How to read barcode from uploaded file for barcode reader API in PowerShell using PDF.co Web API

How to read barcode from uploaded file for barcode reader API in PowerShell: How To Tutorial

The sample source codes on this page will demonstrate you how to make barcode reader API in PowerShell. PDF.co Web API helps with barcode reader 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.

The SDK samples like this one below explain how to quickly make your application do barcode reader API in PowerShell with the help of PDF.co Web API. Open your PowerShell project and simply copy & paste the code and then run your app! Test PowerShell sample code examples whether they respond your needs and requirements for the project.

Trial version of ByteScout is available for free download from our website. This and other source code samples for PowerShell and other programming languages are available.

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ReadBarcodeFromUploadedFile.ps1

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

# Source file name
$SourceFile = ".\sample.pdf"
# Comma-separated list of barcode types to search. 
# See valid barcode types in the documentation https://app.pdf.co/documentation/api/1.0/barcode/read_from_url.html
$BarcodeTypes = "Code128,Code39,Interleaved2of5,EAN13"
# Comma-separated list of page indices (or ranges) to process. Leave empty for all pages. Example: '0,2-5,7-'.
$Pages = ""


# 1. RETRIEVE THE PRESIGNED URL TO UPLOAD THE FILE.
# * If you already have a direct file URL, skip to the step 3.

# Prepare URL for `Get Presigned URL` API call
$query = "https://api.pdf.co/v1/file/upload/get-presigned-url?contenttype=application/octet-stream&name=" + `
    [System.IO.Path]::GetFileName($SourceFile)
$query = [System.Uri]::EscapeUriString($query)

try {
    # 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

        # 2. UPLOAD THE FILE TO CLOUD.

        $r = Invoke-WebRequest -Method Put -Headers @{ "x-api-key" = $API_KEY; "content-type" = "application/octet-stream" } -InFile $SourceFile -Uri $uploadUrl
        
        if ($r.StatusCode -eq 200) {
            
            # 3. READ BARCODES FROM UPLOADED FILE

            # Prepare URL for `Barcode Reader` API call
            $query = "https://api.pdf.co/v1/barcode/read/from/url"

            # Prepare request body (will be auto-converted to JSON by Invoke-RestMethod)
            # See documentation: https://apidocs.pdf.co
            $body = @{
                "types" = $BarcodeTypes
                "pages" = $Pages
                "url" = $uploadedFileUrl
            } | 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 $false) {
                # Display found barcodes in console
                foreach ($barcode in $jsonResponse.barcodes)
                {
                    Write-Host "Found barcode:"
                    Write-Host "  Type: $($barcode.TypeName)"
                    Write-Host "  Value: $($barcode.Value)"
                    Write-Host "  Document Page Index: $($barcode.Page)"
                    Write-Host "  Rectangle: $($barcode.Rect)"
                    Write-Host "  Confidence: $($barcode.Confidence)"
                    Write-Host ""
                }
            }
            else {
                # Display service reported error
                Write-Host $jsonResponse.message
            }
        }
        else {
            # Display request error status
            Write-Host $r.StatusCode + " " + $r.StatusDescription
        }
    }
    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 "& .\ReadBarcodeFromUploadedFile.ps1"
echo Script finished with errorlevel=%errorlevel%

pause

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