Command line tool for image conversion
Solution 1
ImageMagick can do format conversions with a tool that comes with it called convert
. You can find binaries for it here.
You'll want to run something like this on Windows:
for %%f in (*.jpg) do (
convert "%%~nf.jpg" -type truecolor "%%~nf.bmp"
)
Or in Bash:
for f in *.jpg; do convert "$f" -type truecolor "${f%.*}.bmp"; done
Convert picks the format automatically from the extension and -type truecolor
makes sure you are converting to 24-bit.
Solution 2
Try Convert. It can do a lot.
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Void Star
Hi, my name is Kyle. I have been interested in science, math, and engineering for (quite literally) as long as I can remember. I am an avid programmer and electronics hobbyist. I attended the University of Washington as an undergraduate in the Electrical Engineering department and now work for Keysight Technologies as a research and development software engineer.
Updated on September 18, 2022Comments
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Void Star over 1 year
Possible Duplicate:
Free command line image converterI need a command line tool for windows which can be used to convert an image from any common format to 24 bit bitmap. I'm writing some programs to do image manipulation in C, but I don't really want to write a ton of code to read images in multitudes of formats. I use bitmap format a lot for both reading and writing because it's pretty straight forward. I don't really want to convert all of the images by opening in paint and saving in the desired format.
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Void Star over 11 yearsYeah, that's what I'm looking for. 8 minutes before I can accept answer.
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Void Star over 11 yearszmode gave more specific details, so I'm accepting his answer. Thanks!
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UtahJarhead over 11 yearsWhat shell is your syntax for?
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UtahJarhead over 11 yearsIt doesn't look like bash, so here's the above in bash:
for f in *.jpg; do convert "$f" -type truecolor "${f%.*}.bmp"; done
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sean christe over 11 yearsThe posted code is MS batch.
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user2284570 over 9 years@zmode : How I can do if I have color images and black and white images in the same directory (scanned documents)? Since this is for sending in a mail' I fear getting larger images for black and white ones (1 bit for color) by adding colorfull informations (eg : switching from 1 bit to three bytes RGB per pixel). So, is it possible to to convert the format without converting color images to black and white or vice versa?
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user2284570 over 9 years@galuano1 : Your link is dead.
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galuano1 over 9 years@user2284570 Updated the link.
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Marnes over 4 yearsJust to amend, the docs clarify that it will pick the format from binary signatures first (as it should), and then the extension.
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user3405291 over 3 yearsWhile installing ImageMagick, I marked the checkbox
Install legacy tools like convert
. Also, I had to use the complete path for convert to make it work:"C:\Program Files\ImageMagick-7.0.10-Q16-HDRI\convert.exe"