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How to resize image using command?

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How to resize image using command? Kf Lee 09 Jul 18:15
  How to resize image using command? Chris F.A. Johnson 09 Jul 18:41
  How to resize image using command? Ofnuts 09 Jul 19:33
  How to resize image using command? Liam R E Quin 10 Jul 02:35
Kf Lee
2014-07-09 18:15:53 UTC (almost 10 years ago)

How to resize image using command?

hi

I need to reduce the image size for faster web display. Can I issue gimp in command line, non interactive mode, to resize an image? Alse to to reduce further by lowering the quality?

Thanks.

kfl.

Chris F.A. Johnson
2014-07-09 18:41:23 UTC (almost 10 years ago)

How to resize image using command?

On Thu, 10 Jul 2014, Kf Lee wrote:

I need to reduce the image size for faster web display. Can I issue gimp in command line, non interactive mode, to resize an image? Alse to to reduce further by lowering the quality?

Use 'convert' from the ImageMagick package.

Ofnuts
2014-07-09 19:33:47 UTC (almost 10 years ago)

How to resize image using command?

On 09/07/14 20:15, Kf Lee wrote:

hi

I need to reduce the image size for faster web display. Can I issue gimp in command line, non interactive mode, to resize an image? Alse to to reduce further by lowering the quality?

Thanks.

kfl.

For this kind of use ImageMagick is much better than Gimp: http://www.imagemagick.org

See iin particular: http://www.imagemagick.org/Usage/resize/

Liam R E Quin
2014-07-10 02:35:15 UTC (almost 10 years ago)

How to resize image using command?

On Thu, 10 Jul 2014 02:15:53 +0800 Kf Lee wrote:

I need to reduce the image size for faster web display.

As others have said, convert works well, but for jpeg images you can use jpegoptim afterwards (and for png, pngcrush) to get further improvements.

Save the originals, and run e.g. "identify" before and after to make sure that jpegoptim hasn't corrupted the image -- very rarely, I find, it does.

Liam

Liam Quin - XML Activity Lead, W3C, http://www.w3.org/People/Quin/
Pictures from old books: http://fromoldbooks.org/