imgproxy-dotnet

imgproxy is a fast and secure standalone server for resizing and converting remote images. The main principles of imgproxy are simplicity, speed, and security. It is a Go application, ready to be installed and used in any Unix environment—also ready to be containerized using Docker.

imgproxy can be used to provide a fast and secure way to replace all the image resizing code of your web application (like calling ImageMagick or GraphicsMagick, or using libraries), while also being able to resize everything on the fly, fast and easy. imgproxy is also indispensable when handling lots of image resizing, especially when images come from a remote source.

imgproxy-dotnet is a small C# lib, that helps to build correct URLs for imgproxy.

Features

Support imgproxy 1.x URL format
Support imgproxy 2.x URL format (recomended)

Installation

Using .NET CLI

dotnet add package ImgProxy --version 2.3.0

or using Package Manager

Install-Package ImgProxy -Version 2.3.0

Usage

Create new builder for each call

const string host = "https://cdn.example.com";
const string key = "736563726574";
const string salt = "68656C6C6F";
const string source = "https://upload.wikimedia.org/wikipedia/ru/2/24/Lenna.png";

var bulder = ImgProxyBuilder.New
                .WithEndpoint(host)
                .WithCredentials(key, salt)
                .WithResize(ResizingTypes.Fill, 300, 400, true)
                .WithFormat(Formats.JPG);

var url = bulder.Build(source, encode: false);

Or cache global-configured instance, e.g. in Sturtup.cs

var bulder = ImgProxyBuilder.New
                .WithEndpoint(host)
                .WithCredentials(key, salt)
                .WithResize(ResizingTypes.Fill, 300, 400, true)
                .WithFormat(Formats.JPG);
            
ImgProxyBuilder.Instance = bulder;
                
var url =  ImgProxyBuilder.Instance.Build(source, encode: false);

Also you can pass additional options in time of build. Cached builder will not be affected. In case of duplicate options (defined in bulder and passed via param), options from params will be used.

var additionalOptions = new ImgProxyOption[]
{
      new GravityOption(Gravity),
      new FormatOption(Formats.JPG)
};

var url = bulder.Build(Url, additionalOptions, encode: false);

Supported options

Pass this options to .WithOptions ot .Build methods:

ResizeOption
ResizingTypeOption
ResizingAlgorithmOption
SizeOption
WidthOption
HeightOption
DprOption
RotateOption
QualityOption
MaxBytesOption
BackgroundOption
BackgroundAlphaOption
AdjustOption
BrightnessOption
ContrastOption
SaturationOption
BlurOption
SharpenOption
PixelateOption
UnsharpeningOption
EnlargeOption
ExtendOption
CropOption
PaddingOption
TrimOption
GravityOption
JpegOption
PngOption
GifOption
WatermarkOption
WatermarkUrlOption
PageOption
VideoThumbnailSecondOption
StyleOption
CacheBusterOption
StripMetadataOption
StripColorProfileOption
FormatOption
AutoRotateOption
FilenameOption
PresetOption

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/okolobaxa/imgproxy-dotnet.

If you are having any problems with image processing of imgproxy itself, be sure to visit https://github.com/imgproxy/imgproxy first and check out the docs at https://github.com/imgproxy/imgproxy/blob/master/docs/.

License

The lib is available as open source under the terms of the MIT License.