Page 1 of 2 12 LastLast
Results 1 to 10 of 11

Thread: GIMP photo manipulations

  1. #1
    Join Date
    Sep 2009
    Location
    NW Kent, UK
    Posts
    196

    Default GIMP photo manipulations

    I have just migrated from 11.4 to 12.3 and don't understand how to reduce photo size using the new version of GIMP.

    Previously, with a jpg, all I needed to do was to open this in GIMP, hit save as, saying yes to replacing the original photo, and then using the slider to reduce the size of the photo.

    It is this last part that is all I need GIMP for.

    How, in the version of GIMP included in 12.3 can I do this: open the jpg and saving it as a much smaller version of the same photo? Where is the slider? When I attempt to do this using the previous method, I don't get a slider and the file extension of anything that is saved is different, too.

    Functionality appears to have lessened, or is it me?

    Many thanks for all your help.

    If is helps, I am using a Gnome desktop.

  2. #2

    Default AW: GIMP photo manipulations

    Quote Originally Posted by Crossbone View Post
    How, in the version of GIMP included in 12.3 can I do this: open the jpg and saving it as a much smaller version of the same photo? Where is the slider? When I attempt to do this using the previous method, I don't get a slider and the file extension of anything that is saved is different, too.
    I don't know about that slider, but you can change the picture size by selecting "Image"->"Scale Image..." from the menu.

    In newer GIMP versions "Save" and "Save As..." always save in GIMPs own format (xcf).
    If you want to save as jpg or something else, you have to use "Export...".

  3. #3
    Join Date
    Feb 2009
    Location
    Spain
    Posts
    25,547

    Default Re: GIMP photo manipulations

    On 2013-07-17 11:56, Crossbone wrote:
    >
    > I have just migrated from 11.4 to 12.3 and don't understand how to
    > reduce photo size using the new version of GIMP.
    >
    > Previously, with a jpg, all I needed to do was to open this in GIMP,
    > hit save as, saying yes to replacing the original photo, and then using
    > the slider to reduce the size of the photo.


    You have to use export (to jpg) instead of save or save as.

    --
    Cheers / Saludos,

    Carlos E. R.
    (from 12.3 x86_64 "Dartmouth" at Telcontar)

  4. #4

    Default Re: GIMP photo manipulations

    I don't have a slider as such on 11.4 KDE. X-Y Pixel count is shown in boxes with with up down adjusters by the side of them and a setting to lock the aspect ratio. It's under image - scale image.

    Not sure what software you use but you might like to look at Fotoxx. Since finding it I hardly use anything else. It also has the ability to use other programs as plugins, including gimp,hugin or what ever. There are also a set of instructional video's available. An RPM for OpenSuse can be found in their build service by selecting show unstable versions - they are stable really and from some one who has built from source. 12.3 may have a lib update that causes problems building from source on 12.3

    fotoxx - kornelix

    It's designed to allow even experienced photo processors to do 99% of what they might want to do quickly and easily. It will build up thumbnails etc from all photo's in a directory if that aspect isn't disabled before loading the 1st photo. With several photo processing apps on my machine I am not keen on this as most of them do it now. STUPID comes to mind. Just assuming people only use one app.

    The Kornelix site also has some other interesting applications on it that may be of interest to gui users.

    John
    -

  5. #5

    Default Re: GIMP photo manipulations

    If you are doing this regularly then while Gimp is great and can do this
    (Scale Image) I'd personally recommend something more specific to the
    task. The ImageMagick RPM (easily added to openSUSE includes the
    'convert' command which is made to do these types of things. For example:

    Code:
    ----------
    convert -scale 1024 imageIn.jpg imageScaledOut.jpg
    ----------

    The command automatically scales the imageIn.jpg file down so that the (as
    I recall) X axis is 1024 pixels, and then the Y axis is proportionally
    scaled. Simple stuff, and fast. Put it in a loop to do a bunch of images
    at once.

    Good luck.

  6. #6

    Default Re: GIMP photo manipulations

    True but often people need a bit more than that

    Fotoxx

    • Batch functions: rename, resize/export, revise tags, import RAW files


    It tends to be very popular once people know it exists.

    I should add that it's thumbnail generation stuff is rather good and that if say a KDE photo processing filter is needed it should be possible to do it via plugin. Imagemagic too actually. I also use Photivo like that at times.

    John
    -

  7. #7
    Join Date
    Feb 2009
    Location
    Spain
    Posts
    25,547

    Default Re: GIMP photo manipulations

    On 2013-07-17 13:12, ab wrote:
    > If you are doing this regularly then while Gimp is great and can do this
    > (Scale Image) I'd personally recommend something more specific to the
    > task. The ImageMagick RPM (easily added to openSUSE includes the
    > 'convert' command which is made to do these types of things. For example:


    I think he refers to a specific feature of gimp when saving a jpg file,
    which now is in "export". If you tick the box "show preview in image
    window", gimp also displays the estimated file size; there is a slide
    rule for adjusting the ratio of compression to quality, so that you can
    see the size of the file obtained, and how the quality of the file
    changes because you see the photo displayed and changing.

    I don't know of any other that has this feature, which is very useful:
    you can, for example, reduce the quality of a screenshot that you are
    going to upload to susepaste as much as possible, making sure that the
    detail you need is not lost.

    As I said, the feature is now in the export menu, not the save menu.

    --
    Cheers / Saludos,

    Carlos E. R.
    (from 12.3 x86_64 "Dartmouth" at Telcontar)

  8. #8

    Default Re: GIMP photo manipulations

    On 07/17/2013 06:06 AM, John 82 wrote:
    >
    > True but often people need a bit more than that


    Sure, and that's fine, but still outside the scope of the desired
    functionality in this case. If you're going to use one tool that does way
    too much over another for simple size conversions, why use the one that
    you do not have?

    Good luck.

  9. #9
    Join Date
    Sep 2009
    Location
    NW Kent, UK
    Posts
    196

    Default Re: GIMP photo manipulations

    Thanks guys for all the feedback.

    In all honesty, I only need Gimp to downsize photos. I have to upload these as part of my work as a journalist and the limit is 2MB per photo. Many people send me 10MB+, so I need to downsize them.

    I have looked at Gimp and, indeed, the Export function does exactly what I am looking for, replicating the former "Save as" and size reduction slider on older versions of Gimp.

    But all comments noted and appreciated

  10. #10

    Default Re: GIMP photo manipulations

    Quote Originally Posted by Crossbone View Post
    Thanks guys for all the feedback.

    In all honesty, I only need Gimp to downsize photos. I have to upload these as part of my work as a journalist and the limit is 2MB per photo. Many people send me 10MB+, so I need to downsize them.

    I have looked at Gimp and, indeed, the Export function does exactly what I am looking for, replicating the former "Save as" and size reduction slider on older versions of Gimp.
    Oh, _THAT_ slider to set the jpeg quality.
    I thought you wanted to change the image size, i.e. downsize width and height of the picture.

Page 1 of 2 12 LastLast

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •