Convert RasterImage to PNG
Sample Code (convert single frame image to PNG):
ConvertHandler.Convert("input.jpeg", @"output.png");
The C# example code below will convert the first page of multi-page TIFF document to PNG image file.
RasterImage img = new RasterImage("input.tiff");
img.Save(@"output.png");
The C# example code below will convert the specified page of multi-page TIFF document to PNG image file.
- Use methdo
MultiPageImageProcess.ExtractPages() to get the specified tiff page or pages into a new RasterImage object
- Save the tiff page to a PNG image file
RasterImage image = new RasterImage("C://input//multi-page-tiff-sample.tiff");
int[] pageIdnex = new int[] { 1 };
RasterImage output = MultiPageImageProcess.ExtractPages(image, pageIdnex);
SaveOption options = new SaveOption();
options.ImageFormat = RasterEdge.XImage.Raster.ImageFormat.PNG;
image.Save("C://output//sample-color-barcode.png", options);
When you convert image to PNG image file using XImage.Raster C# Imaging library, you can customize and apply the following PNG image options
- Filter filtering the data before compression
- Interlaced if save the png file in interlaced format. Turn on it if there is a slow internet connection.
- Level compression level
- Strategy compression strategy
- TransparencyColor pick a color form the image, and make it transparent
- TransparencyMatch colors within this distance are considered equal.
The C# source code below explains how to convert a JPEG image to PNG image with PNG properties applied using XImage.Raster C# image library.
- In the
SaveOption object, specify the output image format in property ImageFormat as RasterEdge.XImage.Raster.ImageFormat.PNG
- Customize the PNG image property settings through
SaveOption.Png
SaveOption options = new SaveOption();
options.ImageFormat = RasterEdge.XImage.Raster.ImageFormat.PNG;
options.Png.Filter = PNGFilter.PAETH;
options.Png.Interlaced = true;
options.Png.Level = PNGCompressLevel.LEVEL9;
RasterImage image = new RasterImage("C://input//sample-color-barcode.jpg");
image.Save("C://output//sample-color-barcode.png", options);
