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Free online XLTM to PNG conversion via c++

Use free online app or C++ SDK to convert between XLTM & PNG as well as several popular formats from Microsoft® Excel.

C++ Code for Converting XLTM to PNG 

// Converting to XLTM using Aspose.Cells
std::shared_ptr<requests::ConvertRequest> request(new requests::ConvertRequest(
    std::make_shared< std::wstring >("HTML") ,        
    requestFile,nullptr,nullptr,nullptr));
auto actual = getApi()->convert(request);
if(actual->good()){
    std::ofstream out("TestConvertFile_CPP.XLTM", std::istream::binary);
    actual->seekg(0,std::ios_base::beg);
    while(!actual->eof()){
        char* buffer = new char[256];
        actual->read(buffer,256);
        out.write(buffer,256);
    }
}
%!(EXTRA string=HTML)
    // Converting to HTML using Aspose.Cells
std::shared_ptr<requests::ConvertRequest> request(new requests::ConvertRequest(
    std::make_shared< std::wstring >("PNG") ,        
    requestFile,nullptr,nullptr,nullptr));
auto actual = getApi()->convert(request);
if(actual->good()){
    std::ofstream out("TestConvertFile_CPP.HTML", std::istream::binary);
    actual->seekg(0,std::ios_base::beg);
    while(!actual->eof()){
        char* buffer = new char[256];
        actual->read(buffer,256);
        out.write(buffer,256);
    }
}
%!(EXTRA string=PNG)

How to convert XLTM to PNG online in Cloud Apps

  1. Initialize WordsApi and CellsApi with Client Id, Client Secret, Base URL & API version
  2. Set ConvertDocumentRequest with parameters local file name and format as HTML
  3. Call WordsApi convertDocument to convert XLTM document to HTML
  4. Initialize SaveOption from CellsAPI with parameters SaveFormat as PNG
  5. Call cellsSaveAsPostDocumentSaveAs method to convert XLTM file to PNG

Get Started with Aspose.Total REST APIs

  1. Create an account at Dashboard to get free API quota & authorization details
  2. Get Aspose.Words and Aspose.Cells Cloud SDKs for C++ source code from Aspose.Words GitHub and Aspose.Cells GitHub repos to compile/use the SDK yourself or head to the Releases for alternative download options.
  3. Also have a look at Swagger-based API Reference for Aspose.Words and Aspose.Cells to know more about the REST API.

How to Convert Excel XLTM to other formats online

You can use Aspose.Cells to transform XLTM files into HTML format. Then, you can input the HTML files to any of the APIs in Aspose.Total, such as Aspose.Words, Aspose.PDF, Aspose.Email, Aspose.Slides, Aspose.Diagram, Aspose.Tasks, Aspose.3D, Aspose.HTML. This will allow you to output the files in hundred of different formats.

To see the full list of supported formats, please check the Aspose.Total Cloud page.

How to convert MS Excel XLTM to Image formats

Aspose.Cells Cloud SDK produces few quick and easy ways to convert MS Excel files to various image formats similar to what we have done above for PNG: by direct REST API calls or using SDKs. There are multiple image formats accessible for converting Excel sheets with Aspose.Cells Cloud APIs - JPEG, PNG, BMP, GIF, and TIFF.

  1. Create SaveOption object and set desire format using SaveFormat property.
  2. Create ConvertDocumentRequest object to convert XLTM document
  3. Call SaveAsPostDocument method of CellsApi class instance for conversion from XLTM

How to Convert XLTM to PDF online

For XLTM to PDF, you need to go to the web page XLTM to PDF and upload the XLTM file from your device. Then, you need to click on the “Convert” button and wait for the conversion to finish. After that, you can download the PDF file to your device.

How to Convert Webpage to PNG format

For Webpage to PNG format conversion, you need to go to the website Webpage to PNG and enter the URL of the webpage you want to convert in the input box. Then, you need to click on the “Convert” button and wait for the conversion to finish. After that, you can download the PNG file to your device.

FAQ

  • What is XLTM Format?
    The XLTM file extension represents files that are generated by Microsoft Excel as Macro-enabled template files. XLTM files are similar to XLTX in structure other than that the later doesn&rsquo;t support creating template files with macros. Such template files are used to generate and set the layout, formatting, and other settings along with the macros to facilitate creating similar XLSX files then.
  • What is PNG Format?
    PNG, Portable Network Graphics, refers to a type of raster image file format that use loseless compression. This file format was created as a replacement of Graphics Interchange Format (GIF) and has no copyright limitations. However, PNG file format does not support animations. PNG file format supports loseless image compression that makes it popular among its users. With the passage of time, PNG has evolved as one of the mostly used image file format.
  • How can I get started with Aspose.Total REST APIs?
    Quickstart not only guides through the initialization of Aspose.Total Cloud API, it also helps in installing the required libraries.
  • Where can I see the release notes for Aspose.Total Cloud API?
    Complete release notes can be reviewed at Aspose.Total Cloud Documentation.
  • Is it safe to convert XLTM to PNG in the Cloud?
    Of course! Aspose Cloud uses Amazon EC2 cloud servers that guarantee the security and resilience of the service. Please read more about Aspose's Security Practices.
  • What file formats are supported by Aspose.Total Cloud API?
    Aspose.Total Cloud can convert file formats from any product family to any other product family to PDF, DOCX, XPS, image(TIFF, JPEG, PNG BMP), MD and more. Checkout the complete list of supported file formats.
  • I can not find the SDK for my favorite language. What should I do?
    Aspose.Total Cloud is also available as a Docker Container. Try using it with cURL in case your required SDK is not available yet.