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How to convert CR2 to JPG or PNG?

ufraw fatal internal error on ubuntu 16.04Batch convert multiple screenshots in PNG to JPGTool to add shapes, annotations and text using templates to imagesHow can I convert a folder of .pngs to .jpgs while setting the background color?How to converting HEX jpg to BIN jpgBatch converting swf to pngHow to convert a PNG strip to a GIF?Convert folder with tiff to jpg by using mozjpgHow to convert .jpg or .png image to .rawLibreOffice Draw multiple jpg to pdfCR2 Photos compressing from Windows 7 to UbuntuRemoving the alpha channel from all the jpg images in a folder

26

8

I need to convert a lot of CR2 photos to either JPG or PNG, no editing. How to do this?

image-processing

share|improve this question

edited Jun 14 '14 at 23:25

Braiam

52.3k20137222

asked Jun 14 '14 at 21:12

user284848user284848

138135

add a comment | 

26

8

I need to convert a lot of CR2 photos to either JPG or PNG, no editing. How to do this?

image-processing

share|improve this question

edited Jun 14 '14 at 23:25

Braiam

52.3k20137222

asked Jun 14 '14 at 21:12

user284848user284848

138135

add a comment | 

I need to convert a lot of CR2 photos to either JPG or PNG, no editing. How to do this?

image-processing

share|improve this question

edited Jun 14 '14 at 23:25

Braiam

52.3k20137222

asked Jun 14 '14 at 21:12

user284848user284848

138135

share|improve this question

edited Jun 14 '14 at 23:25

Braiam

52.3k20137222

asked Jun 14 '14 at 21:12

user284848user284848

138135

share|improve this question

edited Jun 14 '14 at 23:25

Braiam

52.3k20137222

asked Jun 14 '14 at 21:12

user284848user284848

138135

edited Jun 14 '14 at 23:25

Braiam

52.3k20137222

edited Jun 14 '14 at 23:25

Braiam

52.3k20137222

asked Jun 14 '14 at 21:12

user284848user284848

138135

asked Jun 14 '14 at 21:12

user284848user284848

138135

7 Answers
7

active

oldest

votes

13

Ufraw

you can convert .cr2 to .jpeg by ufraw.

sudo apt-get install ufraw

Right click on the file and select open with ufraw.

** You can also import them to Gimp with gimp-ufraw and then export as .png or .jpeg.

sudo apt-get install gimp-ufraw

share|improve this answer

answered Jun 14 '14 at 21:19

user224082

add a comment | 

42

I'll go a different route... Use ufraw-batch not ufraw.

sudo apt-get install ufraw-batch



## This will output (not replace) the file with a new extension.

## foo.CR2 exported to foo.png

ufraw-batch --out-type png *.CR2

See ufraw-batch --help and man ufraw-batch for more info.

share|improve this answer

answered Apr 5 '15 at 21:49

Evan CarrollEvan Carroll

4,814113567

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  ufraw-batch is awesome!
  
  – jemiloii
  Sep 13 '16 at 20:00
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  ufraw-batch --out-type png $(ls IMG_93{44..99}* 2>| cat)
  
  – smac89
  Feb 19 '18 at 0:07
  

  
  
  
  


• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  In some cases, ufraw-batch leads to a segmentation fault. It will successfully develop one RAW file, and then it stops. See bugs.launchpad.net/ubuntu/+source/ufraw/+bug/1768855 for further information.
  
