PngWriter
public static class PngWriterFast PNG encoding for label images: grayscale (8 bit) for anti-aliased black-on-white output and true 1-bit PNGs for pure black/white output, instead of 32-bit RGBA.
Methods
| Method Signature | Returns | Description |
|---|---|---|
static # Grayscale(SKBitmap bitmap, PngCompression compression = PngCompression.Optimal) | byte[] | 8-bit grayscale PNG via Skia (Sub filter — fastest for label content). |
static # Monochrome(SKBitmap bitmap, PngCompression compression = PngCompression.Optimal) | byte[] | 1-bit PNG (black = luminance < 128). For non-anti-aliased label images. |