Generate PDF From HTML File - C#
PDF from HTML (HTML to PDF) sample in C# demonstrating ‘Generate PDF From HTML File’
Program.cs
using System;
using System.Collections.Generic;
using System.IO;
using System.Net;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
namespace ByteScoutWebApiExample
{
class Program
{
// The authentication key (API Key).
// Get your own by registering at https://app.pdf.co
const String API_KEY = "******************************";
static void Main(string[] args)
{
// HTML input
string inputSample = File.ReadAllText(@".\sample.html");
// Destination PDF file name
string destinationFile = @".\result.pdf";
// Create standard .NET web client instance
WebClient webClient = new WebClient();
// Set API Key
webClient.Headers.Add("x-api-key", API_KEY);
// Set JSON content type
webClient.Headers.Add("Content-Type", "application/json");
try
{
// Prepare requests params as JSON
// See documentation: https://apidocs.pdf.co/?#1-json-pdfconvertfromhtml
Dictionary<string, object> parameters = new Dictionary<string, object>();
// Input HTML code to be converted. Required.
parameters.Add("html", inputSample);
// Name of resulting file
parameters.Add("name", Path.GetFileName(destinationFile));
// Set to css style margins like 10 px or 5px 5px 5px 5px.
parameters.Add("margins", "5px 5px 5px 5px");
// Can be Letter, A4, A5, A6 or custom size like 200x200
parameters.Add("paperSize", "Letter");
// Set to Portrait or Landscape. Portrait by default.
parameters.Add("orientation", "Portrait");
// true by default. Set to false to disbale printing of background.
parameters.Add("printBackground", true);
// If large input document, process in async mode by passing true
parameters.Add("async", false);
// Set to HTML for header to be applied on every page at the header.
parameters.Add("header", "");
// Set to HTML for footer to be applied on every page at the bottom.
parameters.Add("footer", "");
// Convert dictionary of params to JSON
string jsonPayload = JsonConvert.SerializeObject(parameters);
// Prepare URL for `HTML to PDF` API call
string url = "https://api.pdf.co/v1/pdf/convert/from/html";
// Execute POST request with JSON payload
string response = webClient.UploadString(url, jsonPayload);
// Parse JSON response
JObject json = JObject.Parse(response);
if (json["error"].ToObject<bool>() == false)
{
// Get URL of generated PDF file
string resultFileUrl = json["url"].ToString();
webClient.Headers.Remove("Content-Type"); // remove the header required for only the previous request
// Download the PDF file
webClient.DownloadFile(resultFileUrl, destinationFile);
Console.WriteLine("Generated PDF document saved as \"{0}\" file.", destinationFile);
}
else
{
Console.WriteLine(json["message"].ToString());
}
}
catch (WebException e)
{
Console.WriteLine(e.ToString());
}
webClient.Dispose();
Console.WriteLine();
Console.WriteLine("Press any key to exit...");
Console.ReadKey();
}
}
}
sample.html
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml" lang="" xml:lang="">
<head>
<title>TODO List</title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
</head>
<body>
<h1>TODO List</h1>
<ul>
<li>
Wash the car
</li>
<li>
Do the dishes
</li>
<li>
Walk the dog
</li>
<li>
Buy A4 papers
</li>
</ul>
</body>
</html>
PDF.co Web API: the Web API with a set of tools for documents manipulation, data conversion, data extraction, splitting and merging of documents. Includes image recognition, built-in OCR, barcode generation and barcode decoders to decode bar codes from scans, pictures and pdf.