  – user258532
  Sep 14 '18 at 12:13
  

  
  
  
  

add a comment | 

3

For another alternative, use mogrify:

mogrify -format png *.cr2

share|improve this answer

edited 4 mins ago

Pablo Bianchi

2,88521534

answered Sep 27 '17 at 22:35

qreba47jhqb4e3lstrujvvdxqreba47jhqb4e3lstrujvvdx

96110

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  it should be stated that mogrify is part of imagemagick, which is available at imagemagick.org. however, mogrify uses ufraw-batch in the background, so might as well use that directly
  
  – dominik andreas
  Apr 22 '18 at 9:29
  

  
  
  
  


• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  +1 as mogrify circumvents the bug in ufraw-batch that leads to a segmentation fault (asper Sptember 2018)
  
  – Bruni
  Sep 23 '18 at 12:30
  

  
  
  
  

add a comment | 

1

Try nconvert

As command line tool
OR
xnconvert as GUI tool

share|improve this answer

answered Jun 14 '14 at 22:08

YanesYanes

291

• 
  
  
  

  
  5
  

  
  
  
  
  
  

  
  
  Please explain how to use xnconvert.
  
  – NGRhodes
  Jun 14 '14 at 22:10
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  This is now a Famous Question. We do not like these sort of answers. This should be deleted.
  
  – ubashu
  Aug 2 '16 at 3:15
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  ./nconvert -out jpeg -truecolors /path/to/images/folder/*.CR2
  
  – Sagar Nikam
  Jan 15 at 10:47
  

  
  
  
  

add a comment | 

1

You could also program a simple loop in the console.

For example (using the fish console), and assuming the active directory only has RAW files.

set files (ls)

for i in $files

    dcraw $i

end

or

set files (ls)

for i in $files

    ufraw-batch --out-type=tif --out-depth $i

end

I use ufraw-batch that way because it often leads to an error, see https://bugs.launchpad.net/ubuntu/+source/ufraw/+bug/1768855 .

share|improve this answer

answered Sep 14 '18 at 12:17

user258532user258532

660919

add a comment | 

1

The method that really worked for me:

You need dcraw and ppmtojpeg (install with apt)

for i in *.CR2; do dcraw -c $i | ppmtojpeg > $1.jpg; echo $i done; done

What it does: First convert CR2 to PPM with dcraw passing the output to ppmtojpeg which converts to JPG.

I found this here

share|improve this answer

answered Feb 16 at 19:56

PeterPeter

111

add a comment | 

0

Use:

exiftool -Composite:PreviewImage -b photo.CR2 > photo.jpg

Longer answer:

ufraw-batch conversion quality is very bad. Imagemagick uses ufraw under the hoods (unfortunately). dcraw is better, but still not great. The best solution I found out was to use exif to extract PreviewImage metadata. I believe that's generated by the camera itself.

Ref: https://www.imagemagick.org/discourse-server/viewtopic.php?f=3&t=6936&sid=9548c421f1bd69f192e632d06ca03dff&start=30#p130949

share|improve this answer

answered Jan 6 at 19:51

Rafael XavierRafael Xavier

456149

add a comment | 

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sudo apt-get install ufraw

sudo apt-get install gimp-ufraw

sudo apt-get install ufraw

sudo apt-get install gimp-ufraw

sudo apt-get install ufraw

sudo apt-get install gimp-ufraw

sudo apt-get install ufraw

sudo apt-get install gimp-ufraw

42

I'll go a different route... Use ufraw-batch not ufraw.

sudo apt-get install ufraw-batch



## This will output (not replace) the file with a new extension.

## foo.CR2 exported to foo.png

ufraw-batch --out-type png *.CR2

See ufraw-batch --help and man ufraw-batch for more info.

share|improve this answer

answered Apr 5 '15 at 21:49

Evan CarrollEvan Carroll

4,814113567

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  ufraw-batch is awesome!
  
  – jemiloii
  Sep 13 '16 at 20:00
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  ufraw-batch --out-type png $(ls IMG_93{44..99}* 2>| cat)
  
  – smac89
  Feb 19 '18 at 0:07
  

  
  
  
  


• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  In some cases, ufraw-batch leads to a segmentation fault. It will successfully develop one RAW file, and then it stops. See bugs.launchpad.net/ubuntu/+source/ufraw/+bug/1768855 for further information.
  
