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Add Images to Existing PDF - VB.NET

PDF Add Text, Signatures and Images to PDF sample in VB.NET demonstrating ‘Add Images to Existing PDF’

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

Module Module1

    ' The authentication key (API Key).
    ' Get your own by registering at
    Const API_KEY As String = "***********************************"

    ' 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 SourceFileUrl As String = ""

    ' 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 PDF file name
    Const DestinationFile As String = ".\result.pdf"

    ' Image params
    Private Const X1 As Int32 = 400
    Private Const Y1 As Int32 = 20
    Private Const Width1 As Int32 = 119
    Private Const Height1 As Int32 = 32
    Private Const ImageUrl As String = ""

    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)

        ' Set JSON content type
        webClient.Headers.Add("Content-Type", "application/json")

        ' * Add image *
        ' Prepare URL for `PDF Edit` API call
		Dim url As String = ""

        ' Prepare requests params as JSON
        ' See documentation:
        Dim jsonPayload As String = $"{{
    ""name"": ""{Path.GetFileName(DestinationFile)}"",
    ""url"": ""{SourceFileUrl}"",
    ""password"": ""{Password}"",
    ""images"": [
            ""url"": ""{ImageUrl}"",
            ""x"": {X1},
            ""y"": {Y1},
            ""width"": {Width1},
            ""height"": {Height1},
            ""pages"": ""{Pages}""

            ' Execute POST request with JSON payload
            Dim response As String = webClient.UploadString(url, jsonPayload)

            ' 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)

            End If

        Catch ex As WebException
        End Try


        Console.WriteLine("Press any key...")

    End Sub

End Module 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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