PDF.co Web API – PDF Optimization API – VB.NET – Optimize PDF From URL

PDF.co Web API – PDF Optimization API – VB.NET – Optimize PDF From URL

Module1.vb

Imports System.IO
Imports System.Net
Imports Newtonsoft.Json.Linq

Module Module1

	' The authentication key (API Key).
	' Get your own by registering at https://app.pdf.co/documentation/api
	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-optimize/sample.pdf"
	' PDF document password. Leave empty for unprotected documents.
	const Password As string = ""
	' Destination PDF file name
	const DestinationFile as string = ".\result.pdf"

	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 `Optimize PDF` API call
		Dim query As String = Uri.EscapeUriString(String.Format(
			"https://api.pdf.co/v1/pdf/optimize?name={0}&password={1}&url={2}",
			Path.GetFileName(DestinationFile),
			Password,
			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 PDF file
				Dim resultFileUrl As String = json("url").ToString()

				' Download PDF file
				webClient.DownloadFile(resultFileUrl, DestinationFile)

				Console.WriteLine("Generated PDF 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

  Click here to get your Free Trial version of the SDK