Merge PDF to PNG via C++
Merge PDF documents into single formats PNG. Use Aspose.PDF for C++ to modify files programmatically
Merge PDF to PNG Using C++
How to merge PDF to PNG? With Aspose.PDF for C++ library you can easily merge PDF to PNG programmatically. PDF software from Aspose is ideal for individuals, and small or large businesses. Since it is able to process a large amount of information, perform the concatenation quickly and efficiently and protect your data. A peculiar feature from Aspose.PDF is an API for merging PDF to PNG.
Open NuGet package manager, search for Aspose.PDF and install. Check the details of Installing the Library on the Documentation pages. To verify the benefits of the library, try using the conversion PDF to PNG code snippet.
Package Manager Console
PM > Install-Package Aspose.PDF.CppHow to merge PDF to PNG via C++
C++ developers can easily load & merge PDF files to PNG in just a few lines of code.
- Initialize a new Document, and run a loop for merging files
- In loop: add a new page to PNG document
- In loop: add PDF file to new page
- After the loop save the result
Here is an example that demonstrates how to merge PDF to PNG in C++. Combine multiple documents into a single file with ease. If you are developing code in C++, this task can be simpler than it sounds. You can use fully qualified filenames for both PDF reading and PNG writing. Check out this C++ example that show how to merge multiple documents of either the same or different file types into one file using C++
Merge PDF files using C++ and save as PNG
Example C++: this sample code shows PDF to PNG concatenation
Input file:
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Output format:
Output file:
// Create blank image with calculated width and height
newImage = new System::Drawing::Bitmap(newWidth, newHeight);
canvas = System::Drawing::Graphics::FromImage(newImage);
canvas->set_InterpolationMode(System::Drawing::Drawing2D::InterpolationMode::HighQualityBicubic);
int stitchedWidth = 0;
// read pdf file to Aspose Document
doc = MakeObject<Document>(u"1.pdf");
// setup default resolution to pdf documents 72dpi
// create image device to save document as image with page dimensions and resolution
// process document page to image
// load image from file, it supports a lot of formats
for (auto const& page : doc->get_Pages()) {
imageDevice = MakeObject<Devices::PngDevice>(
page->get_PageInfo()->get_Width(),
page->get_PageInfo()->get_Height(),
MakeObject<Devices::Resolution>(72));
String outPath = String::Format(u"{0}_test.png", pageCount);
stream = System::IO::File::Create(outPath);
imageDevice->Process(page, stream);
image = System::Drawing::Image::FromFile(fs);
canvas->DrawImage(image, stitchedWidth, 0);
stitchedWidth += image->get_Width();
}
// save created image to disk
canvas->Save();
newImage->Save(u"Merger_pdf_png.png", System::Drawing::Imaging::ImageFormat::get_Png());