karl-sjogren / shorthand.imagesharp.webp

Adds a WebP format for ImageSharp. Only for encoding images so far.

Shorthand.ImageSharp.WebP

Adds support for encoding WebP images using libwebp to ImageSharp.

Why is this needed?

When ImageSharp 2.x encodes transparent images with compression, the file size is larger then even doing lossless webp encoding. This was fixed in ImageSharp 3.x, but with the new license this isn't feasible to all projects. So this makes it possible to encode transparent WebP images properly on ImageSharp 2.0.

Issue: SixLabors/ImageSharp#2332

Usage

If running or deploying on Linux you need to install libwebp-dev.

sudo apt-get update -y && sudo apt-get install -y libwebp-dev

Sample images from Pexels, https://www.pexels.com/sv-se/license/ or https://www.pexels.com/sv-se/creative-commons-images/.

https://www.pexels.com/sv-se/@pok-rie-33563 https://www.pexels.com/sv-se/@naushil-ansari-151720

shorthand.imagesharp.webp's Issues

Usage of web

How do I use this for imagesharp web? How can I register it?

Interface IImageEncoder changed

They added CancellationToken and now your method EncodeAsync doesn't work, cuz it says that there is no implementation. Please, help

Broken Pipe

Hi Karl,
I added Shorthand.ImageSharp.WebP on my .net core project, its working very well on my local system with macOS. I deployed on a Linux server with a docker container, but I receiving a Broken pipeline error.
My error has occurred on WebPEncoder.cs on stream block. All DLL files are already located in the correct location. Can you help for this problem?

Stacktrace:
System.IO.IOException: Broken pipe
at System.IO.FileStream.WriteNative(ReadOnlySpan1 source) at System.IO.FileStream.WriteSpan(ReadOnlySpan1 source)
at System.IO.FileStream.Write(Byte[] array, Int32 offset, Int32 count)
at System.IO.MemoryStream.CopyTo(Stream destination, Int32 bufferSize)
at System.IO.Stream.CopyTo(Stream destination)