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8 bit png warning / enhancement

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8 bit png warning / enhancement M.W. 19 Jan 10:34
  8 bit png warning / enhancement David Hodson 19 Jan 12:17
M.W.
2010-01-19 10:34:06 UTC (about 15 years ago)

8 bit png warning / enhancement

Hi,

I wanted to ask if it were possible to add some kind of warning to the png export settings that pngs are only saved as 8 bit png. It is not obvious that saving as (lossless) png causes loss when using Gimp, because the input was 16 bit greyscale and the output ends up with 8 bit greyscale.

I read that there is developement going on to implement 16 bit png, but a warning till then would really help.

Thank you for your time and efforts.

Malte.

David Hodson
2010-01-19 12:17:15 UTC (about 15 years ago)

8 bit png warning / enhancement

On Tue, 2010-01-19 at 10:34 +0100, M.W. wrote:

I wanted to ask if it were possible to add some kind of warning to the png export settings that pngs are only saved as 8 bit png. It is not obvious that saving as (lossless) png causes loss when using Gimp, because the input was 16 bit greyscale and the output ends up with 8 bit greyscale.

This has nothing to do with exporting png files. The conversion happens when you open the file - all images in Gimp are only 8 bits per channel.

-- David