Hi Marti,

Marti Maria wrote:

There is no exact way to do that, because same colorspace can be encoded in different profiles otherwise numerically equivalent. In practice, it is enough to check whatever both files are equal DISCOUNTING THE HEADER. This is important because some flags may be changed when embedding. V4 ProfileID is computed taking the MD5 of whole profile after header, and this would be enough in most cases.

Thanks for the response - how likely am I to encounter pre-V4 profiles that don't have a ProfileID available?


Any chance of LCMS transparently calculating a suitable ID for pre-V4 profiles in the future (or does it already)?

All the best,
--
Alastair M. Robinson


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