The code to merge image in C++

High-speed C++ library to merge image into one

This is a professional solution to combine image using C++. Use C++ to obtain maximum image merge speed. Try it online for free!

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Convert images in C++

C++ library allows C++ developers to convert images easily. Image conversion engine analyses the original content, then exports the combined graphical content to the required format.

Image conversion may be tricky, unless you have a professional tool to do the job. Use C++ to convert images with maximum flexibility and speed. Run online live demo and check the highest image quality right in a browser. Image Conversion API supports a bunch of useful options.

Merge images in C++

Enhance image format capabilities with Aspose.Words for C++. This is a simple way to combine images with C++ library that handles all low-level details.

Merge images and save the result as a single file. If you develop code in C++, this will be simpler than it sounds. See C++ example that iterates through images and combines them:

Code example in C++ to merge PNG files
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using namespace Aspose::Words;

std::vector<String> fileNames { u"Input1.png", u"Input2.png" };

auto doc = MakeObject<Document>();
auto builder = MakeObject<DocumentBuilder>(doc);

std::vector<SharedPtr<Shape>> shapes;
for (const auto& fileName : fileNames)
{
    auto shape = builder->InsertImage(fileName);
    shapes.push_back(shape);
}

// Calculate the maximum width and height and update page settings 
// to crop the document to fit the size of the pictures.
auto maxWidth = *std::max_element(shapes.begin(), shapes.end(),
    [](auto lhs, auto rhs)  return lhs->get_Width() < rhs->get_Width(); );
double maxHeight =
    std::accumulate(shapes.begin(), shapes.end(), 1.0,
        [](double result, auto shape)  return result + shape->get_Height(); );

auto pageSetup = builder->get_PageSetup();
pageSetup->set_PageWidth(maxWidth->get_Width());
pageSetup->set_PageHeight(maxHeight);
pageSetup->set_TopMargin(0);
pageSetup->set_LeftMargin(0);
pageSetup->set_BottomMargin(0);
pageSetup->set_RightMargin(0);

doc->Save(u"Output.png");
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How to merge image C++

  1. Install Aspose.Words for C++.
  2. Add a library reference (import the library) to your C++ project.
  3. Open the source image file in C++.
  4. Combine image files in a few seconds.
  5. Call the AppendDocument() method, passing an output filename with required extension.
  6. Get the result of merging image as a single file.

C++ library to merge image files

There are three options to install Aspose.Words for C++ to your developer environment. Please choose one that resembles your needs and follow the step-by-step instructions:

System Requirements

You can use this C++ library to develop software on Microsoft Windows, Linux and macOS operating systems:

  • GCC >= 6.3.0 and Clang >= 3.9.1 are required for Linux
  • Xcode >= 12.5.1, Clang and libc++ are required for macOS

If you develop software for Linux or macOS, please check information on additional library dependencies (fontconfig and mesa-glu open-source packages) in Product Documentation.

Other Supported image Merge operations

You can merge image to many other file formats:

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