Convert HTML Invoice to PDF – Aspose.HTML Cloud

This guide provides detailed instructions on how to convert HTML invoices directly into PDF documents using Aspose.HTML Cloud. Converting invoices from HTML to PDF is ideal for generating professional, printable documents suitable for accounting, billing, and record-keeping purposes.

Before starting, ensure you have obtained an authorization token. See the Authorization Guide for detailed instructions.

HTML Invoice Example

Here’s an example of a typical HTML invoice structure that can be converted to PDF:

 1<html>
 2  <body style="font-family: Arial;">
 3    <h1>Invoice #12345</h1>
 4    <p>Date: April 1, 2025</p>
 5    <table border="1" cellpadding="10">
 6      <tr>
 7        <th>Item</th>
 8        <th>Quantity</th>
 9        <th>Price</th>
10        <th>Total</th>
11      </tr>
12      <tr>
13        <td>Service A</td>
14        <td>2</td>
15        <td>$50</td>
16        <td>$100</td>
17      </tr>
18      <tr>
19        <td>Product B</td>
20        <td>1</td>
21        <td>$150</td>
22        <td>$150</td>
23      </tr>
24      <tr>
25        <td colspan="3"><strong>Total Due</strong></td>
26        <td><strong>$250</strong></td>
27      </tr>
28    </table>
29  </body>
30</html>

API Request for Invoice Conversion

Endpoint: POST https://api.aspose.cloud/v4.0/html/conversion/html-pdf/sync

Request Body:

1{
2  "InputContent": "YOUR_GENERATED_HTML_INVOICE_CONTENT"
3}

Implementation Examples

Below are detailed examples in C# and JavaScript demonstrating how to convert HTML invoices into PDF documents:

 1using System;
 2using System.IO;
 3using System.Net.Http;
 4using System.Net.Http.Headers;
 5using System.Text;
 6using System.Threading.Tasks;
 7using Newtonsoft.Json;
 8
 9public class ConversionRequest
10{
11    public string InputContent { get; set; }
12}
13
14public async Task ConvertInvoiceHtmlToPdf(string htmlInvoice)
15{
16    string apiUrl = "https://api.aspose.cloud/v4.0/html/conversion/html-pdf/sync";
17    string outputFilePath = @"C:\\temp\\invoice.pdf";
18
19    using var client = new HttpClient();
20    client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", "YOUR_ACCESS_TOKEN");
21
22    var requestBody = new ConversionRequest { InputContent = htmlInvoice };
23    string jsonRequest = JsonConvert.SerializeObject(requestBody);
24    HttpContent content = new StringContent(jsonRequest, Encoding.UTF8, "application/json");
25
26    var response = await client.PostAsync(apiUrl, content);
27
28    if (!response.IsSuccessStatusCode)
29    {
30        var error = await response.Content.ReadAsStringAsync();
31        throw new Exception($"Conversion failed: {response.StatusCode} - {error}");
32    }
33
34    var pdfBytes = await response.Content.ReadAsByteArrayAsync();
35    await File.WriteAllBytesAsync(outputFilePath, pdfBytes);
36
37    Console.WriteLine($"Invoice PDF saved to {outputFilePath}");
38}

JavaScript

 1async function convertInvoiceHtmlToPdf(htmlInvoice) {
 2    const url = "https://api.aspose.cloud/v4.0/html/conversion/html-pdf/sync";
 3
 4    const requestBody = JSON.stringify({ "InputContent": htmlInvoice });
 5
 6    const response = await fetch(url, {
 7        method: 'POST',
 8        headers: {
 9            'Authorization': 'Bearer YOUR_ACCESS_TOKEN',
10            'Content-Type': 'application/json'
11        },
12        body: requestBody
13    });
14
15    if (!response.ok) {
16        const errorText = await response.text();
17        throw new Error(`Conversion failed: ${response.status} - ${errorText}`);
18    }
19
20    const blob = await response.blob();
21    const downloadLink = document.createElement('a');
22    downloadLink.href = URL.createObjectURL(blob);
23    downloadLink.download = 'invoice.pdf';
24    downloadLink.click();
25
26    console.log("Invoice PDF downloaded successfully.");
27}

Convert HTML Invoice to PDF – Aspose.HTML Cloud

HTML Invoice Example

API Request for Invoice Conversion

Implementation Examples

See Also