Convert tiff image byte array to png image byte array

Convert tiff image byte array to png image byte array

Issue : Convert tiff image byte array to png image byte array.

Tips : To convert tiff image byte array to png image byte array there can be used saving bytes from/to MemoryStream.

Example :

using Aspose.Imaging;
using Aspose.Imaging.FileFormats.Png;
using Aspose.Imaging.FileFormats.Tiff;
using Aspose.Imaging.FileFormats.Tiff.Enums;
using Aspose.Imaging.ImageOptions;
using System.Collections.Generic;
using System.IO;
using System.Linq;

string templatesFolder = @"c:\Users\USER\Downloads\templates\";
string dataDir = templatesFolder;

using (TiffImage image = (TiffImage)Image.Load(dataDir + "template.tiff"))
{
    using (MemoryStream ms = new MemoryStream())
    {
        image.Save(ms);
        byte[] bytes = TiffToPng(ms.ToArray());
    }
}

    byte[] TiffToPng(byte[] tiffBytes)
{
    // create stream from TIFF byte array
    using (var tiffStream = new MemoryStream(tiffBytes))
    {
        // load TIFF image
        using (var tiffImage = Image.Load(tiffStream))
        {
            // create emtpy output stream
            using (var pngStream = new MemoryStream())
            {
                // create and customize PNG options
                var pngOptions = new PngOptions
                {
                    // use PngColorType.TruecolorWithAlpha to get highest image color depth and keep transparency transparency of input image
                    ColorType = PngColorType.TruecolorWithAlpha,
                    // set compression level from 0 to 9 (by default it is set to 6; higher value - less size)
                    CompressionLevel = 9,
                };

                // export TIFF according to specified options
                tiffImage.Save(pngStream, pngOptions);

                // return PNG byte array
                return pngStream.ToArray();
            }
        }
    }
}