I convert RGB and CMYK TIFF images to RGB JPEGs using
convert a.tif -colorspace rgb a.jpg
If the TIFF image contains only gray pixels, the colorspace of the resulting JPEG is gray, not RGB.
How can I force ImageMagick to always use RGB?
Try this:
convert a.tif -colorspace rgb -type truecolor a.jpg
However, I have to ask: How exactly do you determine your verdict 'colorspace of resulting JPEG is gray, not RGB'?!?
The ImageMagick tool identify
can look at the colorspace used by files. If you have convert
, then you'll have identify
too:
identify -format "%[colorspace] <== %f\n" *.png *.jpeg *.pdf *.tif
Example output:
sRGB <== fullsize-coalesce-originals.png
Gray <== tiffg4.tif
CMYK <== cmyk.pdf
CMYK <== photoshop.jpeg
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