  – user258532
  Sep 14 '18 at 12:13
  

  
  
  
  

add a comment | 

42

I'll go a different route... Use ufraw-batch not ufraw.

sudo apt-get install ufraw-batch



## This will output (not replace) the file with a new extension.

## foo.CR2 exported to foo.png

ufraw-batch --out-type png *.CR2

See ufraw-batch --help and man ufraw-batch for more info.

share|improve this answer

answered Apr 5 '15 at 21:49

Evan CarrollEvan Carroll

4,814113567

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  ufraw-batch is awesome!
  
  – jemiloii
  Sep 13 '16 at 20:00
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  ufraw-batch --out-type png $(ls IMG_93{44..99}* 2>| cat)
  
  – smac89
  Feb 19 '18 at 0:07
  

  
  
  
  


• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  In some cases, ufraw-batch leads to a segmentation fault. It will successfully develop one RAW file, and then it stops. See bugs.launchpad.net/ubuntu/+source/ufraw/+bug/1768855 for further information.
  
  – user258532
  Sep 14 '18 at 12:13
  

  
  
  
  

add a comment | 

I'll go a different route... Use ufraw-batch not ufraw.

sudo apt-get install ufraw-batch



## This will output (not replace) the file with a new extension.

## foo.CR2 exported to foo.png

ufraw-batch --out-type png *.CR2

See ufraw-batch --help and man ufraw-batch for more info.

share|improve this answer

answered Apr 5 '15 at 21:49

Evan CarrollEvan Carroll

4,814113567

sudo apt-get install ufraw-batch



## This will output (not replace) the file with a new extension.

## foo.CR2 exported to foo.png

ufraw-batch --out-type png *.CR2

share|improve this answer

answered Apr 5 '15 at 21:49

Evan CarrollEvan Carroll

4,814113567

answered Apr 5 '15 at 21:49

Evan CarrollEvan Carroll

4,814113567

answered Apr 5 '15 at 21:49

Evan CarrollEvan Carroll

4,814113567

3

For another alternative, use mogrify:

mogrify -format png *.cr2

share|improve this answer

edited 4 mins ago

Pablo Bianchi

2,88521534

answered Sep 27 '17 at 22:35

qreba47jhqb4e3lstrujvvdxqreba47jhqb4e3lstrujvvdx

96110

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  it should be stated that mogrify is part of imagemagick, which is available at imagemagick.org. however, mogrify uses ufraw-batch in the background, so might as well use that directly
  
  – dominik andreas
  Apr 22 '18 at 9:29
  

  
  
  
  


• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  +1 as mogrify circumvents the bug in ufraw-batch that leads to a segmentation fault (asper Sptember 2018)
  
  – Bruni
  Sep 23 '18 at 12:30
  

  
  
  
  

add a comment | 

3

For another alternative, use mogrify:

mogrify -format png *.cr2

share|improve this answer

edited 4 mins ago

Pablo Bianchi

2,88521534

answered Sep 27 '17 at 22:35

qreba47jhqb4e3lstrujvvdxqreba47jhqb4e3lstrujvvdx

96110

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  it should be stated that mogrify is part of imagemagick, which is available at imagemagick.org. however, mogrify uses ufraw-batch in the background, so might as well use that directly
  
  – dominik andreas
  Apr 22 '18 at 9:29
  

  
  
  
  


• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  +1 as mogrify circumvents the bug in ufraw-batch that leads to a segmentation fault (asper Sptember 2018)
  
  – Bruni
  Sep 23 '18 at 12:30
  

  
  
