a large number of files
This is sample output - yours may be different.
0

for i in *.svg; do convert "$i" "${i%.svg}.png" & done

robinro · 2014-03-26 15:03:54 8
Batch Convert SVG to PNG
This is sample output - yours may be different.
-1

for i in *; do inkscape $i --export-png=`echo $i | sed -e 's/svg$/png/'`; done

o0110o · 2014-03-24 12:15:58 10

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Find usb device in realtime

Using this command you can track a moment when usb device was attached.

Edit a file on a remote host using vim

Save your open windows to a file so they can be opened after you restart

This will save your open windows to a file (~/.windows). To start those applications: $ cat ~/.windows | while read line; do $line &; done Should work on any EWMH/NetWM compatible X Window Manager. If you use DWM or another Window Manager not using EWMH or NetWM try this: $ xwininfo -root -children | grep '^ ' | grep -v children | grep -v '' | sed -n 's/^ *$0x[0-9a-f]*$ .*/\1/p' | uniq | while read line; do xprop -id $line _NET_WM_PID | sed -n 's/.* = $[0-9]*$$/\1/p'; done | uniq -u | grep -v '^$' | while read line; do ps -o cmd= $line; done > ~/.windows

Escape forward slashes in a variable

For example $ path="/etc/apt/sources.list"; echo ${path//'/'/'\/'} will print $ \/etc\/apt\/sources.list

zgrep across multiple files

list block devices

Shows all block devices in a tree with descruptions of what they are.

Separates each frame of a animated gif file to a counted file, then appends the frames together into one sheet file. Useful for making sprite sheets for games.

requires imagemagick

See n most used commands in your bash history

Redirect tar extract to another directory

The command extracting the tar contents into particular directory ...

Have subversion ignore a file pattern in a directory

If you don't want to commit files to subversion, and don't want those file to show up when doing an "svn stat", this command is what you need

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Commands tagged png (12)

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