[TYPO3-dev] passing params to image magick to clean jpgs from metadata

[Tim Kleigrewe]

hi list,

an old topic but still not really solved - meta data/profiles in jpg
images. a stupid browser named Win IE 5.5 even crashed by viewing images
that contained mac xml/photoshop metadata. IM keeps this profile info by
default.

here an example of a user submitted image, not 'saved for web'. have a
look at the binary to see lots of xml:

http://demo.e27.com/VotingGalleryImage_430.jpg   (170k)

and a clean variant with '-strip' or ' +profile "*"' recalculated
parameter used by IM5:

http://demo.e27.com/VotingGalleryImage_430_repaired.jpg (37k)

that works fantastic, but i had to hardcode that parameter to the t3lib
stdGraphic class 3 times.

line 268: $this->cmds['jpg'] = $this->cmds['jpeg'] = '-colorspace RGB
-sharpen 50  +profile "*" -quality '.$this->jpegQuality;

the best practice would be in my opinion to have a localconf var that
could be set with 'additional params' for IM. There are other possible
usfull parameters that could be passed to IM from there e.g.
'-copyright' if someone needs it.

one problem left, an option to tell IM to recalculate images that are
allready in the right size, or does this feature exist?



regards tim