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DinkToPdf
C# .NET Core wrapper for wkhtmltopdf library that uses Webkit engine to convert HTML pages to PDF.
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WorkOS
The modern identity platform for B2B SaaS. The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.
using Microsoft.Azure.WebJobs; using Microsoft.Azure.WebJobs.Extensions.Http; using Microsoft.Extensions.Logging; using DinkToPdf; using IPdfConverter = DinkToPdf.Contracts.IConverter; using Microsoft.WindowsAzure.Storage; using Microsoft.WindowsAzure.Storage.Blob; using System.Threading.Tasks; namespace Html2Pdf { public class Html2Pdf { // Read more about converter on: https://github.com/rdvojmoc/DinkToPdf // For our purposes we are going to use SynchronizedConverter IPdfConverter pdfConverter = new SynchronizedConverter(new PdfTools()); // A function to convert html content to pdf based on the configuration pased as arguments // Arguments: // HtmlContent: the html content to be converted // Width: the width of the pdf to be created. e.g. "8.5in", "21.59cm" etc. // Height: the height of the pdf to be created. e.g. "11in", "27.94cm" etc. // Margins: the margis around the content // DPI: The dpi is very important when you want to print the pdf. // Returns a byte array of the pdf which can be stored as a file private byte[] BuildPdf(string HtmlContent, string Width, string Height, MarginSettings Margins, int? DPI = 180) { // Call the Convert method of SynchronizedConverter "pdfConverter" return pdfConverter.Convert(new HtmlToPdfDocument() { // Set the html content Objects = { new ObjectSettings { HtmlContent = HtmlContent } }, // Set the configurations GlobalSettings = new GlobalSettings { // PaperKind.A4 can also be used instead of width & height PaperSize = new PechkinPaperSize(Width, Height), DPI = DPI, Margins = Margins } }); } // The name of the function [FunctionName("Html2Pdf")] // The first arugment tells that the functions can be triggerd by a POST HTTP request. // The second argument is mainly used for logging information, warnings or errors public async Task Run([HttpTrigger(AuthorizationLevel.Function, "POST")] Html2PdfRequest Request, ILogger Log) { // PDFByteArray is a byte array of pdf generated from the HtmlContent var PDFByteArray = BuildPdf(Request.HtmlContent, "8.5in", "11in", new MarginSettings(0, 0, 0, 0)); // The connection string of the Storage Account to which our PDF file will be uploaded // The connection string of the Storage Account to which our PDF file will be uploaded var StorageConnectionString = "DefaultEndpointsProtocol=https;AccountName=;AccountKey=;EndpointSuffix=core.windows.net"; // Generate an instance of CloudStorageAccount by parsing the connection string var StorageAccount = CloudStorageAccount.Parse(StorageConnectionString); // Create an instance of CloudBlobClient to connect to our storage account CloudBlobClient BlobClient = StorageAccount.CreateCloudBlobClient(); // Get the instance of CloudBlobContainer which points to a container name "pdf" // Replace your own container name CloudBlobContainer BlobContainer = BlobClient.GetContainerReference("pdf"); // Get the instance of the CloudBlockBlob to which the PDFByteArray will be uploaded CloudBlockBlob Blob = BlobContainer.GetBlockBlobReference(Request.PDFFileName); // Upload the pdf blob await Blob.UploadFromByteArrayAsync(PDFByteArray, 0, PDFByteArray.Length); } } }
We are going to use Azure Functions & wkhtmltopdf tool to generate a PDF file from an HTML file. You might want to create a PDF file for a great many reasons e.g. generate invoices for sales, medical reports for your patients, insurance forms for your clients etc. There are a few ways to do this.