Converting Multipage TIFF to PNG

[usagibear]

Hello, I am new to using ImageSharp. I am trying to convert a stream that has TIFF data and convert each frame into a PNG.

Is there a next frame or something like that or some way to iterate through or select the current frame?

Currently, this is what I have for converting a local TIFF into PNGs. Currently, only the first image/frame is saved but there may be multiple frames.

using (Image image = Image.Load("test.tif"))
{
    Console.WriteLine($"{image}");
    Console.WriteLine($"image frames: {image.Frames}");
    Console.WriteLine($"image frames count: {image.Frames.Count}");

    for (int i = 0; i < image.Frames.Count; i++)
    {
        Console.WriteLine($"{image.Frames[i]}");


        image.SaveAsPng($"test{i}.png");
    }
}

When I switch to using streams, I assume I would use the same way of loading (since Load is an overloaded function that has a stream variant).

Also, is there a way to convert TIFFs to PDFs instead of PNGs with ImageSharp? PDF is not an image format so is not supported.

Thanks!

[JimBobSquarePants]

PDF (Portable Document Format) is not an image format. As such it is not supported by the library. You would need a PDF library that can import images.

[usagibear]

Thanks! I will update my question.

[JimBobSquarePants]

There's a property on Image and Image<TPixel> called Frames. You can enumerate through that collection and save each frame separately.

[usagibear]

I see. There doesn't appear to be a Save() method for ImageFrames, what method would I use to save each frame?

[JimBobSquarePants]

You need to clone the frame into a new Image via ImageFrameCollection.CloneFrame.

[usagibear]

Works like a charm. Thanks for your help JimBobSquarePants!