Possible to add Png metadata in Chunks? Baking images?

[siva538]

Hello ImageSharp team,

Looking for a feasibility of adding chunks to the Png file as form of metadata. To be specific looking to add iTXt chunk for open badges. Something similar to the baking process - https://github.com/concentricsky/openbadges-bakery

Thanks in advance!

[brianpopow]

you can add text data to png images like this:

using (var image = Image.Load(@"foobar.png"))
{
    PngMetadata inputMetadata = image.Metadata.GetFormatMetadata(PngFormat.Instance);
    inputMetadata.TextData.Add(new PngTextData("keyword", "example", "en-uk", "text"));
    image.Save("output.png");
}

I do not understand what you mean by "baking images"

[siva538]

Thanks @brianpopow . This worked like a charm. We would have to convert jpg to png etc,. but am hoping it would be straightforward. Thanks a lot for your help.

[JimBobSquarePants]

Image.SaveAsPng(...) is an explicit way of doing this.