Convert HTML to PDF/A and PDF/X Documents

EVO PDF Client for .NET Core

EVO HTML to PDF Converter allows you to convert a HTML to full PDF, PDF/A subset or PDF/X subset. You can choose between these standards using the PdfDocumentOptionsPdfStandardSubset property. An object of PdfDocumentOptions type is exposed by the HtmlToPdfConverterPdfDocumentOptions property.

The PDF/A subset or PDF/X standards impose additional restrictions for the generated PDF document. For example, the PDF/A-1b standard, used for long-term archiving of PDF documents, requires that all the true type fonts used by the document to be embedded in the document, the HTTP links to be disabled, the document to not use transparent objects and the document information properties to be disabled.

Code Sample - Convert HTML to PDF/A and PDF/X Documents

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Http;

// Use EVO PDF Namespace
using EvoPdfClient;

namespace EvoHtmlToPdfDemo.Controllers.HTML_to_PDF.PDF_Standards
{
    public class Create_PDF_A_and_PDF_X_DescriptionController : Controller
    {
        // GET: Create_PDF_A_and_PDF_X_Description
        public ActionResult Index()
        {
            return View();
        }

        [HttpPost]
        public ActionResult ConvertHtmlToPdf(IFormCollection collection)
        {
            // Get the server options
            string serverIP = collection["textBoxServerIP"];
            uint serverPort = uint.Parse(collection["textBoxServerPort"]);
            string servicePassword = collection["textBoxServicePassword"];
            bool useServicePassword = servicePassword.Length > 0;
            bool useTcpService = collection["ServerType"] == "radioButtonUseTcpService";
            string webServiceUrl = collection["textBoxWebServiceUrl"];

            // Create the HTML to PDF converter object
            HtmlToPdfConverter htmlToPdfConverter = null;
            if (useTcpService)
                htmlToPdfConverter = new HtmlToPdfConverter(serverIP, serverPort);
            else
                htmlToPdfConverter = new HtmlToPdfConverter(true, webServiceUrl);

            // Set optional service password
            if (useServicePassword)
                htmlToPdfConverter.ServicePassword = servicePassword;

            // Set license key received after purchase to use the converter in licensed mode
            // Leave it not set to use the converter in demo mode
            htmlToPdfConverter.LicenseKey = "4W9+bn19bn5ue2B+bn1/YH98YHd3d3c=";

            // Set an adddional delay in seconds to wait for JavaScript or AJAX calls after page load completed
            // Set this property to 0 if you don't need to wait for such asynchcronous operations to finish
            htmlToPdfConverter.ConversionDelay = 2;

            // Set the PDF Standard
            // By default the full PDF standard is used
            if (collection["PdfStandard"] == "pdfARadioButton")
                htmlToPdfConverter.PdfDocumentOptions.PdfStandardSubset = PdfStandardSubset.Pdf_A_1b;
            else if (collection["PdfStandard"] == "pdfXRadioButton")
                htmlToPdfConverter.PdfDocumentOptions.PdfStandardSubset = PdfStandardSubset.Pdf_X_1a;

            // Convert the HTML page to a PDF document in a memory buffer
            byte[] outPdfBuffer = htmlToPdfConverter.ConvertUrl(collection["urlTextBox"]);

            // Send the PDF file to browser
            FileResult fileResult = new FileContentResult(outPdfBuffer, "application/pdf");
            fileResult.FileDownloadName = "PDF_A_PDF_X.pdf";

            return fileResult;
        }
    }
}