To choose a exact type from the PNG series and color control

[niha]

Hi guys,

I assumed all of you reading this had some experienced with the "Save for Web & Devices" option offered by Adobe PhotoShop.

Erm, inside that option, there something like choose to save to file format to be saved with ( Optimized File Format" on the tooltip ), there are 5 file formats : GIF/PNG8/PNG24/JPG/WBMP, as I did this command "identify -list format", and sure that ImageMagick support all the 5, but, how to convert exactly from someFile.jpg to PNG8 or PNG24 ?? Coz the file format stay still .png.

Thanks for reading.

P.S :

And, in the Color Table, there's a list of colors using in the picture where we can delete/map to transparent/lock...etc, I would like to know if using ImageMagicK I could retreive the colors using in the picture and the RGB information of that color ( just like PhotoShop ? ). Thanks again .

[anthony]

You are not making a lot of sense.

Generally to convert an image you do

Code: Select all

convert    someFile.jpg     someFile.png

or for a specific sub-format

Code: Select all

convert    someFile.jpg     PNG8:someFile.png

The filename will still be 'png' but internally the data is stored in a different (more restrictive) way.