WebP encoding not honouring the Exif orientation data?

[robertjf]

Prerequisites

• I have written a descriptive issue title
• I have verified that I am running the latest version of ImageSharp.Web
• I have verified if the problem exist in both DEBUG and RELEASE mode
• I have searched open and closed issues to ensure it has not already been reported

ImageSharp.Web version

3.1.3

Other Six Labors packages and versions

SixLabors.ImageSharp 3.1.5

Environment (Operating system, version and so on)

Umbraco 13.4.1, Umbraco Cloud

.NET version

8

Description

We have come across an image or two that behave strangely when the webp format is applied in the query string to manipulate the image:

In order to test with the latest version of ImageSharp/ImageSharp.Web I have applied the latest versions of the NuGet packages to the project. The original versions were 3.1.3 and 3.1.0 respectively.

This is the URL for the image on the left:

https://youritteam.com.au/media/wzpnn4zs/image-5.jpeg?width=800&height=1067&format=webp&quality=70&v=1dadd68d1c2e900 (broken)

And this is the same URL without the webp format applied, which renders in the correct orientation:

https://youritteam.com.au/media/wzpnn4zs/image-5.jpeg?width=800&height=1067&quality=70&v=1dadd68d1c2e900

The original image is below (it's possible the copy on the website will be replaced soon).

Steps to Reproduce

Host the sample image and render it with the format=webp (no other parameters are required) on the URL.

Images

[JimBobSquarePants]

See https://github.com/SixLabors/ImageSharp.Web/issues/375

It's the browser. It doesn't respect the EXIF metadata

[robertjf]

Hm. Given that this is the case, is there an option to ignore exif when applying WebP as a way around this?

[JimBobSquarePants]

No, you can't really ignore the format like that.

You could inject your own version of AutoOrientWebProcessor that only operates if the format is WebP or you intend to convert to WebP though. You would ensure it always runs first by injecting a command via OnParseCommandsAsync