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Module1.vb
Imports System.IO Imports System.Net Imports Newtonsoft.Json.Linq Module Module1 ' (!) If you are getting '(403) Forbidden' error please ensure you have set the correct API_KEY ' The authentication key (API Key). ' Get your own by registering at https://secure.bytescout.com/users/sign_up Const API_KEY As String = "***********************************" ' Direct URL of source PDF file. Const SourceFileUrl As String = "https://s3-us-west-2.amazonaws.com/bytescout-com/files/demo-files/cloud-api/pdf-to-json/sample.pdf" ' Comma-separated list of page indices (or ranges) to process. Leave empty for all pages. Example: '0,2-5,7-'. const Pages as String = "" ' PDF document password. Leave empty for unprotected documents. const Password As string = "" ' Destination JSON file name const DestinationFile as string = ".\result.json" Sub Main() ' Create standard .NET web client instance Dim webClient As WebClient = New WebClient() ' Set API Key webClient.Headers.Add("x-api-key", API_KEY) ' Prepare URL for `PDF To JSON` API call Dim query As String = Uri.EscapeUriString(String.Format( "https://bytescout.io/v1/pdf/convert/to/json?name={0}&password={1}&pages={2}&url={3}", Path.GetFileName(DestinationFile), Password, Pages, SourceFileUrl)) Try ' Execute request Dim response As String = webClient.DownloadString(query) ' Parse JSON response Dim json As JObject = JObject.Parse(response) If json("error").ToObject(Of Boolean) = False Then ' Get URL of generated JSON file Dim resultFileUrl As String = json("url").ToString() ' Download JSON file webClient.DownloadFile(resultFileUrl, DestinationFile) Console.WriteLine("Generated JSON file saved as ""{0}"" file.", DestinationFile) Else Console.WriteLine(json("message").ToString()) End If Catch ex As WebException Console.WriteLine(ex.ToString()) End Try webClient.Dispose() Console.WriteLine() Console.WriteLine("Press any key...") Console.ReadKey() End Sub End Module
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IMPORTANT:
Cloud API is now www.PDF.co
See also: on-premise self-hosted Web API:
Cloud API Server