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al7jones
New Participant
June 13, 2012
Question

Cropping to a specific size in pixels

  • June 13, 2012
  • 2 replies
  • 21894 views

I can see how to lock in an aspect ratio, but can I use Lightroom to crop a photo to a very specific size in pixels so that I can then upload it to a website in a spot of just that size?

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    2 replies

    M
    martin-s9001387
    Inspiring
    June 13, 2012

    No, this involves 2 steps in Lightroom…

    say you wanted an image at 800/600px, you'd first crop it using an 8/6 ratio and then export it using the resize option set to 800/600px or simply 800px at the long end. You can define different export presets for different output sizes, which makes this a fairly quick procedure. Also the crop tool will remember your custom ratios.

    A
    al7jonesAuthor
    New Participant
    June 13, 2012

    Martin, Thanks. That's very helpful. But, I don't see where the tool is that allows me to define the export by size. Where is that?

    John Waller
    John Waller
    Community Expert
    June 13, 2012

    Library module > Export > Image Sizing

      web-weaver
      web-weaver
      Inspiring
      June 13, 2012

      If you want to upload a photo for a website, you need to create a JPG. This is done by exporting, and the Export Dialog gives you several options for resizing an image.

      One option is to enter the pixel dimensions directly.

      If you want to change the aspect ratio of your photo you have to crop it first in the Develop Module. In the Crop Tool enter the pixel dimensions you want under <Enter Custom>.

      You can just enter pixel numbers there, like for instance 1345 x 2345, or whatever.

      A
      al7jonesAuthor
      New Participant
      June 13, 2012

      Thanks, Web Weaver, but I'm not sure where the "Enter Custom" area that you refer to is found. I opened Develop > Crop, and cropped the photo first by using the resizing handles and then by entering specific dimensions in the Crop Tool "Aspect" area. But, when I exported it, the aspect ratio was correct, but the size of the image was too large. Where is there an Enter Custom area that actually lets me set the final exportable size?  Thanks!

      web-weaver
      web-weaver
      Inspiring
      June 13, 2012

      It's in the Crop Tool (Develop Module) where you entered the dimensions. When you click on the double arrows besides the padlock, in the fly-out menu about 2/3 down there is <Enter Custom>. Just enter your desired pixel numbers there. Naturally this is cropping, i.e. cutting away parts of an image. If you want to resize the image without cutting away parts of it you have to do that in the Export dialog.

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