ImageResizer.Plugins.Imageflow 5.1.0-rc01

ImageResizer.Plugins.Imageflow

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.

Installation

• Enable pre-release packages in NuGet
• Install-Package ImageResizer.Plugins.Imageflow -pre
• Install-Package Imageflow.NativeRuntime.win-x86 -pre installs the 32-bit imageflow.dll
• Install-Package Imageflow.NativeRuntime.win-x86_64 -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, jpeg.progressive, decoder.min_precise_scaling_ratio, scale, preset, s.roundcorners, ignoreicc