How to convert CR2 to JPG or PNG?












26















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










share|improve this question





























    26















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










    share|improve this question



























      26












      26








      26


      8






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










      share|improve this question
















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







      image-processing






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      share|improve this question













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      edited Jun 14 '14 at 23:25









      Braiam

      51.6k20136220




      51.6k20136220










      asked Jun 14 '14 at 21:12









      user284848user284848

      138135




      138135






















          6 Answers
          6






          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































            41














            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



















            • 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






            • 1





              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



















            2














            For another alternative, use mogrify.




            mogrify -format PNG *.CR2







            share|improve this answer



















            • 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






            • 1





              +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



















            1














            Try nconvert



            As command line tool
            OR
            xnconvert as GUI tool






            share|improve this answer



















            • 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



















            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































              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























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                6 Answers
                6






                active

                oldest

                votes








                6 Answers
                6






                active

                oldest

                votes









                active

                oldest

                votes






                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




























                  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


























                    13












                    13








                    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













                    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












                    share|improve this answer



                    share|improve this answer










                    answered Jun 14 '14 at 21:19







                    user224082
































                        41














                        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



















                        • 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






                        • 1





                          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
















                        41














                        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



















                        • 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






                        • 1





                          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














                        41












                        41








                        41







                        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













                        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












                        share|improve this answer



                        share|improve this answer










                        answered Apr 5 '15 at 21:49









                        Evan CarrollEvan Carroll

                        4,719103466




                        4,719103466








                        • 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






                        • 1





                          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














                        • 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






                        • 1





                          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








                        1




                        1





                        ufraw-batch is awesome!

                        – jemiloii
                        Sep 13 '16 at 20:00





                        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





                        ufraw-batch --out-type png $(ls IMG_93{44..99}* 2>| cat)

                        – smac89
                        Feb 19 '18 at 0:07




                        1




                        1





                        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





                        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











                        2














                        For another alternative, use mogrify.




                        mogrify -format PNG *.CR2







                        share|improve this answer



















                        • 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






                        • 1





                          +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
















                        2














                        For another alternative, use mogrify.




                        mogrify -format PNG *.CR2







                        share|improve this answer



















                        • 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






                        • 1





                          +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














                        2












                        2








                        2







                        For another alternative, use mogrify.




                        mogrify -format PNG *.CR2







                        share|improve this answer













                        For another alternative, use mogrify.




                        mogrify -format PNG *.CR2








                        share|improve this answer












                        share|improve this answer



                        share|improve this answer










                        answered Sep 27 '17 at 22:35









                        qreba47jhqb4e3lstrujvvdxqreba47jhqb4e3lstrujvvdx

                        86110




                        86110








                        • 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






                        • 1





                          +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














                        • 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






                        • 1





                          +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








                        1




                        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





                        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




                        1




                        1





                        +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





                        +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











                        1














                        Try nconvert



                        As command line tool
                        OR
                        xnconvert as GUI tool






                        share|improve this answer



















                        • 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
















                        1














                        Try nconvert



                        As command line tool
                        OR
                        xnconvert as GUI tool






                        share|improve this answer



















                        • 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














                        1












                        1








                        1







                        Try nconvert



                        As command line tool
                        OR
                        xnconvert as GUI tool






                        share|improve this answer













                        Try nconvert



                        As command line tool
                        OR
                        xnconvert as GUI tool







                        share|improve this answer












                        share|improve this answer



                        share|improve this answer










                        answered Jun 14 '14 at 22:08









                        YanesYanes

                        291




                        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














                        • 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








                        5




                        5





                        Please explain how to use xnconvert.

                        – NGRhodes
                        Jun 14 '14 at 22:10





                        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





                        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





                        ./nconvert -out jpeg -truecolors /path/to/images/folder/*.CR2

                        – Sagar Nikam
                        Jan 15 at 10:47











                        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




























                          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


























                            1












                            1








                            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













                            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












                            share|improve this answer



                            share|improve this answer










                            answered Sep 14 '18 at 12:17









                            user258532user258532

                            637818




                            637818























                                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




























                                  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


























                                    0












                                    0








                                    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













                                    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












                                    share|improve this answer



                                    share|improve this answer










                                    answered Jan 6 at 19:51









                                    Rafael XavierRafael Xavier

                                    456149




                                    456149






























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