ByteScout Cloud API Server - PDF To Image API - C# - Convert PDF To PNG From Uploaded File - ByteScout
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ByteScout Cloud API Server – PDF To Image API – C# – Convert PDF To PNG From Uploaded File

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How to convert PDF to PNG from uploaded file for PDF to image API in C# with ByteScout Cloud API Server

Step By Step Instructions on how to convert PDF to PNG from uploaded file for PDF to image API in C#

The sample source codes on this page will show you how to create PDF to image API in C#. ByteScout Cloud API Server was designed to assist PDF to image API in C#. ByteScout Cloud API Server is the ready to deploy Web API Server that can be deployed in less than thirty minutes into your own in-house Windows server (no Internet connnection is required to process data!) or into private cloud server. Can store data on in-house local server based storage or in Amazon AWS S3 bucket. Processing data solely on the server using built-in ByteScout powered engine, no cloud services are used to process your data!.

The SDK samples displayed below below explain how to quickly make your application do PDF to image API in C# with the help of ByteScout Cloud API Server. For implementation of this functionality, please copy and paste the code below into your app using code editor. Then compile and run your app. Check C# sample code examples to see if they respond to your needs and requirements for the project.

ByteScout Cloud API Server – free trial version is available on our website. Also, there are other code samples to help you with your C# application included into trial version.

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Program.cs
      
using System; using System.IO; using System.Net; using Newtonsoft.Json.Linq; // Please NOTE: In this sample we're assuming Cloud Api Server is hosted at "https://localhost". // If it's not then please replace this with with your hosting url. namespace ByteScoutWebApiExample { class Program { // Source PDF file const string SourceFile = @".\sample.pdf"; // Comma-separated list of page indices (or ranges) to process. Leave empty for all pages. Example: '0,2-5,7-'. const string Pages = ""; // PDF document password. Leave empty for unprotected documents. const string Password = ""; static void Main(string[] args) { // Create standard .NET web client instance WebClient webClient = new WebClient(); // 1. RETRIEVE THE PRESIGNED URL TO UPLOAD THE FILE. // * If you already have a direct file URL, skip to the step 3. // Prepare URL for `Get Presigned URL` API call string query = Uri.EscapeUriString(string.Format( "https://localhost/file/upload/get-presigned-url?contenttype=application/octet-stream&name={0}", Path.GetFileName(SourceFile))); try { // Execute request string response = webClient.DownloadString(query); // Parse JSON response JObject json = JObject.Parse(response); if (json["error"].ToObject<bool>() == false) { // Get URL to use for the file upload string uploadUrl = json["presignedUrl"].ToString(); // Get URL of uploaded file to use with later API calls string uploadedFileUrl = json["url"].ToString(); // 2. UPLOAD THE FILE TO CLOUD. webClient.Headers.Add("content-type", "application/octet-stream"); webClient.UploadFile(uploadUrl, "PUT", SourceFile); // You can use UploadData() instead if your file is byte[] or Stream // 3. CONVERT UPLOADED PDF FILE TO PNG // Prepare URL for `PDF To PNG` API call query = Uri.EscapeUriString(string.Format( "https://localhost/pdf/convert/to/png?password={0}&pages={1}&url={2}", Password, Pages, uploadedFileUrl)); // Execute request response = webClient.DownloadString(query); // Parse JSON response json = JObject.Parse(response); if (json["error"].ToObject<bool>() == false) { // Download generated PNG files int page = 1; foreach (JToken token in json["urls"]) { string resultFileUrl = token.ToString(); string localFileName = String.Format(@".\page{0}.png", page); webClient.DownloadFile(resultFileUrl, localFileName); Console.WriteLine("Downloaded \"{0}\".", localFileName); page++; } } else { Console.WriteLine(json["message"].ToString()); } } else { Console.WriteLine(json["message"].ToString()); } } catch (WebException e) { Console.WriteLine(e.ToString()); } webClient.Dispose(); Console.WriteLine(); Console.WriteLine("Press any key..."); Console.ReadKey(); } } }

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packages.config
      
<?xml version="1.0" encoding="utf-8"?> <packages> <package id="Newtonsoft.Json" version="10.0.3" targetFramework="net40" /> </packages>

ON-PREMISE OFFLINE SDK

60 Day Free Trial or Visit ByteScout Cloud API Server Home Page

Explore ByteScout Cloud API Server Documentation

Explore Samples

Sign Up for ByteScout Cloud API Server Online Training

ON-DEMAND REST WEB API

Get Your API Key

Explore Web API Docs

Explore Web API Samples

VIDEO

ON-PREMISE OFFLINE SDK

60 Day Free Trial or Visit ByteScout Cloud API Server Home Page

Explore ByteScout Cloud API Server Documentation

Explore Samples

Sign Up for ByteScout Cloud API Server Online Training

ON-DEMAND REST WEB API

Get Your API Key

Explore Web API Docs

Explore Web API Samples

Tutorials:

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