ByteScout Cloud API Server – PDF To Image API – PowerShell – Convert PDF To PNG From URL Asynchronously

Home
/
Articles
/
ByteScout Cloud API Server – PDF To Image API – PowerShell – Convert PDF To PNG From URL Asynchronously

printable version:
ByteScout-Cloud-API-Server-PowerShell-Convert-PDF-To-PNG-From-URL-Asynchronously.pdf

How to convert PDF to PNG from URL asynchronously for PDF to image API in PowerShell with ByteScout Cloud API Server

Learn in simple ways: How to convert PDF to PNG from URL asynchronously for PDF to image API in PowerShell

The easy to understand coding guides help you check the features without any need to write your own code. ByteScout Cloud API Server was designed to assist PDF to image API in PowerShell. ByteScout Cloud API Server is API server that is ready to use and can be installed and deployed in less than 30 minutes on your own Windows server or server in a cloud. It can save data and files on your local server-based file storage or in Amazon AWS S3 storage. Data is processed solely on the API server and is powered by ByteScout engine, no cloud services or Internet connection is required for data processing..

Want to learn quickly? These fast application programming interfaces of ByteScout Cloud API Server for PowerShell plus the instruction and the code below will help to learn how to convert PDF to PNG from URL asynchronously. For implementation of this functionality, please copy and paste the code below into your app using code editor. Then compile and run your app. You can use these PowerShell sample examples in one or many applications.

Free! Free! Free! ByteScout free trial version is available for FREE download from our website. Programming tutorials along with source code samples are assembled.

On-demand (REST Web API) version:
Web API (on-demand version)

On-premise offline SDK for Windows:
60 Day Free Trial (on-premise)

ConvertPdfToPngFromUrlAsynchronously.ps1

      # Please NOTE: In this sample we're assuming Cloud Api Server is hosted at "https://localhost". 
# If it's not then please replace this with with your hosting url.

# Cloud API asynchronous "PDF To PNG" job example.
# Allows to avoid timeout errors when processing huge or scanned PDF documents.

# Direct URL of source PDF file.
$SourceFileUrl = "https://bytescout-com.s3.amazonaws.com/files/demo-files/cloud-api/pdf-to-image/sample.pdf"
# Comma-separated list of page indices (or ranges) to process. Leave empty for all pages. Example: '0,2-5,7-'.
$Pages = ""
# PDF document password. Leave empty for unprotected documents.
$Password = ""
# (!) Make asynchronous job
$Async = $true


# Prepare URL for `PDF To PNG` API call
$query = "https://localhost/pdf/convert/to/png?password={0}&pages={1}&url={2}&async={3}" -f `
    $Password, $Pages, $SourceFileUrl, $Async
$query = [System.Uri]::EscapeUriString($query)

try {
    # Execute request
    $jsonResponse = Invoke-RestMethod -Method Get  -Uri $query

    if ($jsonResponse.error -eq $false) {
        # Asynchronous job ID
        $jobId = $jsonResponse.jobId
        # URL of generated JSON file available after the job completion; it will contain URLs of result PDF files.
        $resultJsonFileUrl = $jsonResponse.url

        # Check the job status in a loop. 
        do {
            $statusCheckUrl = "https://localhost/job/check?jobid=" + $jobId
            $jsonStatus = Invoke-RestMethod -Method Get  -Uri $statusCheckUrl

            # Display timestamp and status (for demo purposes)
            Write-Host "$(Get-date): $($jsonStatus.status)"

            if ($jsonStatus.status -eq "success") {
                # Download JSON file with URLs of result PDF files
                $jsonPngUrls = Invoke-RestMethod -Method Get -Uri $resultJsonFileUrl

                # Download generated PNG files
                $part = 1;
                foreach ($url in $jsonPngUrls) {
                    $localFileName = ".\page$($part).png"

                    Invoke-WebRequest  -OutFile $localFileName -Uri $url

                    Write-Host "Downloaded `"$($localFileName)`""
                    $part++
                }
                break
            }
            elseif ($jsonStatus.status -eq "working") {
                # Pause for a few seconds
                Start-Sleep -Seconds 3
            }
            else {
                Write-Host $jsonStatus.status
                break
            }
        }
        while ($true)
    }
    else {
        # Display service reported error
        Write-Host $jsonResponse.message
    }
}
catch {
    # Display request error
    Write-Host $_.Exception
}

ON-PREMISE OFFLINE SDK

60 Day Free Trial or Visit ByteScout Cloud API Server Home Page

Explore ByteScout Cloud API Server Documentation

Explore Samples

Sign Up for ByteScout Cloud API Server Online Training

ON-DEMAND REST WEB API

Get Your API Key

Explore Web API Docs

Explore Web API Samples

run.bat

      @echo off

powershell -NoProfile -ExecutionPolicy Bypass -Command "& .\ConvertPdfToPngFromUrlAsynchronously.ps1"
echo Script finished with errorlevel=%errorlevel%

pause