codecs.save

I'm using release 16.5.

when using this code:
_Codecs.Save(_viewer.Image, LocalFilePath, RasterImageFormat.TifLzw, 0, 1, 1, iListIndex + 1, CodecsSavePageMode.Replace )

and lets say i use it 4 or 5 times without actually changing anything with _viewer.Image , my resulting file (tif) for each save keeps getting bigger and bigger. Becuase i'm using the Replace option my assumption is that it would actually replace what is there... By all rights it is working and it is replacing that one page but why does my file keep growing in size?

I used _Codecs.CompactFile(LocalFilePath, ToFilePath, 0) and it shrunk it back to the correct size but it slows the program down because i have to compact to one file path and then back to the original file path. Is there something wrong with the codecs.save? or something else you can suggest.

thanks

The CodecsSavePageMode.Replace option will flag the page as deleted without actually deleting it. If you want to replace the entire file, you can use the CodecsSavePageMode.Overwrite option or just use the CompactFile to compact and clean the file from the deleted pages.