How to Convert HTML to PDF with JavaScript via C++

Overview

Aspose.Cells is a professional solution that allows you to generate PDF files from web pages and raw HTML code in your applications.

This article explains how to convert HTML to PDF. It covers the following topics.

HTML to PDF Conversion in JavaScript

How to convert HTML to PDF? With Aspose.Cells for JavaScript via C++ library, you can easily convert HTML to PDF programmatically with a few lines of code. Aspose.Cells for JavaScript via C++ is capable of building cross-platform applications with the ability to generate, modify, convert, render and print all Excel files.

JavaScript Convert HTML to PDF

The following JavaScript code sample shows how to convert an HTML document to a PDF using Aspose.Cells for JavaScript via C++.

  1. Create an instance of the HtmlLoadOptions class.
  2. Initialize Workbook object.
  3. Save output PDF document by calling Workbook.save() method.
<!DOCTYPE html>
<html>
    <head>
        <title>Aspose.Cells HTML to PDF Example</title>
    </head>
    <body>
        <h1>Convert HTML to PDF using Aspose.Cells</h1>
        <input type="file" id="fileInput" accept=".html,.htm" />
        <button id="runExample">Run Example</button>
        <a id="downloadLink" style="display: none;">Download Result</a>
        <div id="result"></div>
    </body>

    <script src="aspose.cells.js.min.js"></script>
    <script type="text/javascript">
        const { Workbook, SaveFormat, Utils } = AsposeCells;
        
        AsposeCells.onReady({
            license: "/lic/aspose.cells.enc",
            fontPath: "/fonts/",
            fontList: [
                "arial.ttf",
                "NotoSansSC-Regular.ttf"
            ]
        }).then(() => {
            console.log("Aspose.Cells initialized");
        });

        document.getElementById('runExample').addEventListener('click', async () => {
            const fileInput = document.getElementById('fileInput');
            if (!fileInput.files.length) {
                document.getElementById('result').innerHTML = '<p style="color: red;">Please select an HTML file.</p>';
                return;
            }

            const file = fileInput.files[0];
            const arrayBuffer = await file.arrayBuffer();

            // Loads the workbook which contains hidden external links
            const options = new AsposeCells.HtmlLoadOptions(AsposeCells.LoadFormat.Html);
            const workbook = new Workbook(new Uint8Array(arrayBuffer), options);

            // Save as PDF
            const outputData = workbook.save(SaveFormat.Pdf);
            const blob = new Blob([outputData], { type: 'application/pdf' });
            const downloadLink = document.getElementById('downloadLink');
            downloadLink.href = URL.createObjectURL(blob);
            downloadLink.download = 'out.pdf';
            downloadLink.style.display = 'block';
            downloadLink.textContent = 'Download PDF File';

            document.getElementById('result').innerHTML = '<p style="color: green;">PDF generated successfully! Click the download link to get the file.</p>';
        });
    </script>
</html>

Try to convert HTML to PDF online

Aspose.Cells for JavaScript via C++ presents you online free application “HTML to PDF”, where you may try to investigate the functionality and quality it works.

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