We have some previous bug report about this. Search convert and size on the pts. I have not a full internet connection but this bug is tagged fixed upstream. Feel free to merge the two bug report
Bastien Le 13 oct. 2010 23:45, "H. S. Teoh" <hst...@quickfur.ath.cx> a écrit : Package: imagemagick Version: 8:6.6.0.4-2.2 Severity: normal Since about version 5 or so, imagemagick has started to always add metadata fields to output files that support it. The date:create and date:modify fields are always added to PNG files. This is problematic when script-generated images are managed by SVN, because SVN always finds a difference in the image files even though their content and other non-volatile metadata are identical. This behaviour can be suppressed in `convert` by specifying `+set date:create +set date:modify`; the properties are not written to the target file. However, `mogrify`, which modifies the file in-place, does not appear to respect this. It will ALWAYS set date:create and date:modify in the file regardless of whether the +set options are specified. This is a bug. T -- He who does not appreciate the beauty of language is not worthy to bemoan its flaws.