  
  

add a comment | 

For another alternative, use mogrify:

mogrify -format png *.cr2

share|improve this answer

edited 4 mins ago

Pablo Bianchi

2,88521534

answered Sep 27 '17 at 22:35

qreba47jhqb4e3lstrujvvdxqreba47jhqb4e3lstrujvvdx

96110

mogrify -format png *.cr2

share|improve this answer

edited 4 mins ago

Pablo Bianchi

2,88521534

answered Sep 27 '17 at 22:35

qreba47jhqb4e3lstrujvvdxqreba47jhqb4e3lstrujvvdx

96110

edited 4 mins ago

Pablo Bianchi

2,88521534

edited 4 mins ago

Pablo Bianchi

2,88521534

answered Sep 27 '17 at 22:35

qreba47jhqb4e3lstrujvvdxqreba47jhqb4e3lstrujvvdx

96110

answered Sep 27 '17 at 22:35

qreba47jhqb4e3lstrujvvdxqreba47jhqb4e3lstrujvvdx

96110

1

Try nconvert

As command line tool
OR
xnconvert as GUI tool

share|improve this answer

answered Jun 14 '14 at 22:08

YanesYanes

291

• 
  
  
  

  
  5
  

  
  
  
  
  
  

  
  
  Please explain how to use xnconvert.
  
  – NGRhodes
  Jun 14 '14 at 22:10
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  This is now a Famous Question. We do not like these sort of answers. This should be deleted.
  
  – ubashu
  Aug 2 '16 at 3:15
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  ./nconvert -out jpeg -truecolors /path/to/images/folder/*.CR2
  
  – Sagar Nikam
  Jan 15 at 10:47
  

  
  
  
  

add a comment | 

1

Try nconvert

As command line tool
OR
xnconvert as GUI tool

share|improve this answer

answered Jun 14 '14 at 22:08

YanesYanes

291

• 
  
  
  

  
  5
  

  
  
  
  
  
  

  
  
  Please explain how to use xnconvert.
  
  – NGRhodes
  Jun 14 '14 at 22:10
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  This is now a Famous Question. We do not like these sort of answers. This should be deleted.
  
  – ubashu
  Aug 2 '16 at 3:15
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  ./nconvert -out jpeg -truecolors /path/to/images/folder/*.CR2
  
  – Sagar Nikam
  Jan 15 at 10:47
  

  
  
  
  

add a comment | 

Try nconvert

As command line tool
OR
xnconvert as GUI tool

share|improve this answer

answered Jun 14 '14 at 22:08

YanesYanes

291

share|improve this answer

answered Jun 14 '14 at 22:08

YanesYanes

291

answered Jun 14 '14 at 22:08

YanesYanes

291

answered Jun 14 '14 at 22:08

YanesYanes

291

1

You could also program a simple loop in the console.

For example (using the fish console), and assuming the active directory only has RAW files.

set files (ls)

for i in $files

    dcraw $i

end

or

set files (ls)

for i in $files

    ufraw-batch --out-type=tif --out-depth $i

end

I use ufraw-batch that way because it often leads to an error, see https://bugs.launchpad.net/ubuntu/+source/ufraw/+bug/1768855 .

share|improve this answer

answered Sep 14 '18 at 12:17

user258532user258532

660919

add a comment | 

1

You could also program a simple loop in the console.

For example (using the fish console), and assuming the active directory only has RAW files.

set files (ls)

for i in $files

    dcraw $i

end

or

set files (ls)

for i in $files

    ufraw-batch --out-type=tif --out-depth $i

end

I use ufraw-batch that way because it often leads to an error, see https://bugs.launchpad.net/ubuntu/+source/ufraw/+bug/1768855 .

share|improve this answer

answered Sep 14 '18 at 12:17

user258532user258532

660919

add a comment | 

You could also program a simple loop in the console.

For example (using the fish console), and assuming the active directory only has RAW files.

set files (ls)

for i in $files

    dcraw $i

end

or

set files (ls)

for i in $files

    ufraw-batch --out-type=tif --out-depth $i

end

I use ufraw-batch that way because it often leads to an error, see https://bugs.launchpad.net/ubuntu/+source/ufraw/+bug/1768855 .

share|improve this answer

answered Sep 14 '18 at 12:17

user258532user258532

660919

set files (ls)

for i in $files

    dcraw $i

end

set files (ls)

for i in $files

    ufraw-batch --out-type=tif --out-depth $i

end

share|improve this answer

answered Sep 14 '18 at 12:17

user258532user258532

660919

answered Sep 14 '18 at 12:17

user258532user258532

660919

answered Sep 14 '18 at 12:17

user258532user258532

660919

1

The method that really worked for me:

You need dcraw and ppmtojpeg (install with apt)

for i in *.CR2; do dcraw -c $i | ppmtojpeg > $1.jpg; echo $i done; done

What it does: First convert CR2 to PPM with dcraw passing the output to ppmtojpeg which converts to JPG.

