Open TIFF image: SixLabors.ImageSharp.UnknownImageFormatException

[kirillezhov]

Hi @ststeiger ! Help me please! When i try to open TIFF image i get exception: SixLabors.ImageSharp.UnknownImageFormatException

Exception:

SixLabors.ImageSharp.UnknownImageFormatException: Image cannot be loaded. Available decoders:\r\n - PNG : PngDecoder\r\n - BMP : BmpDecoder\r\n - TGA : TgaDecoder\r\n - GIF : GifDecoder\r\n - JPEG : JpegDecoder\r\n\r\n at SixLabors.ImageSharp.Image.Load[TPixel](Configuration configuration, Stream stream, IImageFormat& format)\r\n at SixLabors.ImageSharp.Image.Load[TPixel](Stream stream, IImageFormat& format)\r\n at PdfSharpCore.Utils.ImageSharpImageSource1.FromStreamImpl(String name, Func1 imageStream, Nullable1 quality)\r\n at MigraDocCore.DocumentObjectModel.MigraDoc.DocumentObjectModel.Shapes.ImageSource.FromStream(String name, Func1 imageStream, Nullable1 quality)\r\n at PdfSharpCore.Drawing.XImage..ctor(Func1 stream)\r\n at PdfSharpCore.Drawing.XImage.FromStream(Func`1 stream)\r\n at PdfConverter.Core.Services.ImgConverter.Convert(Byte[] content)

            using (var imageStream = new MemoryStream(content))
            using (var pdfStream = new MemoryStream())
            {
                var doc = new PdfDocument();
                XImage image = XImage.FromStream(() => imageStream); // -->throw Exception
                PdfPage page = doc.AddPage();
                XGraphics xGraphics = XGraphics.FromPdfPage(page);

                page.Width = image.PixelWidth;
                page.Height = image.PixelHeight;
                
                xGraphics.DrawImage(image, 0, 0, image.PixelWidth, image.PixelHeight);
                doc.Save(pdfStream, false);

                var resultBase64 = System.Convert.ToBase64String(pdfStream.ToArray());

                stopwatch.Stop();
                
                result = new Result()
                {
                    ConvertedDocument = resultBase64,
                    PagesCount = doc.PageCount,
                    ServerTiming = stopwatch.ElapsedMilliseconds,
                };
            }

[ststeiger]

I think ImageSharp doesn't support TIFF. See https://github.com/SixLabors/ImageSharp/issues/12

There's a TIFF-encoder and decoder for ImageSharp : https://github.com/ChrisVanDijk/ImageSharp-Tiff

[kirillezhov]

I think ImageSharp doesn't support TIFF. See SixLabors/ImageSharp#12

There's a TIFF-encoder and decoder for ImageSharp : https://github.com/ChrisVanDijk/ImageSharp-Tiff

thx. you helped me a lot

[smolattack]

I think ImageSharp doesn't support TIFF. See SixLabors/ImageSharp#12

There's a TIFF-encoder and decoder for ImageSharp : https://github.com/ChrisVanDijk/ImageSharp-Tiff

Apparently ImageSharp now has support for Tiff images according to that issue but I still get the same exception as OP. PdfSharpCore 1.3.13