IPTC editing lossless?

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spankee
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Joined: Sat Jan 08, 2005 12:00 am

IPTC editing lossless?

Post by spankee » Sat Jan 08, 2005 12:02 am

Hi! does XnView support lossless editing?
Thanks

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Olivier_G
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Post by Olivier_G » Sat Jan 08, 2005 12:49 am

IPTC data are metadata that are added "along" the image and embedded in the file. It shouldn't affect the image part at all...

Just to be quite sure :D , I used imagemagick "identify -verbose" to check that the Signature (ie: checksum) of the image was the same before and after IPTC creation/edition (I used all fields). Results => Same-Same... :mrgreen:

So yes: XnView does support lossless editing (just as it should be).

Olivier

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Post by Guest » Mon Jan 10, 2005 8:27 pm

Great! Thanks for testing that!

marsh
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Re: IPTC editing lossless?

Post by marsh » Sun May 24, 2009 2:29 am

The browser's compare tool displays equal crc also (interesting to me because it shows that the image data is being checked (unlike a typical archiver which uses the whole file).

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