I found this here

share|improve this answer

answered Feb 16 at 19:56

PeterPeter

111

add a comment | 

1

The method that really worked for me:

You need dcraw and ppmtojpeg (install with apt)

for i in *.CR2; do dcraw -c $i | ppmtojpeg > $1.jpg; echo $i done; done

What it does: First convert CR2 to PPM with dcraw passing the output to ppmtojpeg which converts to JPG.

I found this here

share|improve this answer

answered Feb 16 at 19:56

PeterPeter

111

add a comment | 

The method that really worked for me:

You need dcraw and ppmtojpeg (install with apt)

for i in *.CR2; do dcraw -c $i | ppmtojpeg > $1.jpg; echo $i done; done

What it does: First convert CR2 to PPM with dcraw passing the output to ppmtojpeg which converts to JPG.

I found this here

share|improve this answer

answered Feb 16 at 19:56

PeterPeter

111

for i in *.CR2; do dcraw -c $i | ppmtojpeg > $1.jpg; echo $i done; done

share|improve this answer

answered Feb 16 at 19:56

PeterPeter

111

answered Feb 16 at 19:56

PeterPeter

111

answered Feb 16 at 19:56

PeterPeter

111

0

Use:

exiftool -Composite:PreviewImage -b photo.CR2 > photo.jpg

Longer answer:

ufraw-batch conversion quality is very bad. Imagemagick uses ufraw under the hoods (unfortunately). dcraw is better, but still not great. The best solution I found out was to use exif to extract PreviewImage metadata. I believe that's generated by the camera itself.

Ref: https://www.imagemagick.org/discourse-server/viewtopic.php?f=3&t=6936&sid=9548c421f1bd69f192e632d06ca03dff&start=30#p130949

share|improve this answer

answered Jan 6 at 19:51

Rafael XavierRafael Xavier

456149

add a comment | 

0

Use:

exiftool -Composite:PreviewImage -b photo.CR2 > photo.jpg

Longer answer:

ufraw-batch conversion quality is very bad. Imagemagick uses ufraw under the hoods (unfortunately). dcraw is better, but still not great. The best solution I found out was to use exif to extract PreviewImage metadata. I believe that's generated by the camera itself.

Ref: https://www.imagemagick.org/discourse-server/viewtopic.php?f=3&t=6936&sid=9548c421f1bd69f192e632d06ca03dff&start=30#p130949

share|improve this answer

answered Jan 6 at 19:51

Rafael XavierRafael Xavier

456149

add a comment | 

Use:

exiftool -Composite:PreviewImage -b photo.CR2 > photo.jpg

Longer answer:

ufraw-batch conversion quality is very bad. Imagemagick uses ufraw under the hoods (unfortunately). dcraw is better, but still not great. The best solution I found out was to use exif to extract PreviewImage metadata. I believe that's generated by the camera itself.

Ref: https://www.imagemagick.org/discourse-server/viewtopic.php?f=3&t=6936&sid=9548c421f1bd69f192e632d06ca03dff&start=30#p130949

share|improve this answer

answered Jan 6 at 19:51

Rafael XavierRafael Xavier

456149

exiftool -Composite:PreviewImage -b photo.CR2 > photo.jpg

share|improve this answer

answered Jan 6 at 19:51

Rafael XavierRafael Xavier

456149

answered Jan 6 at 19:51

Rafael XavierRafael Xavier

456149

answered Jan 6 at 19:51

Rafael XavierRafael Xavier

456149