ImageResizer.Plugins.Imageflow 5.0.13-preview09

The ID prefix of this package has been reserved for one of the owners of this package by Prefix Reserved
This is a prerelease version of ImageResizer.Plugins.Imageflow.
dotnet add package ImageResizer.Plugins.Imageflow --version 5.0.13-preview09
NuGet\Install-Package ImageResizer.Plugins.Imageflow -Version 5.0.13-preview09
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package.
<PackageReference Include="ImageResizer.Plugins.Imageflow" Version="5.0.13-preview09" />
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add ImageResizer.Plugins.Imageflow --version 5.0.13-preview09
#r "nuget: ImageResizer.Plugins.Imageflow, 5.0.13-preview09"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package.
// Install ImageResizer.Plugins.Imageflow as a Cake Addin
#addin nuget:?package=ImageResizer.Plugins.Imageflow&version=5.0.13-preview09&prerelease

// Install ImageResizer.Plugins.Imageflow as a Cake Tool
#tool nuget:?package=ImageResizer.Plugins.Imageflow&version=5.0.13-preview09&prerelease


This is an image processing backend that uses the Imageflow library by yours truly. Imageflow is written in Rust for speed and security, and offers incredible performance and file optimization.


  • Enable pre-release packages in NuGet
  • Install-Package ImageResizer.Plugins.Imageflow -pre
  • Install-Package -pre installs the 32-bit imageflow.dll
  • Install-Package -pre installs the 64-bit imageflow.dll
  • Add <add name="Imageflow" /> to the <resizer><plugins> section of Web.config to use Imageflow.
  • The functionality from most plugins has been integrated into the core or into Imageflow, drastically simplifying maintenance for the most common features.
  • Remove references to Wic*, PrettyGifs, AnimatedGifs, Watermark, SimpleFilters, WhitespaceTrimmer, WebP, AdvancedFilters, FastScaling.x86 and FastScaling.x64 from both nuget.config and Web.config.
  • Note that Imageflow does not yet support .TIFF files. The default pipeline will be used for these, so advanced file editing and compression will not be available.

Images are rotated using metadata

Images are now rotated, by default, based on EXIF metadata from the gravity sensor in your camera/phone. We've suggested setting <pipeline defaultCommands="autorotate.default=true"/> for five years now, so this may not affect you.

The Imageflow backend does not support &autorotate=false.

Most AdvancedFilters commands are gone (it was an alpha plugin)

  • Imageflow now implements a.balancewhite.
  • Sharpening is now done with f.sharpen & Imageflow, not a.sharpen, and a.sharpen is ignored. We don't map the command since they produce different results.
  • Blurring and noise removal are not yet supported, so a.removenoise and a.blur are ignored.
  • a.oilpainting, a.sobel, a.threshold, a.canny, a.equalize, a.posterize are gone.

Imageflow will not be used in niche cases

The default GDI pipeline will be used (thus disabling file optimization, filters, and other Imageflow features) under the following conditions:

  • &rotate values other than 0, 90, 180, 270 (or another multiple of 90) are used.
  • The input file has a .tiff, .tff, .tif, or .bmp extension (Imageflow does not support TIFF and BMP formats, yet).
  • &frame=x is used to select a frame from an animated GIF.
  • paddingWidth, paddingHeight, margin, borderWidth, borderColor or paddingColor are used (obsolete, we have good CSS now). &bgcolor=AARRGGBB is still supported, of course.

Imageflow supports nearly everything:

mode, anchor, flip, sflip, quality, zoom, dpr, crop, cropxunits, cropyunits, w, h, width, height, maxwidth, maxheight, format, srotate, rotate, stretch, webp.lossless, webp.quality, f.sharpen, f.sharpen_when, down.colorspace, bgcolor, jpeg_idct_downscale_linear, watermark, s.invert, s.sepia, s.grayscale, s.alpha, s.brightness, s.contrast, s.saturation, trim.threshold, trim.percentpadding, a.balancewhite,, decoder.min_precise_scaling_ratio, scale, preset, s.roundcorners, ignoreicc

Product Compatible and additional computed target framework versions.
.NET Framework net472 is compatible.  net48 was computed.  net481 was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages

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Version Downloads Last updated
5.0.13-preview09 229 9/30/2023
5.0.11-preview08 325 12/23/2022
5.0.10-preview07 122 11/17/2022
5.0.9-preview06 120 11/4/2022
5.0.8-preview05 123 11/4/2022
5.0.7-preview-04 141 10/14/2022
5.0.6-preview03 121 10/14/2022
5.0.5-preview02 126 9/29/2022
5.0.4-preview01 127 8/26/2022
5.0.3-preview04 135 8/26/2022