How to convert images to PDF from uploaded files for image to PDF API in PowerShell using PDF.co Web API

How to convert images to PDF from uploaded files for image to PDF API in PowerShell: Step By Step Tutorial

The coding tutorials are designed to help you test the features without need to write your own code. PDF.co Web API helps with image to PDF API in PowerShell. PDF.co Web API is 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.

Fast application programming interfaces of PDF.co Web API for PowerShell plus the instruction and the code below will help to learn how to convert images to PDF from uploaded files. Open your PowerShell project and simply copy & paste the code and then run your app! Tutorials are available along with installed PDF.co Web API if you’d like to dive deeper into the topic and the details of the API.

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

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ConvertImagesToPdfFromUploadedFiles.ps1

      
# The authentication key (API Key).
# Get your own by registering at https://app.pdf.co/documentation/api
$API_KEY = "***********************************"

# Source image files
$ImageFiles = ".\image1.png", ".\image2.jpg"
# Destination PDF file name
$DestinationFile = ".\result.pdf"

$uploadedFiles = @()

try {
    foreach ($imageFile in $ImageFiles ) {
        # 1a. RETRIEVE THE PRESIGNED URL TO UPLOAD THE FILE.
        
        # Prepare URL for `Get Presigned URL` API call
        $query = "https://api.pdf.co/v1/file/upload/get-presigned-url?contenttype=application/octet-stream&name=" + `
            [IO.Path]::GetFileName($imageFile)
        $query = [System.Uri]::EscapeUriString($query)

        # Execute request
        $jsonResponse = Invoke-RestMethod -Method Get -Headers @{ "x-api-key" = $API_KEY } -Uri $query
    
        if ($jsonResponse.error -eq $false) {
            # Get URL to use for the file upload 
            $uploadUrl = $jsonResponse.presignedUrl
            # Get URL of uploaded file to use with later API calls
            $uploadedFileUrl = $jsonResponse.url
    
            # 1b. UPLOAD THE FILE TO CLOUD.
    
            $r = Invoke-WebRequest -Method Put -Headers @{ "x-api-key" = $API_KEY; "content-type" = "application/octet-stream" } -InFile $imageFile -Uri $uploadUrl
            
            if ($r.StatusCode -eq 200) {
                # Keep uploaded file URL
                $uploadedFiles += $uploadedFileUrl
            }
            else {
                # Display request error status
                Write-Host $r.StatusCode + " " + $r.StatusDescription
            }
        }
        else {
            # Display service reported error
            Write-Host $jsonResponse.message
        }
    }

    if ($uploadedFiles.length -gt 0) {
        # 2. CREATE PDF DOCUMENT FROM UPLOADED IMAGE FILES
    
        # Prepare URL for `DOC To PDF` API call
        $query = "https://api.pdf.co/v1/pdf/convert/from/image"

        # Prepare request body (will be auto-converted to JSON by Invoke-RestMethod)
        # See documentation: https://apidocs.pdf.co
        $body = @{
            "name" = $(Split-Path $DestinationFile -Leaf)
            "url" = $uploadedFiles -join ","
        } | ConvertTo-Json
        
        # Execute request
        $response = Invoke-WebRequest -Method Post -Headers @{ "x-api-key" = $API_KEY; "Content-Type" = "application/json" } -Body $body -Uri $query
        
        $jsonResponse = $response.Content | ConvertFrom-Json
        
        if ($jsonResponse.error -eq $false) {
            # Get URL of generated PDF file
            $resultFileUrl = $jsonResponse.url;
            
            # Download PDF file
            Invoke-WebRequest -Headers @{ "x-api-key" = $API_KEY } -OutFile $DestinationFile -Uri $resultFileUrl

            Write-Host "Generated PDF file saved as `"$($DestinationFile)`" file."
        }
        else {
            # Display service reported error
            Write-Host $jsonResponse.message
        }   
    }
}
catch {
    # Display request error
    Write-Host $_.Exception
}

run.bat

      
@echo off

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

pause

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