Advanced Conversion Options | C# | PDF To Text APIByteScout PDF Extractor SDK

Advanced Conversion Options | C# | PDF To Text API

Program.cs:

C#
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/documentation/api
        const String API_KEY = "***********************************";

        // Direct URL of source PDF file.
        const string SourceFileUrl = "https://bytescout-com.s3.amazonaws.com/files/demo-files/cloud-api/pdf-to-text/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 = "";
        // Destination TXT file name
        const string DestinationFile = @".\result.txt";

        /*
        Some of advanced options available through profiles:
        (JSON can be single/double-quoted and contain comments.)
        {
            "profiles": [
                {
                    "profile1": {                
                        "ExtractInvisibleText": true, // Invisible text extraction. Values: true / false
                        "ExtractShadowLikeText": true, // Shadow-like text extraction. Values: true / false
                        "ExtractAnnotations": true, // Whether to extract PDF annotations.
                        "CheckPermissions": true, // Ignore document permissions. Values: true / false
                        "DetectNewColumnBySpacesRatio": 1.2, // A ratio affecting number of spaces between words. 
                    }
                }
            ]
        }
        */

        // Sample profile that sets advanced conversion options
        // Advanced options are properties of TextExtractor class from ByteScout Text Extractor SDK used in the back-end:
        // https://cdn.bytescout.com/help/BytescoutPDFExtractorSDK/html/8a2bae5a-346f-8338-b5aa-6f3522dca0d4.htm
        static string Profiles = File.ReadAllText("profile.json");


        static void Main(string[] args)
        {
            // Create standard .NET web client instance
            WebClient webClient = new WebClient();

            // Set API Key
            webClient.Headers.Add("x-api-key", API_KEY);

            // URL for `PDF To TXT` API call
            string url = "https://api.pdf.co/v1/pdf/convert/to/text";

            // Prepare requests params as JSON
            Dictionary<string, object> parameters = new Dictionary<string, object>();
            parameters.Add("name", Path.GetFileName(DestinationFile));
            parameters.Add("password", Password);
            parameters.Add("pages", Pages);
            parameters.Add("url", SourceFileUrl);
            parameters.Add("profiles", Profiles);

            // Convert dictionary of params to JSON
            string jsonPayload = JsonConvert.SerializeObject(parameters);

            try
            {
                // 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 TXT file
                    string resultFileUrl = json["url"].ToString();

                    // Download TXT file
                    webClient.DownloadFile(resultFileUrl, DestinationFile);

                    Console.WriteLine("Generated TXT file 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...");
            Console.ReadKey();
        }
    }
}