How to use customized “Logo Image” preset to add a logo from png to a photo file using Bytescout.Watermarking SDK for .NET

Download source code: (240 KB)

Input image:

sample input image

Output image:

output image (customized logo image preset)

using System;
using System.Diagnostics;
using System.Drawing;
using System.Collections.Generic;
using Bytescout.Watermarking;
using Bytescout.Watermarking.Presets;

namespace Sample
class Program
static void Main(string[] args)
// Create Watermarker instance
Watermarker waterMarker = new Watermarker();

// Initialize library
waterMarker.InitLibrary(“demo”, “demo”);

// Set input file name
string inputFilePath = “my_sample_image.jpg”;
// Set output file title
string outputFilePath = “my_sample_output.jpg”;

// Add image to apply watermarks to
waterMarker.AddInputFile(inputFilePath, outputFilePath);

// Create new watermark
LogoImage preset = new LogoImage();

// Select image file
preset.ImageFile = “mylogo.png”;

// Set text transparency
preset.Transparency = 40;

// Set watermark placement
preset.Placement = WatermarkPlacement.MiddleCenter;

// Set scale
preset.Scale = 2.0f;

// Add watermark to watermarker

// Set output directory
waterMarker.OutputOptions.OutputDirectory = “.”;

// Set output format
waterMarker.OutputOptions.ImageFormat = OutputFormats.JPEG;

// Apply watermarks

// open generated image file in default image viewer installed in Windows

Download source code: (240 KB)