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    <p>First off, make sure you are saving your image in a format that supports transparency. <code>PNG</code> does, <code>JPG</code> does not... Below is some pretty nice code that will add transparent corners. It works like this:</p> <ol> <li>Draws a circle with radius, <code>rad</code>, using <code>draw.ellipse()</code></li> <li>Create an image for the alpha channel the same size as your image</li> <li>Chop our circle into four pieces (the rounded corners), and place them in the correct corners of the alpha image</li> <li>Put the alpha channel into your image using <code>putalpha()</code></li> <li>Save as a <code>png</code>, thus preserving transparency.</li> </ol> <p>Here is the code:</p> <pre><code>import Image, ImageDraw def add_corners(im, rad): circle = Image.new('L', (rad * 2, rad * 2), 0) draw = ImageDraw.Draw(circle) draw.ellipse((0, 0, rad * 2, rad * 2), fill=255) alpha = Image.new('L', im.size, 255) w, h = im.size alpha.paste(circle.crop((0, 0, rad, rad)), (0, 0)) alpha.paste(circle.crop((0, rad, rad, rad * 2)), (0, h - rad)) alpha.paste(circle.crop((rad, 0, rad * 2, rad)), (w - rad, 0)) alpha.paste(circle.crop((rad, rad, rad * 2, rad * 2)), (w - rad, h - rad)) im.putalpha(alpha) return im im = Image.open('tiger.jpg') im = add_corners(im, 100) im.save('tiger.png') </code></pre> <p>example curved edge tiger:</p> <p><img src="https://i.stack.imgur.com/OKoXh.png" alt="enter image description here"></p> <p>here is your image, processed with this code, giving transparent corners:</p> <p><img src="https://i.stack.imgur.com/MFQ2T.png" alt="enter image description here"></p>
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    1. POhow to round_corner a logo without white background(transparent?) on it using pil?
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    1. USfraxel
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    1. COthanks,but it still got white corner on background.Check out this[link](http://www.flickr.com/photos/76230909@N03/7485468218/in/photostream) to see the problem, and I need the pink corner invisible, in your case white corner(U cannot see it here since it`s white, the same color as web page )..Hope u understand what i mean
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    2. CO@bdictator - please post your full code. and are you using my code and saving as a png?
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    3. COyes, I am using your code,check out my added code
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