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How to easily resize/optimize an image size with iOS?

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A couple of suggestions are provided as answers to this question. I had suggested the technique described in this post, with the relevant code: + (UIImage*)imageWithImage:(UIImage*)image scaledToSize:(CGSize)newSize; { UIGraphicsBeginImageContext( newSize ); [image drawInRect:CGRectMake(0,0,newSize.width,newSize.height)]; UIImage* newImage = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); return newImage; } As far as storage of the image, the fastest image format to use with … Read more

How can I color a UIImage in Swift?

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Swift 4 and 5 extension UIImageView { func setImageColor(color: UIColor) { let templateImage = self.image?.withRenderingMode(.alwaysTemplate) self.image = templateImage self.tintColor = color } } Call like this: let imageView = UIImageView(image: UIImage(named: “your_image_name”)) imageView.setImageColor(color: UIColor.purple) Alternativ For Swift 3, 4 or 5 extension UIImage { func maskWithColor(color: UIColor) -> UIImage? { let maskImage = cgImage! let … Read more

Action Image MVC3 Razor

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You can create an extension method for HtmlHelper to simplify the code in your CSHTML file. You could replace your tags with a method like this: // Sample usage in CSHTML @Html.ActionImage(“Edit”, new { id = MyId }, “~/Content/Images/Image.bmp”, “Edit”) Here is a sample extension method for the code above: // Extension method public static … Read more

How do I stretch an image to fit the whole background (100% height x 100% width) in Flutter?

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To make an Image fill its parent, simply wrap it into a FittedBox: FittedBox( child: Image.asset(‘foo.png’), fit: BoxFit.fill, ) FittedBox here will stretch the image to fill the space. (Note that this functionality used to be provided by BoxFit.fill, but the API has meanwhile changed such that BoxFit no longer provides this functionality. FittedBox should … Read more

How to reduce the image file size using PIL

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A built-in parameter for saving JPEGs and PNGs is optimize. from PIL import Image foo = Image.open(‘path/to/image.jpg’) # My image is a 200×374 jpeg that is 102kb large foo.size # (200, 374) # downsize the image with an ANTIALIAS filter (gives the highest quality) foo = foo.resize((160,300),Image.ANTIALIAS) foo.save(‘path/to/save/image_scaled.jpg’, quality=95) # The saved downsized image size … Read more

Image.Save(..) throws a GDI+ exception because the memory stream is closed

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As it’s a MemoryStream, you really don’t need to close the stream – nothing bad will happen if you don’t, although obviously it’s good practice to dispose anything that’s disposable anyway. (See this question for more on this.) However, you should be disposing the Bitmap – and that will close the stream for you. Basically … Read more

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