Jpg with round corner and white background

[YvesTan]

Hello,

I try to generate photos thumbnails jpg with white background. I use this command :

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convert -size 100x100 xc:none -draw 'roundRectangle 0,0 100,100 15,15' -fill white original.jpg -compose SrcIn -composite thumbnail.jpg

But I dont understand why it's not working (I obtain black corner).

It's great with png out but the image is too bigger ! 40 Ko for 100x100 simple png...

Thanks !

YvesTan (french user)

[Bonzo]

I do not know if this is a valid way to use ImageMagick and I could not get all the code on one line:

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composite -compose Dst_in ( convert -size 100x100 xc:none -fill black -draw "roundRectangle 0,0 100,100 15,15" ) house.jpg -matte thumbnail.png

convert -size 100x100 xc:white thumbnail.png -composite output.jpg

Your black corners are still comming from the transparency.

[YvesTan]

Thanks to your answer. I've use a similar way with 2 command line.

The first on my previous post and

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convert thumbnail.png -background white -flatten thumbnail_out.jpg

And after "rm thumbnail.png"

Bye !

[anthony]

while flatten will not work with mogrify for in-place image modification, (it is a multi-image layers operator after all. an alturnative is border.

mogrify -bordercolor white -border 0x0 thumbnail.png