Thumbnail handling in lossless JPEG transformations

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Marcus Sundman

Thumbnail handling in lossless JPEG transformations

Post by Marcus Sundman »

It would be nice to be able to choose what to do with the embedded thumbnail when doing a lossless JPEG transformation.

The options could be:
  • perform the same transformation on the thumbnail
  • remove the thumbnail
  • don't do anything to the thumbnail
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helmut
Posts: 8704
Joined: Sun Oct 12, 2003 6:47 pm
Location: Frankfurt, Germany

Re: Thumbnail handling in lossless JPEG transformations

Post by helmut »

Marcus Sundman wrote:It would be nice to be able to choose what to do with the embedded thumbnail when doing a lossless JPEG transformation. ...
Think that's a good idea and an important feature which should be supported, soon. Rotating the JPG image and leaving the thumbnail unchanged is only half the job. ;-)

Thank you, Marcus.
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xnview
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Re: Thumbnail handling in lossless JPEG transformations

Post by xnview »

helmut wrote:
Marcus Sundman wrote:It would be nice to be able to choose what to do with the embedded thumbnail when doing a lossless JPEG transformation. ...
Think that's a good idea and an important feature which should be supported, soon. Rotating the JPG image and leaving the thumbnail unchanged is only half the job. ;-)
Yes, good improvment.
Pierre.
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Marcus Sundman

Re: Thumbnail handling in lossless JPEG transformations

Post by Marcus Sundman »

Marcus Sundman wrote:
  • perform the same transformation on the thumbnail
  • remove the thumbnail
  • don't do anything to the thumbnail
Let me add two more options:
  • regenerate thumbnail if one exists
  • (re)generate thumbnail regardless of if one exists or not
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