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Advanced Conversion Options - C#

PDF Make Text Searchable or Unsearchable sample in C# demonstrating ‘Advanced Conversion Options’

using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using System;
using System.Collections.Generic;
using System.IO;
using System.Net;

namespace ByteScoutWebApiExample
    class Program
        // The authentication key (API Key).
        // Get your own by registering at
        const String API_KEY = "***********************************";

        // Direct URL of source PDF file.
        // You can also upload your own file into and use it as url. Check "Upload File" samples for code snippets:
        const string SourceFileUrl = "";
        // 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 PDF file name
        const string DestinationFile = @".\result.pdf";

        // Sample profile that sets advanced conversion options
        // Advanced options are properties of SearchablePDFMaker class from ByteScout PDF Extractor SDK used in the back-end:
        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 `Make Searchable PDF` API call
            string url = Uri.EscapeUriString(string.Format(

            // 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);

                // 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();

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

                    Console.WriteLine("Generated PDF file saved as \"{0}\" file.", DestinationFile);
            catch (WebException e)


            Console.WriteLine("Press any key...");
  "profiles": [
      "profile1": {
        "OCRLanguage": "eng",
        "OCRResolution":  300
} 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.

Get your API key here!

Download Source Code (.zip)

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