How to convert PDF to HTML from URL for PDF to HTML API in VB.NET with PDF.co Web API

How to convert PDF to HTML from URL for PDF to HTML API in VB.NET: How To Tutorial

The sample source codes on this page will demonstrate you how to make PDF to HTML API in VB.NET. PDF.co Web API was made to help with PDF to HTML API in VB.NET. PDF.co Web API is the Rest API that provides set of data extraction functions, tools for documents manipulation, splitting and merging of pdf files. Includes built-in OCR, images recognition, can generate and read barcodes from images, scans and pdf.

VB.NET code snippet like this for PDF.co Web API works best when you need to quickly implement PDF to HTML API in your VB.NET application. Sample code in VB.NET is all you need. Copy-paste it to your the code editor, then add a reference to PDF.co Web API and you are ready to try it! Enjoy writing a code with ready-to-use sample VB.NET codes to add PDF to HTML API functions using PDF.co Web API in VB.NET.

PDF.co Web API – free trial version is on available our website. Also, there are other code samples to help you with your VB.NET application included into trial version.

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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://bytescout-com.s3.amazonaws.com/files/demo-files/cloud-api/pdf-to-html/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 HTML file name const DestinationFile as String = ".\result.html" ' Set to `true` to get simplified HTML without CSS. Default is the rich HTML keeping the document design. const PlainHtml as Boolean = False ' Set to `true` if your document has the column layout like a newspaper. const ColumnLayout as Boolean = False 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 HTML` API call Dim query As String = Uri.EscapeUriString(String.Format( "https://api.pdf.co/v1/pdf/convert/to/html?name={0}&password={1}&pages={2}&simple={3}&columns={4}&url={5}", Path.GetFileName(DestinationFile), Password, Pages, PlainHtml, ColumnLayout, 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 HTML file Dim resultFileUrl As String = json("url").ToString() ' Download HTML file webClient.DownloadFile(resultFileUrl, DestinationFile) Console.WriteLine("Generated HTML 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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packages.config
      
<?xml version="1.0" encoding="utf-8"?> <packages> <package id="Newtonsoft.Json" version="10.0.3" targetFramework="net40" /> </packages>

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