PDF to image API in PowerShell using PDF.co Web API

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.

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ConvertPdfToPngFromUrl.ps1

      
# The following options are available through profiles:
# (JSON can be single/double-quoted and contain comments.)
# {
#     "profiles": [
#         {
#             "profile1": {
#                 "TextSmoothingMode": "HighQuality", // Valid values: "HighSpeed", "HighQuality"
#                 "VectorSmoothingMode": "HighQuality", // Valid values: "HighSpeed", "HighQuality"
#                 "ImageInterpolationMode": "HighQuality", // Valid values: "HighSpeed", "HighQuality"
#                 "RenderTextObjects": true, // Valid values: true, false
#                 "RenderVectorObjects": true, // Valid values: true, false
#                 "RenderImageObjects": true, // Valid values: true, false
#                 "RenderCurveVectorObjects": true, // Valid values: true, false
#                 "JPEGQuality": 85, // from 0 (lowest) to 100 (highest)
#                 "TIFFCompression": "LZW", // Valid values: "None", "LZW", "CCITT3", "CCITT4", "RLE"
#                 "RotateFlipType": "RotateNoneFlipNone", // RotateFlipType enum values from here: https://docs.microsoft.com/en-us/dotnet/api/system.drawing.rotatefliptype?view=netframework-2.0
#                 "ImageBitsPerPixel": "BPP24", // Valid values: "BPP1", "BPP8", "BPP24", "BPP32"
#                 "OneBitConversionAlgorithm": "OtsuThreshold", // Valid values: "OtsuThreshold", "BayerOrderedDithering"
#                 "FontHintingMode": "Default", // Valid values: "Default", "Stronger"
#                 "NightMode": false // Valid values: true, false
#             }
#         }
#     ]
# }

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

# 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 = ""
# Advanced Optoins
$Profiles = "{ 'profiles': [ { 'profile1': { 'ImageBitsPerPixel': 'BPP1' } } ] }"


# Prepare URL for `PDF To PNG` API call
$query = "https://api.pdf.co/v1/pdf/convert/to/png"

# Prepare request body (will be auto-converted to JSON by Invoke-RestMethod)
# See documentation: https://apidocs.pdf.co
$body = @{
    "password" = $Password
    "pages" = $Pages
    "url" = $SourceFileUrl
    "profiles" = $Profiles
} | ConvertTo-Json

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

            Invoke-WebRequest -Headers @{ "x-api-key" = $API_KEY } -OutFile $localFileName -Uri $url

            Write-Host "Downloaded `"$($localFileName)`""
            $part++
        }
    }
    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 "& .\ConvertPdfToPngFromUrl.ps1"
echo Script finished with errorlevel=%errorlevel%

pause

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